About a year ago I attended a presentation in Bellevue, Washington put on by
a gentlemen named Brett Johnson. He had conducted some testing of many
different plants to determine what the local hummingbirds liked. From this
testing he had put together a pamphlet which ranked which plants worked for
attracting hummers. You can try to reach him at his nursery, Green Man
Gardens, at 206-232-5734 or email him at BnBJohns at msn.com

Hope this helps.

Paul Chamberlin
Lake Stevens, WA