Answer: There's an excellent book that should answer all of your questions. It's called The Pacific Northwest Gardener's Book of Lists. All information was compiled by retired Extension Agent Ray McNeilan and his wife Jan, (the current Master Gardener Program Leader for Oregon State University). Local bookstores will have a copy (ISBN# 0-87833-956-6), as should your local library. It's a great resource!
Q&A Library Searching Tips