 Christmas trees
Field crops
Fruit
Home and yard
Nursery and landscape
Turfgrass
Vegetable
Diagnostic Services
Soil/Plant Nutrient Lab
Enviro-weather
Regional IPM Center
Pesticide safety
Organic: New Ag Network
Invasive species
Sustainable ag & food systems
MSU ANR departments
MSU Extension
Site index
Contacts/permissions |
| Hemp dogbane - Apocynum cannabinum L. |
| Home > hemp dogbane |
 |
| Hemp dogbane leaf. |
 |
 |
| Young hemp dogbane plant. |
Hemp dogbane flower clusters. |
 |
| Hemp dogbane fruit. |
|
Life cycle: Erect, patch-forming perennial.
Leaves: Opposite, narrow oval to egg-shaped, 2 to 5 inches long with smooth margins. The upper leaf surface is usually pale to bluishgreen and smooth; the lower leaf surface may be sparsely hairy. Leaves are smaller than those of common milkweed and exude a milky sap when damaged.
Stems: Erect, up to 6-foot-tall, slender, hairless, reddish stems are herbaceous and multibranched at the top and semiwoody at the base. Stems exude a milky sap when damaged.
Flowers and fruit: Small, white to greenish white, bell-shaped flowers are found in flat- to round-topped
clusters. Fruit are 4- to 8-inch-long, narrow, reddish brown, sickle-shaped capsules that usually occur in pairs. Pods split open at maturity to release small, spindle-shaped seeds, each with a tuft of long, silky hairs that aid in wind dissemination.
Reproduction: Seeds, creeping roots and rhizomes. |
|
Similar weeds: Spreading dogbane
(A. androsaemifolium L.) Differs by having a preference for a drier habitat, usually shorter height, often drooping leaves and more distinct, usually pinkish white flowers. |
|
| |
|
