Phorodon cannabis

What is it?

The cannabis aphid (also known as the bhang aphid or hemp aphid) is a pest aphid found on the leaves and stems of cannabis. Aphids have “piercing-sucking” mouthparts to feed on plant fluids. When aphids occur in high numbers, their feeding can stress plants and cause wilting, yellowing and other damage. Cannabis aphids are also potential vectors of plant pathogens.

How will it impact Oregon?

If cannabis aphids become established in Oregon they have the potential to be a serious pest of the emerging hemp industry. Infestations will impact plant health and vigor, stress plants, and potentially spread viruses and other plant pathogens.

What does it look like?

Photos by Whitney Cranshaw, Colorado State University,

Where is it?

The cannabis aphid has been reported recently in two Oregon locations (Portland and Estacada), but they are not yet considered established in the state. Cannabis aphids have been reported in several other states (Colorado, California, Virginia, Kentucky, etc.) as well as parts of Canada.

Where did it come from?

The cannabis aphid is native to Asia.

What should you do?

Early detection and quick action is our best defense. Report a suspected cannabis aphid sighting to the OSU Plant Clinic. The OSU Insect ID Clinic also provides free insect identification.

OSU Plant Clinic
Department of Botany & Plant Pathology

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