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Hi DaveGood to see those seeds germinating! Did you have a warm late summer/autumn? I have been wondering about trillium germination - some years I get germination during the first winter from fresh seed, other years I don't. I wonder if germination depends on warmth in late simmer? Last year I tried an experiment. I sowed 3 pots of T. hibbersonii and kept them in the greenhouse until late autumn, then they went outside in the open for winter. The "control" pot went straight outside, where it enjoyed our mediocre summer temperatures (ie, 15 or 16C most of the time!). The 3 pots which had a warm period germinated like cress in early spring, the control pot has got a mere 2 seedlings, which appeared much later. I will try this again this summer.I would show a photo, but I can't get my head around resizing on my new android tablet. The photos are all too big.
I agree Carolyn, although ideally it would be good to control for seed quality and provenance too. For example, wild-collected seed of T. erectum I received from Gabriela last August gave more or less full germination this spring (as did grandiflorum, also w/c in S Ontario).
Thanks Gabriela. Yes I should have been more precise and distinguished between germination (presumably last autumn) and appearance of seed leaves about ground this spring. I didn't count seed numbers but there's a profusion of seedlings so presumably few if any remain to follow next year (T. erectum included). Likewise, Anemone, Hepatica & Sanguinaria seed from you last year also germinated very well. Nevertheless I like Carolyn's idea for our temperate oceanic climate in this part of the world, giving woodlander seed from continental climates more reliable late summer warmth by keeping pots in the greenhouse until late autumn.
The summer just passed was a non event here and although autumn was wonderful with settled weather, fresh 'home' seed I sowed back in Jan, Feb, March and placed outside are showing no sign of movement .......