I don't have any seeds, but i do have a couple of erythrina crista-galli shrubs that are very temperamental about frosts here in z9b CA. I don't think they would be a good choice for z8 since they are marginal for me and our average low for the winter is 35F. By the way, there are several erythrina species. Crista-galli is one of the hardier ones. The rest are too tropical even for me to grow.

Erythrina crista-galli grows in zone 7b as a die back plant. But blooms each year on new growth.
Ebay had plants a while back.

I grow E crista galli outdoors, E. crista galli x bidwillii outdoors, and we have the native Erythina called Coral Bean that grows wild here. The only one I grow under protection is the variegated "Sunshine Tree" (E. indica variegata)

There is an internet nursery in my town of Lake Charles, LA that sell several Erythrinas. They are a very reliable nursery.

Steve

Sorry, forgot to include the name. Ecolage.com.

Steve