Choosing daylilies?

I need help choosing daylilies. (I'm in Salem, right about 7b-8a.) I'm not sure what kinds I should be choosing - evergreen, semi-evergreen, or dormant - or if it really matters. What's confusing me is that there's a nursery in Hillsboro selling all three kinds, and I was told several years ago that evergreen daylilies won't grow here.

Help, please? :)

I grow them all. No problem around here. Even if the tops freeze back they start growing again when it warms. It may be a different story where winters are really cold. I even have some nice evergreens from Florida and the only real difference I see is that they don't multiply very fast but they are very hardy and the flowers are great. So I choose them based on the flower, not the foliage.

pardalinum, where do you order your Daylilies?

Well I sure don't buy those real expensive ones! Most of mine are from Gilbert Wild, some are Munson seedlings (a hybridizer in Florida who has since passed away I believe), local nurseries, and I now have some seedlings coming along. Seeds were purchased on the Lily Auction site...

http://daylily.com/cgi-bin/auction.cgi

ilithiya, REALLY .... Daylillies are zone 4 plants usually. In the Willamette Valley anyone (brown thumbs and all) should be able to grow every possible variety of daylilly that exists. I read where there are something like 3000 varieties. Choose the ones you like and go for it.