thank you for your detailed answers.
I suspected something like that. I've already tried A. griffithii and failed, and I'd read that the seeds were often not viable.
For thunbergii, I have a pot that has made its 2nd spring, and I have nothing yet. But last year it wasn't sown until mid-March. Do I still have hope for 2025?
keeping a seedling pot just the right amount of moisture for so long isn't exactly easy.
For species that germinate more easily, I've had some success with leaching, in particular this year I've got a nice pot of A fargesii (12 germinations) but for ovale, amurensis or consanguineum, germination is very sparse: only 1 or 2 plants.
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