Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.
Search native plant database:
Asclepias stenophylla A. Gray
Slimleaf Milkweed, Narrowleaf Milkweed, Narrowleaf Green Milkweed
Synonym(s): Acerates angustifolia, Polyotus angustifolius
USDA Symbol: asst
USDA Native Status: L48 (N)
Herbaceous perennial with usually solitary, narrow, mostly glabrous to puberlulent stems 8 to 40 in height. Leaves alternate to approximate or opposite, linear, 2-7 in length; sessile. Inflorescences axillary from upper leaf nodes in many-flowered umbels. Flowers showy; color pale greenish-white to pale yellowish, sometimes purplish tinged. Follicles 9-12cm long.
Plant CharacteristicsDuration: Perennial Habit: Herb Root Type:
Tuberous Leaf Arrangement: Alternate
, Opposite Leaf Complexity: Simple Leaf Shape:
Linear Leaf Pubescence: Glabrous
, Puberulent Leaf Margin: Entire Leaf Apex: Acute Breeding System:
Flowers Bisexual Inflorescence: Axillary
, Umbel Size Notes:
Plant 8-40 in height. Flower:
Follicles 9-12cm in length. Size Class:
Bloom InformationBloom Color: White , Yellow , Green
Bloom Time: Jun , Jul , Aug
Bloom Notes: Flowers in summer.
, WY Native Distribution:
United States Great Plains. Native Habitat:
Stable prairies and limestone glades.
Growing ConditionsWater Use: Low , Medium
Light Requirement: Sun
Soil Moisture: Dry
Soil pH: Alkaline (pH>7.2)
Drought Tolerance: Medium , High
Cold Tolerant: yes
Heat Tolerant: yes
Soil Description: Rocky or sandy limestone soils.
Monarch butterfly larval food. Nectar
source for many insect and birds. Use Food:
All parts poisonous. Conspicuous Flowers:
Butterflies Larval Host:
Monarch butterfly. Nectar Source:
PropagationPropagation Material: Seeds
Record Last Modified: 2012-12-19
Research By: JAM