Asclepias incarnata (Swamp Milkweed) [20 Seeds]

$3.95

Germination Information: I recommend these seeds for experienced seed-starters only, because they may require some patience. The easiest approach is to sow the seeds (barely covered with growing medium) in fall to late winter, setting them outdoors in a spot protected from mice so they can get a chilling period and then germinate when conditions are right in spring.

If you sow after February, set the pot in a plastic bag in your refrigerator for about a month before moving it to a warm, bright place for germination. (Remove the bag if the pot will be exposed to any direct sun.)

It is possible that these seeds could germinate if you sow them in warm, moist, bright conditions. But if you try that and no seedlings appear within 3 weeks or so, then try the refrigerator-chilling approach above before moving them back to warmth and light.

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Description

Swamp milkweed (Asclepias incarnata) produces clusters of fragrant, pink flowers in mid to late summer atop 3- to 5-foot-tall stems. This U.S. native naturally grows in moist to wet soil but can adapt to average garden conditions. Like common milkweed (A. syriaca), swamp milkweed serves as a food source for monarch butterfly larvae, which feed on the leaves. The flowers also attract a variety of adult butterflies, as well as other pollinators. Unlike common milkweed, swamp milkweed tends to stay in distinct clumps, so it can be a good option for smaller yards. Full sun. Perennial; Zones 3 to 8 or 9.

Collected in September 2020. Provenance is Bucks County, PA (seeds are from wild plants growing in my meadow). At least 20 seeds.

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