Family: Asclepiadaceae

Scientific Name: Asclepias tuberosa Hello Yellow

Common Name: Hello Yellow Butterfly Weed

Description

Hello Yellow Butterfly Weed (Asclepias tuberosa) is a yellow-cultivated variety of the native brilliant-orange Butterfly weed.

Pronunciation(as-KLEE-pi-as)(tuu-be-ROW-sa)
Plant TypePerennials Hardy
Hardiness Zone4-9
Sunlightfull
Moistureaverage to dry
Soil & SiteGrows best in sandy, well-drained soils, and does poorly in wet soils
FlowersFlowers are bright yellow. The inflorescence is a many-flowered umbel on stalks. The flower clusters can contain 25 or more individual 3/4-inch flowers. Flowers are a nectar source for hummingbirds, butterflies, and many other pollinators, and leaves are a food source for monarch butterfly larvae (caterpillars).
FruitThe seed pod is bean-shaped, 6 inches long by 3/4 inch
LeavesThe leaves are narrow, stalkless (sessile) or have a short petiole, usually alternate but occasionally opposite, and hispid (hairy). Leaves are a food source for monarch butterfly larvae (caterpillars).
RootsForms a deep taproot that can make it difficult to transplant.
Dimensions20-24 inches in spread and height
MaintenanceProduces a deep taproot, making transplanting difficult. Mark the plant's spot. It breaks dormancy late and can be unknowingly damaged early in the spring.
Propagationseeds
Native SiteWide spread across North America.
Cultivar OriginOriginates as a specific, naturally occurring yellow-flowered seed strain.
Misc FactsHello Yellow is a native cultivar, which is a cultivated version of a native plant.
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