That is so cool, and congrats! I wasn't able to last year, but I am hoping this summer that I'll be able to grab some more tubers. I always get nervous with them during dormancy, but then they all pop back up again and reassure me. They survive outside surprisingly well. I had some TINY D. moorei in a 4" pot that were blasted with full sun and 100+F temps this summer and didn't skip a beat.
One thing I always do is never grow them in standing water. Ever, not even in active growth. Frequent top-watering exclusively.
I don't know when they will go into dormancy here as it will depend on the outside temps, but it will have to warm up quite a bit more here. I am hoping to get at least another month or two before they start into dormancy.
Yes, but not as tall as D. modesta can get from what I understand. I have not measured its height for a while, need to document that soon though. The one next to it in the same pot is producing flower buds now and only a little more than half the height of the other one. I am still waiting for flowers on the D. menziesii, which is a shorter and fuller plant by nature.