Purple Milkweed (Asclepias purpurascens) Quick Facts:
Host plant to Monarch butterflies, nectar to many
Native to most of central, northeast and southeast US
Hardy in USDA zones 3a – 9b
Full sun to partial shade
Prefers fertile, moist, well-drained soil
Beautiful, fragrant purple flowers around July-August
2-3 feet tall by 1-3 feet wide
Space 1-2 feet apart
Seeds need 30 day cold stratification or fall sow
May take 2-3 years to flower, but some have bloomed the first year
We have seen Purple Milkweed plants die back early the first year (they don’t do much the first year), however, they will usually come back in mid spring next year so take care of the roots for the rest of the summer as if a plant was still there (good compost and water if it gets too dry)!
May take 2-3 years to flower.
** Purple Milkweed is easy to germinate and grow to a juvenile plant, but keeping it alive for more than one season, blooming, and setting seeds can be difficult. If the first-year plant grows to a height of a foot or more, you’ll usually have a bloom the following year. We are unable to give replacements or refunds on seed or plant purchases due to the fussy nature of this species.