Your best one so far.
So what is the type of perennial plant which, when you first winter sowed it, prompted you to winter sow more the next year and the next?
For me it has to be Astilbe. I could not believe my eyes when I saw those first containers three years ago. These teeny tiny things were just sprouting like the dickens and when I put them in the ground they were as happy as could be. Last year I had an Amethyst Arendsii bloom and was impressed. Actually there were over 20 of them... What a show! I gave some to neighbours and friends, and this year am just about to see two more varieties bloom.
Today I counted the yearlings and the two and three year olds, and I have well over 30 plants, some Chinensis and Pumilas as well, and that's not counting this year's babies. The success of sowing and growing this no fuss/no pest plant has prompted me to create a garden with them as the focal plant.
So what's your winter sowing mania?