A magnet for butterflies and other pollinators, Butterfly Weed is a North American perennial valued for its summer flowers in brilliant shades of orange to red. Also called Pleurisy Root in reference to its historic use in treating lung ailments, Thomas Jefferson included this species in a list of native medicinal plants in his book, Notes on the State of Virginia (1780s). Jefferson-documented: This plant was documented by Thomas Jefferson in his Garden Book, Notes on the State of Virginia, or other writings.
Sow Butterfly Weed (Asclepias tuberosa) seeds indoors 8-12 weeks before last frost date at 70˚F. For improved germination, provide 4 weeks of cold, moist stratification before sowing. Transplant to 3" pots once they have several true leaves, then harden off and transplant outdoors after last frost. Alternatively, direct sow seeds outdoors in fall. Approximately 40 seeds per packet.
|Exposure||Planting Method||Planting Depth||Days to Emerge||Plant Spacing||Size at Maturity||Zones|
|Full Sun to Light Shade||Transplant||Surface Sow||21-40 after chill||1-1.5' apart||1-2.5'H||3-9|
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