I would contribute to your seed supply;
I can do that with many species, I can collect seeds from my own land, but mostly of my plants are not rocky garden plant, in the usual sense, they are growing in a rocky land, with poor draining more or less acidic soil.(shale bedrock)
I can soon collecting seeds of a half dozen species and / or varieties of cyclamen, hardy to Z7 or more, several species of hellebores and fertile hybrids of H. orientalis group, hardy minimum Z, acidic and drought tolerant, and soon afterwards seeds of paeonia mascula, from a wild local strain, apparently now extinct, and which I multiplied a lot.
And later from some other paeonias species.
Most of these seeds do not like dry storage too much, and normally I harvest only on precise demand.
I can assume a fear of storage in the fridge until your reception period, knowing that a sowing in autumn is preferable for these species.
And I can of course harvest seeds for most species on my list, without guaranteeing success for each one, not yet retired and still very busy with my job.
But I need to know what is useful and interesting to harvest, and how to proceed for the expeditions.
And conversely, how to order certain species, knowing that I usually leave France around January 15th, for a return at the beginning of March (this year, around the 15th too);
right in the period of orders and shipments of seeds ...
I often collect exotic seeds during my travels, for my correspondents living in warmer regions
(Z9 minimum, and warmer), but this can sometimes also interest "Nordic" collectors ... let me know if it's useful that I propose that...
I have also a lot of hardy cacti, Z7 to supposed Z5.
someones could be interest some people. But most of them haven't exact ID, most of them were obtained by sowing, and re-sowing of the rare survivors, may be hybridized, the varietal purity not being my goal, (for any of my species I use that matter) but the resistance to the climatic conditions of more and more harder in my area.
Only the survivors interest me, not their pedigree, because the optics is that they can push without watering, and qyasi without human intervention once implanted ...
Idem for agavaes, but they don't give seeds yet.
My favorite breeding method is sowing, and even if I get plants in vegetative form, this remains the goal.
As soon as I have enough seeds, I sow in difficult, even terrible conditions, and only keep the dynamic survivors, which I then re-sow;
So, for exemple, I got humilis chamaerops that laughed softly during the 2018 and 2012 cold spells, with negative T ° peaks close to -20 ° C for days, and alternates brutal freeze / thaw during weeks...
I had planted kilos of seeds, harvested from individuals surviving the cold wave of 2018, and I continue, for a veeeeery tiny percentage of survivors ...but I have a lot of ground to do these tests, that I let evolve without intervention, and that I am sometimes surprised to find years after I have forgotten them!
(but these ones are realy slow growers, and still don't give seeds);
So, if you can give me some precise indications, I would be happy to contribute ...
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