Road Trip! Garden Organic and the Heritage Seed Library

New in from the Heritage Seed Library

Last week, my colleagues on the gardening team at Ordsall Hall and Gardens and I hopped on trams and trains down to Ryton, on the outskirts of Coventry, to visit the headquarters of the UK’s organic gardening movement, Garden Organic.

We were there to meet the team who do the incredibly important work of managing and running the Heritage Seed Library; a repository of heritage, heirloom and orphaned seed varieties that are no longer grown commercially and therefore at risk of disappearing from circulation.

The HSL’s manager, Katrina, very kindly spent a couple of hours showing us around their seed collection and processing facilities, storage areas and growing spaces and it was all rather fascinating. I’ve been an HSL member for a couple of years, including a stint this year as a Variety Champion for French Bean ‘Black Valentine’, and we grow and save seed on the HSL’s behalf at Ordsall Hall and Gardens. So it was a real treat to see how the operation is run, and get a taste of the hard work that goes on behind the scenes. Huge thanks to Katrina for taking the time out of her busy day to show us around.

Here are a couple of shots of some of the HSL’s seed-winnowing gear. I seem to remember that this vicious-looking contraption, with a sliding panel on top to move those spikes back and forth, is for threshing and breaking open tough seed pods:

November 2017 HSL seed thresher
You do not want to get your hands trapped in here…

A little more towards the technical end of the scale, here’s an auto-winnower, which works by dropping seed into one chamber, and blowing the separated chaff into another:

November 2017 Garden Organic auto-winnower
A serious bit of kit for the serious job of separating the seed from the chaff.

But most of the HSL’s work is done by hand – either by the staff or their legion of loyal volunteers – such as the measuring of finer seed into packets for distribution to members, using this rack of short lengths of pipe of assorted guages:

November 2017 Garden Organic seed measures
A clever and cost-effective way of kitting yourself out with a seed measure for every occasion.

And here’s what it’s all about: packets of seeds ready to distribute to the Heritage Seed Library members, for growing, saving and of course, eating the resulting crops:

November 2017 Garden Organic HSL seed stocks
Seeds! So many lovely seeds ready to go out to the membership. (Need, got, got, need, need, need…)

We also enjoyed a leisurely stroll around the organic show gardens. Perhaps a chilly November day, with the sun dipping rapidly towards the horizon, wasn’t the best time to see the gardens at their glorious best, but there was still plenty of interest in the low-maintenance and therapeutic gardens, the veg growing area, and my favourite area, the heritage orchard:

November 2017 Garden Organic low maintenance border
Various ornamental grasses add height and structure to the low-maintenance border and look great at this time of year.
November 2017 Garden Organic therapy garden
GO’s accessible and peaceful space for therapeutic gardening.
November 2017 Garden Organic fruit tree walk
I snapped this shot on the way back to the office, so I’m not sure if they’re crab apples or Cornus mas, but it’s a lovely splash of colour either way.
November 2017 Garden Organic brassicas
This kale (‘Sutherland’?) is doing wonderfully well inside its bubble-wrap greenhouse.
November 2017 Garden Organic pear tree
I forgot to check, but I think this gnarly old specimen is a heritage pear variety.
November 2017 Garden Organic cordon orchard
These lovely old apple trees look superb, even without their leaves or fruit.
November 2017 Garden Organic apple mulching
This younger apple tree has been well-mulched with grass-cuttings.

All in all, it was a fascinating visit to an incredibly important project. Without the work of the Heritage Seed Library, a great many varieties of seed would have been permanently lost. True, not every heritage seed variety automatically deserves to be grown. Some varieties have fallen out of favour because they’ve gradually lost vigour, or have just been superseded or supplanted by better, stronger cultivars – often off-shoots of the originals – which seed companies will naturally prefer.

But in an age of increasing agricultural monoculture, vanishing wildlife and dwindling variety in the shops, it’s supremely important to keep our options open, and our genetic seed stocks as diverse as possible. Katrina told us of a couple of cultivars that the HSL no longer makes available because they became so popular they were re-stocked by commercial seed breeders and are now available in all the major seed catalogues. That, of course, is a major win for the HSL, although they’ll always keep a small batch of seed in reserve – frozen, if necessary – just in case the situation changes back again.

How to Join Garden Organic and the Heritage Seed Library

Now is the perfect time of year to join Garden Organic and take part in the Heritage Seed Library project as a grower, or even a Variety Champion. The new seed catalogue has just been sent out to members (I put my 2018 order in this morning) and it contains a gloriously wide range of heritage and heirloom veggies to choose from. The price of HSL membership is £51 per year, for which you get a full membership of Garden Organic – including their bi-annual newsletter and discounts at their online shop – and a chance to request up to six varieties of seed from the HSL list, plus a lucky dip variety (which has a quite high chance of being Calalloo…) if you’re so inclined.

I’ve been a member for two years now and am looking forward to my third; I’ve grown some fascinating cultivars – runner bean ‘Blackpod’ and pea ‘Kent Blue’ being particular favourites so far – and have enjoyed adding a wider range of vegetables to the harvests from Plot #59. I highly recommend taking out a membership, or buying one for a friend or family member, and doing your bit to help preserve vital heritage seed stocks for future generations.

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Yacón Harvest, Part One

Last week we had a couple of frosty nights and down on Plot #59 I spotted that our Yacón plants were feeling the effects:

November 2017 frosted Yacon plants
When the temperature drops and the foliage dies, it’s time to check for Yacón tubers.

With the frost starting to kill off the leaves and stems, and not much more photosynthesis in prospect, that meant the tubers would probably be as large as they were likely to grow. So I trimmed back the top growth and carefully up-ended the first of three pots to see what, if anything, the plant had produced. I was very happy indeed to find the following:

November 2017 - harvested Yacon
That’s not a bad yield at all for a single plant and a first attempt.

A few years ago, veg pioneer Mark Diacono wrote a piece on growing, harvesting and cooking Yacón for The Guardian, which explains what happens next. The larger, ‘storage’ tubers are detached from the plant and left for a couple of weeks to sweeten. The smaller, Jerusalem artichoke-like ‘growth’ tubers are the essential part of the crown that needs to be packed in moist, spent compost and stored in a cool, dark place over the winter. It’s the same sort of procedure as you might use to store a Dahlia crown.

They’re very easy to tell apart, as you can see:

November 2017 Yacon tubers
The Yacon develops two kinds of tubers; edible ‘storage’ and next year’s ‘growth’ tubers.

With the large tubers detached and sweetening, and the crown carefully packed away for winter, the next stage will be to cook ’em, eat ’em and see if Jo and I actually like ’em or not. (I did try a small piece raw on the spot and it was rather like a juicy radish / sweet chestnut, so I’m probably a fan already). Then then there are two more tubs to come. Apparently the large tubers store really well, so either we’ll be eating them for weeks and months to come, or my colleagues on the Ordsall Hall gardening team will be getting a few more Yacón tubers to try than they’ve been led to expect.

How about you? Have you grown Yacón before? Do you have any top tips for storing crowns or cooking the tubers? Please do let me know, via the comments.

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Ulluco Woes: DEFRA Biosecurity Alert Issued

June 2017 Ulloco pots
Our first and probably last ever batch of Ulluco plants, in happier times.

This year we’re growing three Andean tuber crops down on Plot #59: Oca, Yacon and Ulluco. It could also be the last year that we grow the third of that trio. DEFRA – the government’s Department for Environment Food & Rural Affairs – have issued a biosecurity warning, because some Ulluco tubers imported into the UK may be infected with several non-native viruses.

The situation is a serious one: the viruses could potentially infect plants of three major families: Amaranthaceae (spinach, beets, chard etc.) Cucurbitaceae (squash, pumpkin, courgette, etc.) and Solanaceae (potatoes, tomatoes, etc.) so that’s a number of our major food crops. I double-check with the head gardener where I work – Lindsay Berry, M.Hort – and she confirmed that yes, this sort of warning should be taken very seriously indeed.

Frustratingly, DEFRA haven’t updated their website with their own biosecurity alert, so I can’t point you straight to the source, but Emma at the Unconventional Gardener blog has posted details of the warning, along with a copy of the DEFRA document that was issued to tuber suppliers and sent on to me by the folks at Incredible Vegetables, from whom we bought our tubers this year.

This is the relevant section of the DEFRA document, with instructions to Ulluco growers:

  1. Ulluco should only be harvested for personal consumption and should not be sold or transferred to other sites (and all tubers should be removed from the soil).
  2. Tubers of ulluco should not be saved for planting in the following year.
  3. If potatoes and species of Amaranthaceae, Cucurbitaceae and Solanaceae are also grown nearby to ulluco, these should only be harvested for personal consumption and any seed/tubers should not be saved for planting in the following year.
  4. Any remaining waste from the vegetables, including peelings, can be disposed of in general waste bins to go to landfill and should not be composted.
  5. Remaining plant material (leaves and stems) of ulluco, should be destroyed following harvest, either by incineration (burning on site), via deep burial (to a minimum of 2 m) or bagged and disposed of with waste for land fill.
  6. Remaining plant material or potato and species of Amaranthaceae, Cucurbitaceae and Solanaceae, which you have grown, should be destroyed following harvest, either by incineration (burning on site), via deep burial (to a minimum of 2 m) or bagged and disposed of with waste for land fill.
  7. The planting area should be cleared of all plant material, including weeds.
  8. If any ulluco and potato plants regrow in the following year, they should be destroyed as for the plant material above.
  9. The viruses are potentially transmitted mechanically (on people, clothes, equipment etc.), so hygiene best practice should be followed:
    • Wash hands with soap before and after working on a crop.
    • Clean any tools and equipment which have been in contact with ulluco thoroughly to remove all plant material and soil.

Once again, rather frustratingly, there’s no information on how to spot signs of a definite viral infection, or whether the viruses are likely to persist in the soil next season, which of course would prevent growing any crops from potentially infected species. Although, as DEFRA hasn’t told us to immediately destroy all Ulluco crops and remove the soil, it would seem that the viruses in question might need a living host to persist?

In any case, because of the potential risk for mechanical transmission, I spent an unpleasant couple of hours on Sunday dragging half-decomposed vegetable matter out of our large compost bay – to which for the past few weeks I’d been adding the foliage from this year’s squash plants, which had been growing right next to the Ulluco – then bagging it up and taking it to the municipal tip.

So that’s an entire year’s worth of compostable material destroyed, because DEFRA haven’t specified the precise conditions under which the viruses can persist. Still, better safe than sorry, eh? I’d rather loose a year’s compost than risk a future year or more’s potato, tomato, squash and beet harvest.

I just hope we have a decent Ulluco crop this year, to make up for all the hassle.

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2017 Winter Squash Report

I’m a huge fan of the whole Cucurbitae family, but particularly squash. I love their savoury-sweet flavour – especially chopped into chunks, oiled, seasoned and baked in the oven until the edges start to caramelise nicely – but also the longevity of the fruits; picked at the right time, well-cured and properly stored they can last right through the coldest months of winter and into early spring.

But I have confession to make: this year I took my eye off the ball at the crucial time (July into August) and let the plants grow and ramble far more than I intended. The result was – rather predictably – far too much foliage and far fewer fruits than I was hoping for. As a result, we’ll be lucky if we get half a dozen good squashes this year, and at least three of those are overgrown courgettes.

But hey, next year will be better – I’ll have more time to keep on top of the plot, seeing as I’ll have finished the hard landscaping in our back garden that’s kept me so busy through the summer – and the harvest will be mighty.

In the meantime, here are a few pics of the squash / pumpkin / overgrown courgette fruits that we’ll hopefully to be able to enjoy eating later in the year.

Squash / Pumpkin

One of the new varieties I tried to grow this year is ‘Ukichi Kuri’, a compact Japanese squash. We have one decent fruit developing at the moment:

September 2017 squash 'Uchiki Kuri'
This compact, bijou Japanese squash has a little more ripening to do yet.

Another new-to-me variety this year is the old French heirloom ‘Rouge Vif D’Etampes’, which means ‘bright red, of Etampes’, a town to the south-west of Paris. It still has some reddening to do, but is coming along nicely:

September 2017 squash 'Rouge Vif D'Etampes'
Another squash / pumpkin that will hopefully develop its full colour on ripening.

Last year one of our allotment friends gave us a ‘Crown Prince’ squash in exchange for one of our ‘Turk’s Turban’. It was delicious, and even though it’s an F1 variety – which never come true to type if you grow from their seed – I thought I’d give a second generation a go. This is the most promising of the two fruits that have come from the saved seed:

September 2017 squash 'Crown Prince X no.1'
It will be interesting to see how this hybrid develops as it ripens – and how tasty it is when cooked.

And this is the other, not quite so promising-looking specimen:

September 2017 squash Crown Prince X no.2
Not quite so attractive, but you never know, the flavour might be fantastic..?

We’ll see how they turn out. You never know, they might be absolutely delicious.

Finally, this variety of squash is called ‘blue banana’:

September 2017 squash 'blue banana''
Who could resist growing this one, with a name like ‘blue banana’?

So far, not very blue – more of a mucky dark green – and not very banana-like. But again, the proof is in the eating, so we’ll see how that one turns out.

Overgrown Courgettes

The ‘Zephyr’ courgettes that we tried earlier in the season were very tasty, and quite unusual with their two-town green and yellow bisected colouring. It looks like they develop into some sort of crookneck squash if left on the plant long enough to mature:

September 2017 - Courgette 'Zephyr' / Crookneck Squash
Leave a courgette long enough and it will most likely turn into some sort of squash.

We’ve also got a smallish marrow that we’ve grown from courgette ‘Midnight F1’ and a gem squash from a courgette ‘Tondo di Piacenza’, already curing in the greenhouse.

That’s it for this year. Not quite the haul we were hoping for. But as I said, next year will be much, much better. I plan to nick Monty’s idea for growing smaller squash up stout poles (in our case, Jo suggested using three bamboo canes lashed together for each ‘pole’, which I reckon is a good idea) and also set up a couple of larger manure mounds for the more rambly, ground-hogging varieties.

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Modified Lorette System Pruning, Summer 2017

Earlier this year I talked about establishing our air-pot mini-orchard; three apples and a morello cherry that we’re growing in Air-Pot containers. At the time I mentioned that I was planning to use a Modified Lorette system of pruning in an effort to develop the best possible network of fruiting spurs without over-taxing the trees. This is a pruning method that seeks to establish a network of short, fruiting spurs along the length of a tree’s main branches, which makes it suitable for trained forms such as cordons, espaliers or step-overs (a.k.a. horizontal cordons).

To be honest, he trees we were supplied with are probably better suited to growing in the ground as small standards than as pot cordons. When they arrived they already had quite well-developed branch systems and a couple of their trunks aren’t particularly straight, either. But that’s the risk you take when you mail order, without picking out the specimens yourself. Caveat emptor and all that. If the worst comes to the worst, we’ll transplant these trees to the allotment and start again with more suitable cordon stock.

Persevering for now, the plan for the next few years at least is to restrict the trees’ top growth and keep them at around 5′ to 6′ (1.5m – 1.8m) or thereabouts in height, hopefully allowing their root systems to develop nicely within the Air-Pot planters, and their trunks to thicken enough to take the weight of additional branches.

I’ve unearthed a few more sources of information on the Modified Lorette system recently. The most useful is a detailed explanation in a Natural England Technical Information Note (that link should open / download a pdf document). There’s also this 2009 blog post from one of the gardeners at RHS Rosemoor, and a blog post by a chap called Mark Lee. (See below for the relevant sections.)

So, armed with my summary notes gathered from those articles, I set out last Thursday – a little late in the season perhaps, but hopefully not too late – to assess the state of our own trees and decide what sort of pruning cuts I needed to make this season. Admittedly, I’d already made a few snips earlier in the summer, mainly to control and cut back a few aphid-infested sections, so there wasn’t going to be a lot of new pruning to do.

Cornish Aromatic

September 2017 - apple 'Cornish Aromatic'
Strong growth and a few good apples, for a decent first year’s performance.

This tree was probably the best-balanced of the three in terms of its first year growth versus fruit production. It leafed up well, produced plenty of blossom and we had four good-sized and very tasty (if not particularly aromatic) apples from it.

One thing we weren’t made aware of when we bought our trees is that the Cornish Aromatic seems to be a partial (at least) tip-bearer, meaning the fruits form at the end of side-stems, rather than along their length.

July 2017 Cornish Aromatic fruitlets
Cornish Aromatic earlier in the season, pre-thinning, with a cluster of tip-borne apples.

This obviously has implications for pruning under a Modified Lorette; I’d have to assume there’s a risk involved in shortening branches to form fruiting spurs if the tree isn’t a spur-bearing fruiter. Looking at our tree, I spotted a number of shorter side stems with a large bud at the tip:

September 2017 - apple 'Cornish Aromatic' fruit bud?
One of next year’s apples, waiting in the bud? Here’s hoping it forms fruit.

With any luck those will form fruit clusters next year, rather than just growing out and extending the length of the stems. All of which left just one 20cm+ leader to be pruned back to the recommended three leaves:

September 2017 - apple 'Cornish Aromatic' leader
A candidate for pruning, if only to stop the height of the tree getting out of hand.

A quick snip to the top-right and that’s one tree done.

Herefordshire Russet

September 2017 apple 'Herefordshire Russet'
Still a half dozen apples ripening on this tree, hopefully ripening nicely.

Our second tree has been slower to put on new growth this year, but did produce a fairly prolific crop of apples, which were thinned down to a half-dozen over the course of the spring and summer. Definitely a spur-bearer this time, so an ideal candidate for Modified Lorette shaping in years to come, but not much to prune this time around.

September 2017 - apple 'Herefordshire Russet' new growth
There’s really not much here that can be pruned under the Modified Lorette system.

Blenheim Orange

September 2017 - apple 'Blenheim Orange'
Lots of new growth but no usable fruit this season. Better luck next year, hopefully.

Our third tree produced one lonely little apple which dropped from the tree in July, so no harvest at all this year. Lots of fairly vigorous growth instead, so a bit more pruning to be done here.

September 2017 - apple 'Blenheim Orange' leader
This leading stem was given a trim to bring it back under control.

Bringing a leader or two back under control should help shape the tree and hopefully prevent it becoming too leggy and thin. And hopefully some of the spurs that are developing will be more fruitful next year.

Morello Cherry

September 2017 - cherry 'Morello' canopy
Plenty of strong growth in its first season from our new cherry tree.

Although we had a fair bit of blossom earlier in the year, and I took steps to cover the tree with a Cherryaid mesh sleeve once it looked as though the blossom had set, we didn’t have any fruit this year. The tree seems healthy enough otherwise, with good new growth.

Reading the Natural England Technical Information Note though, it doesn’t sound like it’s a good idea to try to cordon-prune a cherry, because they “produce fruits at the base of maiden laterals and along the length of older stems so spur pruning is not suitable, as this would remove the most vigorous fruiting wood.”

I’m going to aim for a fairly compact standard instead, maybe some sort of weeping form. To that end, I’ve trimmed or rubbed off the buds to about half-way up the stem, and we’ll see how things develop next year.

September 2017 - cherry 'Morello' stem
A few side-shoots to trim and buds to rub off further down.

Conclusions and Observations

September 2017 pruning cuttings
Not a lot to remove this time around.

As you can see, I really didn’t end up pruning too much from the apple trees this time around, although I did make a few more cuts earlier in the year as I mentioned.

I need to re-visit my research on feeding regimes to make sure the trees are getting the nutrients they need at the time of year they need them. Calcified seaweed feed will be on the shopping list to make sure the slight bitter pit that we had on the Cornish Aromatic doesn’t become a regular feature. I’ve already bought a soaker hose, which might help provide steady irrigation when the weather is drier, rather than drenching them every couple of days. And some sort of organic aphid control is a must, as we had a few cases of woolly aphid to contend with this year.

On the whole though, I’m happy that the trees have grown well in their first year and are starting to strengthen. I’ll continue to carefully prune them according to the modified lorette (or not, for the Morello) and see how they go in years to come.

Source Material

I’m going to replicate the key information from all three above-mentioned source articles here, mainly for my own reference but also in case the original pages are taken down for any reason.

From the Natural England TIN:

Pruning should be delayed until the basal third of new shoots has turned woody and growth is slowing down (to reduce the amount of frost-vulnerable secondary growth). This is usually from around mid-July (pears are normally ready for pruning a couple of weeks earlier than apples).

With the modified Lorette system only maiden laterals and sub-laterals (ie the current year’s growth) that are longer than 20cm are pruned. They are cut back to the third leaf from the base
(not counting the leaf clusters at the base). These short stems will then become the spurs where the fruit is produced.

Weaker laterals are left as they may have fruit buds at their tips. Over-vigorous, upright laterals may be removed completely, or left to draw up vigour and help reduce the amount of
secondary growth formed and then removed in the winter.

Side shoots on more mature laterals should be cut back to one leaf above the basal cluster. Any secondary growth produced should be cut back to one or two buds in September, or over the winter.

From the RHS Rosemoor post:

[Modified Lorette] Pruning does not start until the basal third of a new shoot has turned woody, and growth is slowing down. Timing will depend largely on the weather and which part of the country you are in. Prune too early and the basal buds will break and produce soft growth for the winter. Prune too late and the basal bud will not turn into a fruit bud before the winter sets in.

Once the permanent framework is established pruning cuts are made to one bud from the main stem, if it is the first time the shoot is pruned then cut to 3 buds to help form the spur system.

Pruning is best spread over a 2-3 week period and to further discourage secondary growth, a few vigorous shoots may be left unpruned to act as ‘sap drawers’. Shorten sap-drawers in the spring.

It is recommended that shoots shorter than 9 in should be left unpruned as these often have a flower bud at the top. I find over time that these short shoots tend to produce vegetative side shoots that gradually force the tree further away from their supports, so I prune some of these out.

From Mark Lee’s post:

—Summary of the Lorette System

1. Don’t prune in the winter, except for removing main branches from the framework of the tree.
2. Don’t prune until around the middle of June. At this point in the season, leaves and new shoots are almost fully mature.
3. Only remove branches when they are pencil thickness. Make cuts almost to the base of the branch. Fruit spurs will form as a result where each year fruit will form.
4. Every 30 days of the growing season after the first pruning, remove any branches that are now large enough.

In cool climates, a Modified Lorette System is practiced: one pruning in mid-August to the third leaf of all pencil diameter branches, followed in winter by removal of those same branches down to almost the base where fruit spurs are forming.

Mark Lee’s post also includes some useful commentary on the originator of the system – Monsieur Louis Lorette – and his reasons for establishing his new system, namely:

“Lorette noticed as a young man that well trained trees, pruned carefully each winter, produced much less fruit than standard trees that were left unpruned. Around 1898, Lorette began a series of experiments that showed that apple and pear tree buds formed at the base of a branch are more productive than those formed farther up the branch.”

All of which I find rather fascinating.

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Soilfixer Trial Part V: First Results

I’ve harvested the first batch of produce from the SoilFixer trial beds down on Plot #59.

Quick Recap

I’ve been carrying out a soil improvement product trial this year at the invitation of the folks at SoilFixer.co.uk, testing two of their compost and/or soil enhancement products, versus ordinary compost and untreated soil.

It’s a very rough, ready and rather unscientific method that I’m following: I set up four small raised beds, planted broad beans and sowed two varieties each of turnip and beetroot. In mid-June I reported on the good growth so far.

Harvesting

I took a look at the beds last weekend and realised that it was past time to pick some crops. I freely admit, I’ve left the harvesting a bit too late, and should probably have done so sooner, but Jo and I were on holiday in mid-July and things have been hectic before and since.

There was really no point in picking the broad beans; the blackfly had all-but wiped them out and the few pods left on the plants had all gone over anyhow. So, I decided that for comparison purposes I’d lift the four largest ‘Boldor F1’ golden beetroot (the ‘Detroit 2’ don’t look like they’re worth harvesting yet) and the largest ‘Purple Top Milan’ turnip. Just the one? Well, yes, because frankly I’d let them get a bit out of hand:

July 2017 SoilFixer Harvest
Nice-looking golden beetroot and… turnip, or deadly weapon? You decide.

Here are the results, table-wise:

Bed Crop Weight
One (C.H.A. Compost) Boldor F1 Beetroot 290g
  Purple Top Milan Turnip 935g
Two (Compost) Boldor F1 Beetroot 305g
  Purple Top Milan Turnip 1147g
Three (Soil & SF60) Boldor F1 Beetroot 414g
  Purple Top Milan Turnip 1678g
Four (Plain Soil) Boldor F1 Beetroot 371g
  Purple Top Milan Turnip 1141g

And here’s a quick graph I threw together:

That’s right folks, I’ve picked almost 5kg of turnips so far, and there are plenty more to come. If anyone knows any good turnip recipes, please do post links or details in the comments (I’m begging you…)

Conclusions?

Well, what can I say? Based on this very small and not-at-all statistically significant sample there’s a clear winner in terms of yield – the soil that had been enhanced with SoilFixer’s SF60 product – as long as by ‘yield’ we mean sheer mass, rather than anything relating to how usable and tasty the veg might actually be. (I hasten to add that the beetroot were fine, it’s the massive turnips I’m worried about.)

Would I be happy to use SF60 again? Most certainly, and I plan to use up the rest of the tub I was sent in next year’s greenhouse containers. Likewise, I’ll be adding a good scoop or two of C.H.A. to my home compost bin when I put the lid on it at the end of the year.

But would I be happy to put my hand in my pocket and buy a supply of SF60 or C.H.A. for my personal use? Well, that will depend on my doing some further testing, and also reading the results of the other triallists’ efforts (which were hopefully a bit more usefully clear-cut than mine).

Hedging my bets, I’d say that if I was trying to grow a specimen crop – super-hot chillies, say, or something tropical in a greenhouse, or a heritage vegetable that I wanted to save seed from – and wanted to give my growing medium a boost, then I think SF60 would be a good product to use. Commercial growers might want to investigate further.

I’m not so sure about the C.H.A. for my own use. I don’t think my compost quality requirements are stringent enough to require much in the way of amendment. Again, if I was producing a lot of compost for a commercial or specimen growing project then it might be worth trying. But I’d need to see more evidence of a clear-cut and dramatic compost improvement before I’d be able to commit.

Room For Methodological Improvement

On reflection (hindsight being a wonderful thing) I could have designed and executed the trial much better; either by growing a smaller selection of crops, or even a single crop – ideally one that wasn’t quite as prone to pest-problems as broad beans (blackfly) or cabbages (slugs) – and assessing how many plants of usable size and quality had been grown by a particular date. Either that or growing something simple to assess, like potatoes (again though, potential pest and disease problems there) and simply harvesting them all at once and weighing the yield from each bed. Or I could have tried something like strawberries; grown the same variety, then assessed both yield and flavour with a blind taste test.

I could also have done better with the production of the compost used in the first two beds. Unfortunately I used too much touch grass in the original mix (the stems didn’t break down properly) and the bags I used didn’t drain as well as I’d hoped. Plus, I started the compost off late, or rather, early in the year, which didn’t give it enough time to break down fully into the humus-rich material that the C.H.A. product is designed to produce.

What I can (and will) do next is harvest the rest of the turnips and beetroot from the trial beds and weigh them, to add to the data-set, on the off-chance that clarifies anything. Although after eating a few meals’ worth of roasted beetroot, I reckon that’s going to leave me with around 25kg of turnip to dispose of. They’ll be destined for a return trip to the compost heap, unless I can think of something more intelligent to do with them. I know for a fact there not room in the freezer for that much turnip soup…

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Harvesting our Onion, Shallot and Garlic Crops

Jo and I have not long returned from an eight-day break down in beautiful Devon and Cornwall, touring gardens, sampling the regional cuisine (particularly the ice cream section of the menu) and quaffing a few of the local ales. I’ll be talking more about the rather wonderful gardens we visited – RHS Rosemoor, The Lost Gardens of Heligan, Hartland Abbey, Docton Mill, Baddesley Clinton, Barrington Court, Trelissick, Glendurgan and Cotehele – in later blog posts.

We got back to Plot #59 to find that weeds had sprung up everywhere (of course), Jo’s flowers were blooming (you should have seen the A-frame of sweet peas before we picked them…) and, most of our edible Allium crops were ready for harvesting.

June and July are the best months, depending on the weather, for lifting and drying the edible members of the Allium family – onions, garlic and shallots – before putting them into store for autumn and winter. This year we grew all three, and through a combination of plenty of sunshine, tempered with occasional bouts of rain, they’ve all done rather well.

Onions

This year we grew ‘Sturon’ from sets. I did sow some other varieties from seed back in January or February but they didn’t do too well, so I’ll have to try those again next year.

Unfortunately, our plot has a pretty endemic problem with onion white rot. The best advice is to not re-grow alliums anywhere that’s suffered white rot, but as that could be anywhere, for the past couple of years we’ve just planted anyhow and taken our chances.

Luckily around half of this year’s crop managed to escape infection. I laid them out for drying in old plastic bakers’ trays that I rescued from the skip earlier in the year:

July 2017 onion harvest
Four trays of pristine onions drying in the greenhouse.

The bulbs that have any sign of white rot have been temporarily quarantined out on the surface of the onion bed. When I have a bit more time at the weekend, I’ll clean each one up, removing any infected material, and then assess them for usefulness. If they’re edible then we’ll use them as soon as possible, otherwise they’ll go in the bin, rather than the compost heap.

July 2017 onions in quarantine
These bulbs are all showing some signs of white rot and will need careful cleaning.

Shallots

Last year, Dad-in-Law Guru Glyn gave us half a dozen seed sets of two varieties of shallots. Of course, I can’t remember which varieties they are (I’ve emailed him to check.) Anyway, they grew rather well and divided nicely:

July 2017 shallots ready for harvest
Plenty of shallots on this clump, they’ve divided and grown quite well.

Each set has split into between four and ten new bulbs – plenty enough for a fair few portions to eat, with seed stock left over for next year:

July 2017 shallot harvest
Two varieties of shallot laid out for drying.

Edit: Guru Glyn says: “On the left, ‘Hative de Niort’, on the right, ‘Jermor'”.

Garlic

We’ve always had mixed results with garlic and this year was no exception. Back in October we planted three cultivars: Extra Early Wight, Red Duke Wight and Elephant Garlic, with two rows of the latter, one of seed cloves from The Garlic Farm and one of our own, plot-grown cloves.

Both the Extra Early and the Red Duke started developing allium rust back in May and by the end of June it had completely covered the plants, killing off the outer foliage, preventing photosynthesis and effectively halting the growth of the plants.

Luckily, the Extra Early has already developed decent-sized bulbs:

July 2017 garlic harvest
VAriety: Extra Early Wight. Yield: good enough.

But the Red Duke was next-to-useless; small, barely-divided bulbs good enough only for chucking whole into winter stews, or saving to use in next year’s garlic spray.

The elephant garlic, interestingly enough, managed to avoid the rust problem completely. The outer foliage died back and dried up, as you’d expect, but there were no signs of the orange pustules that affected the other two, despite them being grown next door and so within easy infection distance.

The plants grown from the Garlic Farm seed stock germinated, grew, developed and went over much faster than those grown from our own cloves, even though those were originally grown from the previous year’s Garlic Farm seed stock. The environmental conditions are obviously very different in the Isle of Wight to North Manchester, which probably accounts for the disparity. So the Garlic Farm plants have been lifted and put to dry, whilst our own stock plants are still in the ground:

July 2017 elephant garlic harvest
Elephant garlic grown from the Garlic Farm stock bought last September.

I’ll wait to lift the second row before I make a firm decision, but I think this year I’ll just re-plant from our own stock, rather than spend extra money on bought-in cloves, which do tend to be rather pricey.

How have you done with your edible Alliums? Do let us know, via the comments below, or on Twitter.

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A Quick Mint-Cuttings Experiment – Conclusion

Back in April and May I posted about three different mint cuttings that I’d taken from an old ‘Eau de Cologne’ mint plant that I wanted to propagate.

Here are the original cuttings again, for reference:

April 2017 mint cuttings
Various amounts of stem, root and leaf left on the propagules, to see which, if any, perform better.

All three cuttings have grown strongly in the nearly three months since they were taken and potted.

July 2017 mint cutting

This cutting was taken mostly bare stem, with a small amount of leaf, seen at the bottom of the original pic. The main stem has developed really nicely, there are several leafy side-shoots developing, and runners have begun to colonise the edges of the pot as the plant seeks to expand its territory. All signs of a healthy mint plant.

July 2017 mint cutting

This cutting was originally taken as a length of bare stem only, seen top right in the original pic. Again, once main stem has grown well and started sending out both side shoots and runners to extend its reach around the pot. Growth hasn’t been quite as vigorous as it was for the plant that started off with a little extra leaf on it as well.

July 2017 mint cutting

Finally, this cutting was one that was taken with a couple of decent-sized leaf clusters attached and it seems to have performed the best of the three. Growth is strong on two main stems, and a strong runner has circled a third of the inside of the pot and sent up another vertical stem.

To conclude this brief and not-very-scientific-at-all observation: it seems as though the best way to take mint cuttings might be to trim a length of stem that has one or two leafy nodes already in growth, rather than just a bare length of stem, but the latter method clearly works just fine as well. This does make some sense: the leaves will provide energy through photosynthesis that the cutting can use to establish its new roots.

On the other hand, if the cuttings were taken at a different time of year, the rate of moisture loss from the leaves might have depleted the cutting’s stores before it could take, and killed it. And of course, this conclusion doesn’t take into account all the various and sundry factors that could have affected the relative growth of these three particular plants, such as the possibility that predation – they all look a little slug-bitten in places – could have held them back at times. But it was an interesting little test to run.

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Thank You to Basil Labels

Recently, I was contacted by Ashley Basil of www.basillabels.co.uk. Ashley asked if I’d be interested in helping promote a Twitter giveaway that he’s running this week, in return for a set of his laser-printed stainless steel plant labels. I said I’d be happy to, and asked for a cheeky favour in return: would Ashley mind doing a bespoke set of labels for the trees in our Air-Pot mini-orchard?

Here’s what arrived in the post not half an hour ago:

Ashley Basil stainless steel plant labels
Shiny! And hard-wearing, too.

Thank you Ashley, I love ’em! They’ll look great attached to the tree stakes that we’ll be using when the Air-Pot denizens are moved to their final positions later in the year.

If you fancy a chance to win a a set of plant labels, check out Ashley’s competition, which closes on Sunday 9th July:

Please note: you’ll need to re-tweet the original tweet and follow @Basil_Labels for a chance to win.

Or, if you’d just like to go ahead and place an order – standard price £10.00 for a standard set of 5, or for 3 custom labels – you can do so via www.basillabels.co.uk, or Ashley’s Etsy.com shop.

Full Disclosure: As I mentioned, Ashley asked me to help promote his Twitter competition in return for a set of labels. This ‘ere blog post is because I like the product and am happy to endorse it.

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Time To Thin Out The Apples

The three apple trees that we potted up into our Air-Pot mini-orchard are all doing very well so far. After blossoming profusely back in May they’ve all set fruit quite well; a couple of them maybe too well.

Here’s a cluster of developing fruitlets on our ‘Cornish Aromatic’:

July 2017 Cornish Aromatic fruitlets
Coming along nicely, but a bit too crowded for comfort – time to thin them out.

As you can see, there are four healthy fruitlets developing at the tip of one branch. This is lovely to see, but it poses several potential problems.

Firstly, too many fruit at one branch tip, getting heavier as they grow, will cause the branch to bend and possibly break off later in the season.

Secondly, if the tree puts out too much fruit in one season it may exhaust its energy reserves and that could prevent it developing fruit buds for next year.

And the main reason: we’re establishing these trees for long-term growth in their Air-Pots and so we’d really like them to focus on developing their roots, rather than fruiting.

It’s all about establishing a healthy basis for longer-term harvests, and that’s why I’ll be out later on with my sharpest scissors to thin those clusters of fruitlets down to one or maybe two fruitlets in each, rather than the three or four that are there at the moment.

The same applies to our Herefordshire Russet:

July 2017 Herefordshire Russet fruitlets
Small but perfectly formed, these russet apples will be delicious when ripe.

This one is a spur-bearer and so the fruitlets are more widely spaced, which makes them easier to assess for thinning. Again though, I won’t be leaving more than maybe five or six fruitlets on the tree this year. It’s best not to be greedy now at the expense of future growth and harvest size.

Finally, our Belnheim Orange only has three fruitlets on it this year, so I’ll be leaving that along to do its thing.

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