Beginner Gardening: Perennials that are 4 ft tall in zone 5 by now- not shrubs, 1 by cheerpeople

cheerpeople wrote:
thx for that suggestion.
Yes I just got that one last year at a MG plant sale!
Right now it is only 1 ft tall.
Thx for the warning about spreading. I always check that on the plant info here before I plant things now. I also plant them in a observation garden until I'm sure they'll behave. I don't have time for naughty plants. Not every plant they sell is a good idea.
I see it's doubled in size in a year so I kept it in check by selling half.

So far this year again, thalictrum is the tallest perennial at 5' 6" by june 1st.
:)