It's been a few years since I've been on Dave's garden. I'm wondering if there is any new sources of seed for those of us who aren't retailers for Xeriscape seeds. I mean a source that just carries Xeriscape? Or do any of you have a list of them all and where one can find their seeds? Several years ago you could main just buy plants unless you were talking about herbs.
Just wondered if things have changed any?
I've been happy with seeds from Plants of the Southwest http://www.plantsofthesouthwest.com/ They're in a warmer climate than you are so you'll have to doublecheck hardiness before ordering, but I'm sure they'll have some things that would work for you.
The book "Xeriscape Colorado" has lists of recommended annuals, biennials, and wildflowers you can grow from seed. If your Library doesn't have it, ask if they can get it in interlibrary loan. Check it against Washington's list of noxious and invasive weeds - what is a wonderful wildflower in one part of the U.S. can be a real pest elsewhere.
I use Plants of the Southwest and now I will have to try Alplains and Rocky Mountain Rare Plants.
http://www.wildseedfarms.com/ in Texas sells Wildflower mixes for various parts of the country (may contain non-natives). What I like about their catalog is that it has pictures of the seedling when it sprouts so you will know what is what, and what is weed.