NEW ARRIVAL for 2025 Asclepias viridis Green Milkweed. Also called Spider Milkweed Green Milkweed is a native, perennial forb or herb with alternate, entire leaves. The leaf margins are often wavy. Flowers are white and in an umbel, mostly one per plant. Upon close inspection, some rose or purple color is evident in the center of each individual flower (gynostegium). The milky substance that is exuded when a plant part is broken is very sticky, much resembling “Elmer’s glue.” These milkweeds bloom from late spring to middle summer. This milkweed is common in pastures from Kansas to Texas. Contains 20 seeds Planting tips: Cold stratify or soak in water for 24 hours prior to planting for optimal germination. Milkweed seed can be planted directly in soil, or started indoors. You can sow milkweed seeds by scattering them on the soil surface 1/4-1/2 inch apart, and then cover them with about 1/4 inch of additional soil. Water the area frequently after planting until plants become established.