seeding

Seeding annual plants for rare plant restoration and reintroduction

I have a project dealing with annual plants on the Channel Islands. We hope to bulk up some existing populations, but also create new patches. Has anyone had success with seeding rare annuals in Mediterranean systems? I'm worried about seeds staying in place, being predated, and getting sufficient rain for germination. Given that these are diminiutive annual plants and the biosecurity challenges of working on islands, growing and outplatning seedlings is not practical.

Seeding annual plants for rare plant restoration and reintroduction

My colleagues and I are working on a large rare plant project on the Channel Islands in California. One of our objectives is to increase population size of small occurrences and also establishing new populations in suitable habitat to provide redundancy. For the annual plants in our project (e.g., MalacothrixPentachaetaThysanocarpus) and possibly one Dudleya species, we plan to use locally collected seed, bulk that seed in our greenhouse, and then return it to the islands. I know that seeding often has low success rates.