Seeds from this Asclepias viridiflora or better know as Green Comet Milkweed. A native of the western US, this species is endangered in some parts of the county. Growing 1 to 3 feet tall, they like sandy or rocky soils in wooded areas or clearings. The pale green flowers are 14 inch across and bloom from June to Septemeber. 4-6 weeks of stratification suggested for good germination. Zones 3 – 8.