The Site Gardener

Plant Library

Explore 4,545 plants, with photos and growing details.

Back to Tools

← Back to plant results

Asclepias tuberosa

Butterfly Milkweed, Butterfly Weed

A standout native perennial celebrated for its brilliant orange flower clusters, tidy habit, and exceptional value to monarch butterflies and pollinators. Unlike many milkweeds, Asclepias tuberosa prefers dry, well-drained soils and has a deep taproot that makes it extremely drought tolerant once established.

Key features



Width: 18–24 in (1.5–2 ft)



Height: 24–36 in (2–3 ft)



Flower color: Bright orange (occasionally yellow or red-orange forms)



Bloom time: Late spring to mid summer



Foliage: Narrow, lance-shaped green leaves



Form: Upright, clump-forming



Life cycle: Herbaceous perennial



Growing conditions



Sun: Full sun



Soil: Dry to medium, well-drained; prefers sandy or gravelly soils



Water: Low; very drought tolerant once established



Hardiness: USDA Zones 3–9



Landscape use



Pollinator and butterfly gardens



Native plantings and meadows



Perennial borders



Prairie and xeric gardens



Roadside and restoration plantings



Notes



Important larval host plant for monarch butterflies



Highly attractive to bees and other pollinators



Generally deer resistant



Does not transplant easily due to deep taproot



Seed pods provide late-season interest

Plant type
Perennial
Height
24-36"
Width
12-24"
Hardiness zones
3–9
Sunlight
Full Sun
Growth rate
Moderate
Bloom time
Early Fall, Early Summer, Late Summer, Summer
Flower color
Orange
Leaf color
Green
Fall color
Green
Attracts
Butterflies, Hummingbirds
Soil
Clay, Loamy, Well Drained
Landscape use
Accent Plant, Container, Mass Planting
Shape
Broad Upright, Clump
Fruit
Yes
Fragrant
Yes
Deer resistant
Yes
Drought tolerant
No