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Swamp Milkweed
Swamp Milkweed botanical plate
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Swamp Milkweed

Asclepias incarnata

Honeybees are drawn to swamp milkweed for its abundant nectar, especially during peak bloom from July to August, offering a reliable late-summer resource when other flowers may fade. The pollen, packaged in pollinia, is largely inaccessible to bees, making nectar the primary reward. It prefers consistently moist soils and full to partial sun; while not invasive, it can self-seed in wet areas and may require division to control spread.

Nectarhigh
Pollenlow
BloomJuly–August
USDA zones3-9
TypePerennial
Sunpartial
NativeEastern and Central North America
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