Narrow Leaf Milkweed (Asclepias fascicularis) is western native species with huge white flower clusters & big, narrow leaves. A host plant for Monarch populations on the West Coast & Great Basin, this ornamental species is easy to grow & thrives in a wide range of growing conditions. It is also a nectar source for many species of butterflies. Narrowleaf milkweed seeds germinated easily for us with no cold stratification or other pre-treatment needed. Plant the seeds about 1/8-1/4 deep & kept them moist. Germination occurred within a couple of weeks. These seeds can be fall planted, started indoors before the last frost, or started outdoors in the spring. Narrowleaf Milkweed | Asclepias Fascicularis Packet Of 12 Seeds With Free Shipping