About 8 ft tall!!! Can anyone help
Isn't it gorgeous
P.S. Love your stone wall ... very envious
If it is that tall, I think it more likely to be either Thalictrum flavum subspecies glaucum, or Thalictrum sphaerostachyum. Both have yellow flowers and grow to 6ft or so.
Fidget is probably right
If anyone gets a chance to find Thalictrum lucidum , give that one a try (greenish/yellow) flowers with fern like green foliage !