"Purpleicious" (sp?) (This will be its second full season in our garden. I like it thus far as it has lots of flowers in early June and as it attains a moderate height of 2 feet with blooms there is always space to sneak it into one's garden).

"Nimbus" (I planted two of these late last summer. They survived the winter but the flowers seem extra short lived. The total height is close to 3 feet).

"Sparkler" (This year and last has seen a significant decrease in flowers. It gets to 4 feet including blooms):

It would be great if you could add pictures of your thalictrum throughout the growing season.