Heartleaf milkweed, Asclepias cordifolia
Heartleaf milkweed, Asclepias cordifolia seed
Half gram of Asclepias cordifolia seeds from northern California. Seeds collection occurred in the summer of 2022, August. Germination difficulty is high. Weekly freeze thaw cycle recommended to prepare the seed to germinate. Germination rate below 10% is probable despite viable seed being over 90% . Half gram packet is approximately 25 seeds +/-5 seeds.
View Heartleaf milkweed observations on iNaturalist
View Heartleaf milkweed plant information at Wildflower.org
View Heartleaf milkweed plant information at Plants.USDA.gov