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Marcus, Joseph A.
Asclepias viridis Walter
Green antelopehorn, Green milkweed
Synonym(s): Asclepiodora viridis
USDA Symbol: ASVI2
USDA Native Status: L48 (N)
Green antelopehorn is a native, perennial forb or herb with alternate, entire leaves. The leaf margins are often wavy. Flowers are white and in an umbel, mostly one per plant. Upon close inspection, some rose or purple color is evident in the center of each individual flower (gynostegium). The milky substance that is exuded when a plant part is broken is very sticky, much resembling “Elmer’s glue.” These milkweeds bloom from late spring to middle summer.
Globally, there are 2,000 – 3,000 species in the milkweed (Asclepiadaceae) family. In Texas, there are five different genera in this family, with 35 species in the Asclepias genus. Asclepias viridis is the most common milkweed in Texas ranging from deep east Texas to the Edwards Plateau and typically has wider leaves than Asclepias asperula.
Bloom InformationBloom Color: Green
Bloom Time: Apr , May , Jun , Jul , Aug , Sep
Bloom Notes: Flowers details are beautiful in how they are arranged in the cluster
, WV Native Habitat:
This plant can be found on roadsides or in prairies all over the state of Texas. The plant can live in dry, limestone soil without much water and can still produce showy, globe-like flowers. Listed as endangered
in Indiana (USDA)
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Moist
Cold Tolerant: yes
Heat Tolerant: yes
Conditions Comments: This is another member of the milkweed family that certain butterflies love. It can be found growing in rich or poor soils and blooms off and on over ther growing season through the end of summer. Has a spreading, open growth form. Requires little water and full sun.
All plants in the genus
Asclepias are probably somewhat toxic, some fatally so, to both humans and animals. The sap
of some causes skin irritation in humans. Sensitivity to a toxin varies with a person’s age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plant’s different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil. Conspicuous Flowers:
Butterflies Nectar Source:
PropagationPropagation Material: Seeds
Commercially Avail: yes
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Record Last Modified: 2012-06-09
Research By: NPC, RLU, DEW