Plant Characteristics
Botanical Name: Asclepias tuberosa
Common Name: Butterfly Milkweed
Native: Native
Native Region: Eastern & Central N.A.; Arizona-New Mexico Mountains
Sun: Full Sun
Water: Low
Bloom Time: Summer
Bloom Color: Vivid orange
Pollinators: Bees; Butterflies
Host Plant: Monarch, Queen, Gray hairstreak
Deer Resistant: Yes
Mature Size: W 1'-1.5' x H 1'-2.5'
Soil: Sharply drained; lean, sandy soil, deep taproot dislikes being moved
Pollinator Value: Monarch host; high-visibility butterfly nectar plant
Plant Type: Herbaceous perennial
USDA Zones: 3 to 9
Spread Habit: Clumping; deep taproot
Available As: Live plant
Grow Notes
Full sun and sharply drained, lean, sandy ground. The deep taproot is the whole story with this plant: it makes it exceptionally drought-tough once established and it means the plant strongly dislikes being moved, so choose the spot and leave it there. Space about 15 inches apart. Do not amend the hole.
Water: Low
Sun: Full Sun
Soil: Sharply drained; lean, sandy soil, deep taproot dislikes being moved
Mature size: W 1'-1.5' x H 1'-2.5'
Maintenance
Leave stems standing through winter and cut back in late spring, keeping about a third. It is the last perennial in the garden to emerge, often not showing until late May, so mark the spot to avoid digging it up while it looks like bare ground. Never use systemic insecticide on it. Do not divide; best grown from seed.