It would help to know what climate the bush is growing in. Are you in Florida? Alaska? It does make a difference Are the flowers fragrant? You can add this information to your profile (see Llcenter's profile above, and mine here).
Yes, Junebug is correct. It's a Blue Dogbane or Bluestar (Amsonia sp.). It reminds me of Amsonia tabernaemonta ssp. salicifolia, though there are other similar species.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.