Portland's Watershed Revegetation team wants to improve ways to restore native vegetation after removing invasive ivy in our forests. Past restoration efforts https://www.portlandoregon.gov/bes/article/422962 have had mixed results.
Reveg is studying the best times to seed forests, how much seed to use, and additional species that can establish from seeds. Fringecup (Tellima grandiflora), Inside-Out Flower (Vancouveria hexandra), and Waterleaf (Hydrophyllum tenuipes) are among the species Reveg is experimenting with.
In 2012, Reveg Program staff began collecting native seeds at sites around Portland, mostly in Forest Park. Go to the program website to learn more about Reveg and native seed banks.