Direct seed exchange among EU members 2024-2025

Hi, I can clarify my winter squash offer:

LONG STORAGE - reminder
Get in mind that all I offer is STORAGE SQUASHES!… meaning they will not be at their best at harvest, you’ll get the best as they rippen in storage.

More understandings on that: if you aim at long storing cucurbita landraces, mind that they have to be high dry matter, i.e. high in starch content, at harvest: this high starch content will get partially converted into sugars later in storage. That’s the rippening process. And when the starch amount get depleted, then the rottening process begins.

The other way round: a “good” squash at harvest will deplete its starch content rapidly and so will rot shortly.

Overall: what is consider a “good squash” at harvest, as far as taste is concerned, is high in sugars and sufficiently high in dry matter (i.e. starch) to have a good enough texture, but not high enough to handle storing. Starch - if I get Loy right - is created after the simple and easily breakable sugars are created in the fruit. It’s more complex substances, needing more photosynthetic energy.

And that is exactly what makes the “grower paradox”: many many lines over the past decades were bred for yield at harvest, and so to get high yield it was aimed at having fruits filled with simple sugars and water, i.e. low dry matter, low starch content, and so: no long storage ability. Which is a bit strange when that thing is called “winter squash”: consider that this winter ability as been bred out of squash to get… water instead! That’s a full inversion of traditional usages.
That made Brent Loy mostly work with small seed companies willing to get quality products (over yields) to their clients: typically seed companies working for market gardeners in direct relationship with their clients, willing to sell quality first thing, not the long supply chain specialists.
See:
Maximizing Yield and Eating Quality in Winter Squash 11 (1) (1).pdf (20.7 KB)
And in vid: https://youtu.be/AhJ_5VMdlak?t=2700&si=LuBtAm7qPLSIIHB-
(That’s a direct access to the related part in Loy’s conference)
And watch also the last video of this post which greatly summarized that particular problem: how “winter” was bred out of… winter squash!

Example of Tersukabuto with high dry matter at harvest, i.e. starch, 18%, which is partially converted to sugars over time but keeping enough starch to provide still a nice texture:

And please let me know there is any flaw in my above summary: all these things being new to me I may not get it perfectly

Then by long storage I mean: harvested between beginning of september and mid-october, and evaluated in mid-january. They had to be near to intact by then to be evaluated. One third was kept insise at around 17-18degC, 2 thirds were in a barn bay, above freezing temp. I may thrown out 5-10% of what was inside and 20% of what was outside. Overall it confirms that it’s much better storing at room temp, but also that this isn’t that bad outside.

I consider that at room temp about 50-70% of all could have gone into a +2month storage, i.e… 6 month.

VIGOR
Most went into a competition for early vigor as I sow 20 seeds per final plant, meaning thinning out 95% of the young plants: I only kept the most vigorous.

EARLINESS
I’ve made markings on squash at harvest:

  • Double cross for “super early” (harvested around the 7th of September, evaluation on peduncle dryness)
  • single cross for (relatively) “early” (harvested around the 20th of September, same evaluation)
    Those 2 categories were those I brought to Antibes
  • then the remaining, finally harvested around mid October, including most brown-green fleshed moschata types.

The super-early may interest the Scandinavians for example, or those in the mountains.
I will personnally go mostly with the early to super-early personnally as, even if I understand that in theory later types means higher yields, I want to sow my cover crops as soon as possible in September.
Mind those earliness markings, i.e. harvest dates, are relative to direct sowings the 6th and 7th of June in my place, meaning either by direct sowing earlier or doing transplants you would get even more precocity.

FLAVOR EVALUATION
All evaluations were made raw, which gives no infication of texture but quite a good indication of flavours. Of course it would have been better cooking them on top of that but that would have been too much work with about 400 fruits. Was already a marathon…
The evaluation was simple categories: Excellent, Very Good, Good, Mediocre.
Mediocre meaning blandness or so, edible but not that enjoyable. About 30%.
Good meaning you start enjoying the fruit, flavors. It’s already a decent squash I enjoyed. About 50%
Very good meaning in general that you feel directly more sugar + an additional savory after taste, aromas, which makes it a very very enjoyable squash. You automatically want retaste a bit. About 15%.
Excellent: overwhelming taste, aromas, flavors. About 5%. In that category I found only 1 Maxima and nearly 10 Moschatas out of the same figures.

Overall, and to my surprise, I found moschatas far superior to maximas.

WEIGHT
As I have a really low fertility soil and as intentionnally overdensified things to get more crosses (2 plants per square meter) fruits were relatively small, so these are just indications of relative calibers. So consider potentials being far superior to those weights, about x2 I would say.

Maximas: 2 categories:

  • 700grams to 1,5kgs
  • +1,5kgs.
    Under 700 grams were not evaluated. No seeds from them.

Moschatas: weight wasn’t a main matter as I favored classifying by shapes. Nevertheless :

  • +500grams: main wide category, up to 2,8kgs
  • -500grams were evaluated separately and in particular most green-brown fleshed types. If not dark fleshed they were not seed-saved.

So then the offer:

MAXIMAS


On this picture 50% were gone already: kept only those intact or so. I didn’t evaluate the others, even if I kept the seeds of the +1,5kgs category for a friend who has a specific project with pigs he feeds with squash all year long, so can give to them whenever they start rottening

Essentially you can compose your mix using 3 descriptors : Taste (Good ; Very Good) x Caliber (0,7 to 1,5kg ; +1,5kg) x Earliness (Super-Early ; Early ; Late)

For example I would personnally either keep one population or create 2:

one pop: all centered on taste x earliness, i.e. not minding the caliber: direct sow the very good in about 2 thirds of my patch and then the good only in the remaining third. All these out the Super-Early and Early.

two pops scenario:

  • Small ones x early to super early. Same sorting in the patch: Very good 2 thirds, goog one third.
  • Big ones x early to super early. Same sorting in the patch: Very good 2 thirds, goog one third.

Then, whatever the original scenario, in next years I would get rid of the “good” ones to go towards excellence fast, as shown in this graph :

Then it’s up to everybody to choose: for example if I was in Scandinavia and had only 10 square meter available I would choose to take seeds of the “very good” X big ones X super early category to get the most out of it.

MOSCHATAS

You got the same Mediocre / Good / Very Good / Excellent categories.

Then I sorted into shape/look category as I thought that one may want to create modern landraces around those sub-types, and namely the market gardeners who may struggle a lot selling super crazily diverse stuff on their markets, as it’s not usual right now.

So you can compose your mix using 3 descriptors : Taste, Shape/Look, Earliness.

These were the Shape/Look categories for all of more than 500grams:

So then, if I was to compose a mix for a short season gardener, high in the mountains, with only 10 square meter available, I would take the very good to excellent X the ultra-early category, and all shapes mixed in, as I feel like it’s super enjoyable discovering all kinds of types in a family garden, you don’t need to sell that diversity… You just can enjoy it!.. Of course as long as at the end of the day it doesn’t appear to be… Bland!!! :joy:

Then, for example - and to go in another direction- if I was to create sub-populations for market gardeners along each shape or look in my place, I would go mostly with the Early to Super-Early ones, and then sow the 2 thirds of each patch with the Very Good to Excellent ones and one third with the good, as a way to continue mixing genetics a bit.
For another project: if I wanted only dark-fleshed ones I would take seeds of each of those, no matter the earliness, size and shape… as I only had a few fruits (about 10), all very good to excellent tasting. And most under 500grams.

Another line of thought: if I didn’t mind the stripes and simply wanted something with some kind of neck - be it long or short - I would blend the “long-neck type”, “intermediary type” and “striped type” and then, depending on my cultivation surface would take some of those from the “very good” to “excellent” categories or from the “good” to “excellent” categories.

CAROTENOIDS TO ME… IN THIS YEAR’S EXPERIENCE!
Overall, even if I know that dark orange correlates with high carotenoid contents and that this signifies high nutritional value - or at least for this anti-oxydant -, as in my experience there was no correlation with high flavor quality, I decided to put aside that single criteria. Most pale fleshed squash I ate were not that great tasting, that I can say… but as some deep orange were also bland to me, I did not pay much attention to that criteria, to my surprise. The Yolk Colour Fan made nice pictures…


… But wasn’t of much use!

… And there you can imagine where most of this crazy 2024 squash year went into :grinning::


… In partneship with a friends’association.

And eventually… I still keep inside for further use:


Namely:

  • about 50kg of different “Tetsukabuto (moschXmax)” crosses, as they are all intact. Will taste them by the 1st of April. One share crossed with moschatas, one share crossed with maximas. Will have seeds to share too later in season. Super interesting for everyone willing to create a ultra-long storage squash modern landrace. Keep in mind that Tetsu not only being very long lasting but also really tasteful and eventually super high yielding, which makes it exceptionnal, and that seeming at least partially due its interspecific qualities: it’s male sterile and so not putting too much efforts (i.e. converted photosynthetic energy) into creating loads of viable seeds, that energy seeming to be going into flesh: high starch contrnt and high yield. Then it’s all to the breeder to get something stable out of that in a modern landracing style.
  • about 30kg of ficifolia of different strains. Same story: will share the seeds later in season. I will try to do some sauerkraut out of them if no other idea. Supposedly +1year in storage, but not that tasteful I must say. Appreciates cool temperatures, or shade, can be very very high yielding in such conditions. Otherwise it’s the first of all cucurbitas to get sun burnt, as in my place.

See the Tetsukabuto vid in Winter Squash Week for more on Tetsu (taste, yields, etc.)

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Super work ! You become the king of squash ! :+1:

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wow :heart_eyes: amazing job!!! you really have squash seeds for most of Europe :joy:

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That’s the idea :wink:

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(EDIT: this post is an abreviated version of this one, which has some pictures in it)

Hey European friends, let me know what would you like from my Maxima and Moschata grexes ? And also in my melons, watermelons, kiwanos grexes. I’ll be back to my place around the 10th of march so they will be shipped by then and I won’t send any seeds before next year after that.

As explained above, for Maximas I can sort using 3 sets of criteria:

  • size: “small” (about 1kg) and “big” (2kg and above)
  • taste: average / good / excellent
  • earliness: super early / early / late

All evaluated after a 4 month storage, i.e. long keepers, selected for that storage ability and winter use.

For Moschatas it’s the same winter use that is targetted. There is no real size criteria (but they were all bigger than 500grams) but there is;

  • shape criteria (long-necked / intermediary types (with a neck) / pumpkin type / striped / “super diverse miscellaneous type”)
  • taste evaluation (average / good / very good / excellent)
  • earliness evaluation (super early / early / late).

I imagine most GTS members will go for an all-shapes mix to favor diversity in the garden and then in that for the very good to excellent, including some of the “good” if your project requires many seeds… And then depending on your regions necessity: very early (scandinavians) to all kinds of precocity (southerners).

(See post above for a deeper dive into those criteria and also to see pics)

For melons and watermelons it’s about the same with only two types of precocity: “early” and “usual” :

  • in the early category (15% of the seed stock) : good / very good / excellent taste
  • in the more usual precocity (75% of the seed stock): good / very good / excellent taste

And then, both for melons and watermelons I have also a storage grex (10% of the seed stock) asembled from storage strains:

  • for storage watermelons overall taste isn’t that bad but these will never taste as the best summer watermelons!
  • for melons yes some were still very good post after weeks to 2 months storage.

Still storage melon and watermelon is not the first thing I would try of I had limited space. For those interested expect a +/- 2 month post-harvest storage.

Eventually Kiwanos are selected on shape diversity and sugar content.

Then the other cucurbits could be of less interest but ask if you want to give it a try: edible gourds (lagenaria siceraria), giant cyclanthera (cyclanthera pedata), cucumber (cucumis sativus) and cucumber melon (cuc.melo), snake gourd (tricosanthes cucumerina), zambian kiwano (cucumis zambianus), margose (momordica charantia), wax gourd (benincasa hispisa), cucumis anguria. Those haven’t been reselected yet. Many seeds in gourds, cyclantheras, cucumbers families, less in others.

Consider reply to me during February in PM as I won’t send anything before next year after the 15th of march. Some seeds lots, asembled on demand, will go in different market gardeners fields of France also, for seed increase, local adaptation and selection.
@Hugo @stephane_rave @Richard @marcela_v @Tanjaeskildsen @mare.silba @malterod @Hekseringen @polarca and others…

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Nice. I want to ask for some diverse grexes. I will send you a pm later.

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Took me a little while to start concidering this year. Just earlier this month I saved seeds from the last eggplants that I had harvested in september. Some had spoiled or started sprouting inside the fruit throughout autumn and winter, but mainly they were fine even after months of storage. Last year in general was kinda good in terms of seed harvest. Either I got excessive amounts and there is lot to share, or I had hard selection and hopefully better adapted seeds, but not as much or none to share.

What I have excessive amounts:

Peppers: Total about 5 litres of seeds.

Annuum F2/F3 mix hot/sweet peppers several litres of seeds.
Annuum wild dwarf chilitepin domestic cross F2s. Several dl of seeds.
Baccatum F2s with intensional random hand pollinating last year as well to increase diversity. Around litre of seeds.
C.praetermissum x c.baccatum F2s. At least some hundreds of seeds.

Tomatoes: Total a couple litres of seeds. Domestic includes also crosses with wilding panamarous.

Domestic F2s from new crosses, grown from transplants.
Domestic F3s from last years direct sowings.
Domestic x pimpinellifolium F2s from transplants.
Domestic x cheesmaniea F2s from transplants.
Domestic x pimpinellifolium F3s from last years direct sowings
Domestic x cheesmaniae F3s from last years direct sowings.
Domestic x habrochaites F2s from transplants.

Tomatillo: F2 mix roughly separated to sweet (yellow/purple) and green.

Ground cherry: F2 hybrid mix.

Grain corn mix: several litres of seeds. Cross between painted mountain and atomic orange. Extra fast with presence of nitrogen fixing airroots.

Bush bean mix: several litres of seeds.

Eggplants: Limited amounts to share. Possibly variable germination, as mentioned some had already germinated inside the fruit, but I still went ahead and saved seeds and later removed floaters. Possible that some have crosses with the african eggplant. I also have F2s from previous year, including some of the original crosses with the african eggplant. Those only produced a few fruits and no seeds for me, but maybe someone with better climate has better luck with them. Based on what I have been able to find, the cross itself should be viable and has been used to create comercial varieties.

Parsnips: Several litres of seeds. Total of a little more than 10 varieties grown together, few of which were F1s. So there are certainly some unstaple seeds, but no idea how much mixing there has been.

Carrots: Several litres of seeds. Similarly to parsnips some staple varieties and a few F1s. Didn’t check male sterility that carefully at this stage.

Raddish: Summer fast type F3s. Many fairly big carrot sized roots.

Some that I have little to share.

Summer squash: Some of the ones on survivor plot produced fairly good amounts. I still need quite a lot for next year as conditions are probably not going to be that much easier. I could still probably share small amounts for seed increase/genetic transfer.

Moschata: North circle butternut that probably crossed previous year and is so F2. Some of the fruits should be pollinated with pollen from the survivor plot. Similarly to summer squash sample sizes to share.

Besides those mentioned above (and not mentioned) I have seeds from previous years like sweetcorn, watermelon, basil. You can ask more and I might remember then better.

I don’t really need much seeds (as you might gather). There are still some that, especially if you have big excesses, which might be useful. High casualty rates, you know.

Survivor plot would welcome already mixed and preferably direct sown maximas, summer squash and field cucumbers. Carrot and parsnip seeds might also be nice for variety, although for this year I might not have a lot of space for them.

To regular plot similarly already mixed and preferably direct seeded okras, kiwanos and moschatas, especially if is known to be from faster types.

Also if you have any seeds, besides tomatoes, peppers and tomatillos, that are from my seeds and grown together with others or seeds that have been grown together with my seeds. So many species are on the edge here and having some adaptibility makes it more likely that I can get some genetic transfer.

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Got some awesome emma and maybe a couple of midnight roma seeds. Kailan as well and maybe hon tsai tsai to have to check. Let me know if it is of any use!

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Hi Corrie. Welcome! This is a friendly community, you’ll find. We have the seed train as well, a surprise package voyaging allhroughout Europe, chuck full of the most amazing seeds ever. You can tell us you want to join here…

https://goingtoseed.discourse.group/t/serendipity-seed-swap-eu/1507

And if you would like to share some words about where you garden and what you like growing in what conditions etc, it makes it easier to get to know you, and people will go " Blimey! My word some other person from Transilvania! I thought I was the only Transylvanian gardening!"
Or some thing like that. And then they cry tears of purest joy, dancing about the room in extacy.

https://goingtoseed.discourse.group/c/introduce-yourself/9

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Hi Corrie,
welcome and thank you very much for your suggestion :slightly_smiling_face:. Don’t hesitate to tell us about what you grow and your garden, which looks great for having such unusual vegetables.

I haven’t updated my seed search, as I found a lot this winter…probably too much to sow in time.
I’ll contact you later about the Kailan and tsai tsai as they’re very unknown vegetables here.

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