Today I found out that these seeds I collected from supposedly A. Circinatum are starting to sprout. Last October I sowed these seeds into a small tray filled with my garden soil, and left the tray to over winter near one of my in-ground fig tree, protected by a snow pile. The snow pile thawed ca two weeks ago. And now I see the first three sprouts! I will up pot the content of the tray into a deep container right now, to let roots freely develop. It's a pity, that palmatum did not produce any seeds last fall.'
I have plenty from previous years. If you're interested, I can send you some. I have "unidentified" specimens that are close or similar to the plain palmatum, a couple that look more like amoenum, and quite a few from 'Ryusen' that develop, more or less, the weeping habit of the mother tree. PM me if you're interested : I already sent some up to Sweden, and down to greece, it's not that expensive. I can send them for free if yu're a bit tight, or you can send me , I don't know, a few herrings? No joke, I love herrings (with boiled potatoes, sour cream and some dill, yum yum...).
@AlainK Thank you for your kind offer. But AFAIK Palmatums need cold stratification for germination and hopefully these Palmatums in the Japanese garden in Tallinn perform better this summer/fall and provide me with handful of seeds(before the next suitable season for cold stratification). I believe that local seeds guarantee better hardiness than seeds introduced from south thousand of kilometers away. Besides, I have spent a small fortune for buying Palmatums (have bought total 3 trees, so this fortune is actually pretty tiny), but I lost first pair years ago and the last one this winter. I don't like to spend any money on maples right now, at least until I can prove, that they can survive here. Despite living pretty close to the Japanese garden, I have rather different climate, more distant from the sea, so my temperatures are wilder and more extreme. BTW, I don't know, what happened here, but last two herrings I boght here were so salty, that I could not eat them. I used to like herring, but now i don't know any more. I like whitefish (it's rare here, usually they visit our shores only for a few weeks in springs and autumns) and ide (pretty common catch here), caught from the Moonsund and prepared as sashimi.