“Red Swamp” Milkweed 6985


SKU: 622a142d48f0 Categories: ,


Beautiful Ontario native plant at home in wetland areas. Very important plant for pollinators and butterflies. Monarch butterflies (Danaus plexippus) only lay eggs on plants in the milkweed family. The milkweed host-plants are the only food Monarch caterpillars eat. Milkweed is no longer listed as an Ontario noxious weed. Note that the sap contains cardiac glycosides that are poisonous to humans and livestock if ingested in significant quantities.  Don’t eat any part of Milkweed plants. Perennial hardy to Zone 3.  Packet $1.99. 1 g $7.75. 5 g $23.10. Please use the drop down menu below to place your order.

How to Grow

140 to 180 seeds per gram. Naturally stratify seed by sowing directly outdoors in the fall in a sunny site – cover seed very lightly with soil. Indoors sow seed in a soil-less medium in early February, barely cover seed as diffuse light aids germination. Stratify seed by placing container in a refrigerator or other cold place for 3 months. Bring the container out and keep at 20 C (70 F) for the 10-18 day germination period. Grow on under lights at a slightly cooler temperature before hardening off and transplanting outside after the danger of frost has passed. Plants grow 60-120 cm (2-4′) tall. Seed from mature plants disperses easily by wind action.

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