Plant Characteristics
Botanical Name: Asclepias speciosa
Common Name: Showy Milkweed
Native: Native
Sun: Full Sun
Water: Low
Bloom Time: Summer
Bloom Color: Dusty pink
Pollinators: Bees; Butterflies; Moths
Deer Resistant: Yes
Mature Size: W 1'-2' x H 2'-4'
Soil: Well-drained; tolerates lean soil
Plant Type: Herbaceous perennial
USDA Zones: 3 to 9
Spread Habit: Spreads by rhizome
Available As: Live plant
Native Region: Great Basin; Colorado Plateau; Wyoming Basin; Columbia Plateau; Western Great Plains
Host Plant (Great Basin): queen, monarch
Growing Notes
Full sun and moist, well-drained ground. This is one of the thirstiest plants in the catalog, and it will not be happy on a dry, unwatered slope, so put it in an irrigated bed or a low spot that holds moisture. Space about 18 inches apart. It is naturally tall, and this compact selection stays upright without staking.
Water: Moderate
Sun: Full Sun
Soil: Moist, well-drained; wants more water than most of this catalog
Mature size: 18 to 24 in by 18 in
Maintenance
Pinch the growing tips once in early summer for a bushier plant and more flowers, if you want them. Leave the stems standing through winter, then cut back in late spring, leaving about a third for insects. Divide every three years, since the clump declines in the middle if left alone too long. Do not let it dry out completely in summer.