Hemp Dogbane
Apocynum cannabinum
Last reviewed: June 2026
Hemp Dogbane is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (last reviewed 2026-05-21). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.
Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.
Light
full sun
Water
medium
Size
24"–60" H × 12"–24" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, AZ, CA and 44 more states
Pollinators
bees, butterflies, moths
Browse plants for this ecoregion
Indian-hemp is a tall native perennial that produces clusters of small white or greenish flowers during summer months. This upright plant spreads moderately and goes dormant in winter, losing its leaves completely.
In an HOA neighborhood
Hemp Dogbane takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Name contains 'hemp' which may cause neighbor concerns
- Can look weedy and unkempt in dormant season
- Tall informal growth habit lacks structured appearance
Wildlife value
Excellent pollinator plant that attracts bees, butterflies, and moths with its summer blooms. The flowers provide nectar for a variety of beneficial insects.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Pollinator Patch flags toxic plants like Hemp Dogbane and shows pet-safe natives for your ecoregion instead.