By Littlenic999
North Yorkshire,
United Kingdom 
Hi - I've been trying to be patient and wait for this to flower but I can't take it anymore!! It does have tiny little buds waiting. It has shot up from nowhere to cover a sizeable area in my newly inherited garden. I wondered at some kind of Thalictrum? Or something from the carrot family?
I should say the previous owners motto must have been 'only grow invasive plants'
8 Jun, 2012
Answers
the foliage is beautiful - i think i will dig it up after flowering and dot it around the garden i love it - even before seeing the flowers
8 Jun, 2012
The flowers are very insignificant. If you plan to dot it around be aware that it does sprawl.
9 Jun, 2012
hi steragram - you're right, it's sprawling everywhere since the rain. the buds are staying stubbornly closed.
fingers crossed it might warm up soon. ooh what's that a flying pig? brrr
11 Jun, 2012
Not seen any yet but you never know...
11 Jun, 2012
Previous question
I think its one of the Ruta family (not graveolens though)
When it flowers with sprays of tiny yellow flowers you can see the similarity to thalictrum. I find the leaves very useful in flower arrangements, but have never found it spreading aggressively - easily kept in check once a year.
It does disappear completely in winter. I would dig most of it out and leave a small patch which makes a pretty filler for a difficult corner.
8 Jun, 2012