Asclepias obovata Elliott
Asclepiadaceae (Milkweed Family)
Synonym(s): Asclepias viridiflora var. obovata
USDA Symbol: ASOB
Perennial herb 6 to 3 in height. Leaves opposite, 1 to 3 in length, 1/2 to 1-1/2 in width, variable, short petiolate. Stems and leaves soft tomentulose. Inflorescenses terminal and axillary, many-flowered. Flowers greenish yellow with orangish tinge. Habitat sandy soils in pine and oak woods; occasionally in field and on roadsides.
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Plant CharacteristicsDuration: Perennial
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Shape: Obovate
Leaf Pubescence: Tomentose
Leaf Margin: Entire
Leaf Apex: Acute
Leaf Base: Rounded , Truncate
Leaf Texture: Leathery
Breeding System: Flowers Bisexual
Inflorescence: Cyme , Umbel
Size Notes: Plant 6 to 3 in height. Follicle to 12+ cm in length.
Fruit: 12+ cm.
Size Class: 0-1 ft. , 1-3 ft.
Bloom InformationBloom Color: Orange , Yellow , Green
Bloom Time: May , Jun , Jul , Aug , Sep
DistributionUSA: AL , AR , FL , GA , LA , MS , OK , SC , TX
Native Distribution: SC south to FL and west to TX, AR and OK.
Native Habitat: Sandy soils in pine and oak forests.
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade , Shade
Soil Moisture: Dry , Moist
Soil pH: Acidic (pH<6.8)
Drought Tolerance: Medium
Heat Tolerant: yes
Soil Description: Sandy soils.
BenefitWarning: All parts poisonous.
Conspicuous Flowers: yes
Interesting Foliage: yes
Larval Host: Monarch butterfly larval food.
Nectar Source: yes
Value to Beneficial InsectsSpecial Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Supports Conservation Biological Control
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
BibliographyBibref 293 - Manual of the Vascular Plants of Texas (1979) Correll, D. S. & M. C. Johnston
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Additional resourcesUSDA: Find Asclepias obovata in USDA Plants
FNA: Find Asclepias obovata in the Flora of North America (if available)
Google: Search Google for Asclepias obovata
MetadataRecord Modified: 2009-09-14
Research By: JAM