Showy Milkweed (Asclepias speciosa) is a common native wildflower, and the preferred host plant for the monarch butterfly in our area. This showy perennial features spherical clusters of pinkish/white star-shaped flowers that last from late spring to early summer. The flowers give way to large seedpods that open to disperse long, silky seeds. Use this plant in cottage gardens, pollinator gardens, or naturalized prairie or meadow areas. Showy Milkweed spreads by both seed and rhizomes, and can spread out of its area or overtake an area if it is not properly maintained. Plant in an area where this spread is desired, or contain its spread by planting in confined areas and clipping seed pods before they open and disperse seeds. This plant has a taproot and will not respond well to transplanting once established. Showy Milkweed is toxic to dogs, cats, horses, and people if consumed.
Photo Credit: Tom Koerner/USFWS
Each seed packet contains 0.25 grams, or approximately 40 seeds.
Showy Milkweed Seed
Native to Cache County: Yes
Irrigation Requirement: Very Low (Water to Establish)
Mature Size: 2-4' tall and 1-2' wide
Spacing: 18" apart
Bloom Colors: Pink
Bloom Season: May - July
Hardiness Zone: 3 - 9
Light Requirement: Full Sun, can handle some light shade
Deer Resistant: Yes
Salt Tolerant: Yes
Soils: Does well in a wide range of well-drained soils, including sand, loam, and clay.