Butterfly Milkweed: The Orange Beacon for Pollinators & Monarchs

Few perennials rival butterfly milkweed (Asclepias tuberosa) for vivid orange flowers, drought tolerance, and pollinator magnetism. Blooming late spring when nectar is scarce, it's a critical early-season resource — and a larval host for monarchs.

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Quick Facts

• Botanical name: Asclepias tuberosa
• Common name: Butterfly milkweed
• Native range: Most of N. America except Canadian Atlantic + NW states/provinces
• Hardiness: -40°F (USDA zones 3a–10b)
• Habitat: Oak savannas, prairies, woodland edges
• Water: Medium to dry, well-drained; sand to loam
• Light: Full sun
• Size: 1–2 ft tall, 2–2.5 ft wide
• Key need: Well-drained soil, no compaction or clay

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Distinguishing Traits

Unmatched vivid orange flowers. Pair with blue/violet natives for electric contrast. Low mounding habit suits borders, massed swaths, rock gardens.

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Design & Companion Planting

Slow to emerge in spring — interplant with early bloomers like American pasque flower (Anemone patens) or prairie smoke (Geum triflorum) that like similar dry conditions.

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Planting Notes

• Deep taproot = no moving/dividing mature plants.
• Collect seeds as pods split; store cool/dry; cold-stratify 60 days in damp sand before spring sowing.
• Unlike other milkweeds, no milky sap.

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Pollinator Notes

Larval host for monarchs (though caterpillars often prefer common/swamp milkweed). Nectar feeds butterflies, moths, bees, ants, wasps. Unique pollinia (sticky pollen sacs) attach to large pollinators' legs — small insects can get trapped.

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Shown: Small carpenter bee (Ceratina sp.)