Last Updated: July 30, 2018

Definition - What does Thrip mean?

Thrips are small winged insects. They start out as tiny pale worms that morph into dark winged adults. The pests feed on cannabis plants by using their razor-sharp mouths to pierce the plant’s leaves and suck out the sap.

Thrips leave behind sticky silver or white spots on the plant’s surface where their mouths made holes in the plant’s fibers. Growers might also notice dark spots on the plant’s leaves and stems, which is the insect’s fecal residue.

MaximumYield explains Thrip

Dark spots on cannabis leaves are the first discernible signs that a grower has to indicate that the marijuana plant has a thrip infestation. They are a very common pest on marijuana plants. The insects require high temperatures to thrive.

Thrips are not a serious threat to a cannabis crop but they should be promptly controlled when detected. Thrips rarely afflict marijuana plants grown outdoors, but they are common in grow rooms and greenhouses. The insects do not typically kill the cannabis plant, but they do cause it to look unsightly and the crop yield is usually significantly reduced.

Insecticidal soaps work well to control thrip infestations on marijuana plants. The grower should follow the directions on the insecticidal soap for application instructions and ratios.

When using insecticidal soap to control a thrip infestation, the grower should avoid getting the soap on the plant’s buds. Blue adhesive strips can also be hung around the grow room to control thrips. Neem oil also works to control thrips.

In addition to thrips, cannabis growers need to look out for spider mites, fungus gnats, whitefly, and aphids—all of which cause considerable more damage than thrips.

This definition was written in the context of Cannabis
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