Hi Rocky, welcome!
I live in snow country Canada.(Toronto)
The plant is a perennial and comes back in the garden in spring.
I take cuttings in the fall, put them in water and they will root. Then I just plant them in a pot and keep them on my windowsill over winter.This way I have Rue all year round. In the summer I just plant the stuff in the pot into the garden and take new cuttings in the fall.
Hope this helps.
Inda