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Whorled milkweed
Asclepias verticillata
Apocynaceae
 

Copyright by: Keith A. Bradley

General Landscape Uses: Primarily recommended for natural landscapes and habitat restorations. Also wildflower and butterfly gardens.

Ecological Restoration Notes: A rare understory herb in pinelands.

Availability: Grown by enthusiasts and occasionally by native plant nurseries. Available at Indian Trails Native Nursery in Lake Worth (561-641-9488).

Description: Medium wildflower with erect slender stems; barely noticeable when not in flower.

Dimensions: Typically 2-3 feet in height. Taller than broad.

Growth Rate: Moderate.

Range: Widespread in North America south to Miami-Dade and Collier counties.

Map of select IRC data from peninsular Florida.

Habitats: Pinelands.

Soils: Moist, well-drained sandy soils, without humus.

Nutritional Requirements: Low; it grows in nutrient poor soils.

Salt Water Tolerance: Low; does not tolerate flooding by salt or brackish water.

Salt Wind Tolerance: Low; salt wind may burn the leaves.

Drought Tolerance: High; does not require any supplemental water once established.

Light Requirements: Full sun.

Flower Color: Greenish-white or white.

Flower Characteristics: Semi-showy.

Flowering Season: Spring-summer.

Fruit: Slender pod (follicle) with wind dispersed seeds.

Wildlife and Ecology: Larval host for queen (Danaus gilippus) and possibly soldier (Danaus eresimus) butterflies. Nectar plant for monarch (Danaus plexippus) and other butterflies.

Horticultural Notes: Can be grown from seed.


Copyright by: Keith A. Bradley

Copyright by: Keith A. Bradley


Other data on Asclepias verticillata available from:



 
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