I would look around in your area in other peoples yards. You may not be able to get the named varieties, but you should be able to get some seed that is good for your area. I often check out other peoples landscapes and even commercial building landscapes and collect seed. I have been very successful with California poppy in the different colors and columbine (from my own yard) and a few other plants. The seed seems to be more reliable and vigorous she I collect locally and just scatter where I want it.
