I am in Illinois, zone 5a. Are your seeds for centranthus ruber from last year? I have a few seeds from last year, need to check and see what I have left. As I stated before, I do not do very good woith seeds so I usually do not bother to collect them. I may be able to collect some seeds from the native Dames Rocket or spiderwort. Most of my plants for 2012 have not set seeds yet, but will have jack in the pulpits which are native later on this summer. I do not grow wildflowers as such, mostly perennials for my zone and native woodlands. Stay in touch. Marsha
