Leafhoppers
These pests can number in the hundreds in an outdoor grow if left alone. You will not see leaf holes like chewing. They puncture the leaf and suck out the sap causing white spots and eventually yellowing/dying of the leaf in addition to other symptoms listed below.
Adult Leafhopper:
Description:
Many species of leafhoppers exist in home gardens throughout North America. Both adults and nymphs feed by puncturing the undersides of leaves and sucking out plant juices. Their toxic saliva causes spotting (white specks), yellowing, leaf curling, stunting and distortion of plants. They are also responsible for transmitting the organisms causing virus diseases in plants. Common host plants include beans, lettuce, beets, potato, grapes, roses and many others.
Leafhopper adults (1/4 inch long) are slender, wedge-shaped insects that fly or disperse rapidly when disturbed. Depending on species they may be green, brown or yellow in color and often have colorful markings. Nymphs do not have wings and are generally lighter in color than adults. Both adults and nymphs run sideways and are good jumpers.
The picture below is a Leafhopper nymph. It was so small that it looked like a small piece of dirt on the leaf. I could not tell what it was until I used a magnifyer on it.
Leafhopper Nymph:
Note: There are more leafhopper species worldwide than all species of birds, mammals, reptiles and amphibians combined.
Green Immigrant Leaf Weevil or Pale Green Weevil
Species: Polydrusus formosus
or Polydrusus impressifrons
These two species are very similar, the important thing is that they can be pests to Cannabis plants and root systems.
Reported to feed on leaves, and the larvae feed on roots. Mostly reported to feed on birch tree leaves or other trees, but do target linear plants. The pictures are of one on my Cannabis plants. He was feeding.
These pests can number in the hundreds in an outdoor grow if left alone. You will not see leaf holes like chewing. They puncture the leaf and suck out the sap causing white spots and eventually yellowing/dying of the leaf in addition to other symptoms listed below.
Adult Leafhopper:
Description:
Many species of leafhoppers exist in home gardens throughout North America. Both adults and nymphs feed by puncturing the undersides of leaves and sucking out plant juices. Their toxic saliva causes spotting (white specks), yellowing, leaf curling, stunting and distortion of plants. They are also responsible for transmitting the organisms causing virus diseases in plants. Common host plants include beans, lettuce, beets, potato, grapes, roses and many others.
Leafhopper adults (1/4 inch long) are slender, wedge-shaped insects that fly or disperse rapidly when disturbed. Depending on species they may be green, brown or yellow in color and often have colorful markings. Nymphs do not have wings and are generally lighter in color than adults. Both adults and nymphs run sideways and are good jumpers.
The picture below is a Leafhopper nymph. It was so small that it looked like a small piece of dirt on the leaf. I could not tell what it was until I used a magnifyer on it.
Leafhopper Nymph:
Note: There are more leafhopper species worldwide than all species of birds, mammals, reptiles and amphibians combined.
Green Immigrant Leaf Weevil or Pale Green Weevil
Species: Polydrusus formosus
or Polydrusus impressifrons
These two species are very similar, the important thing is that they can be pests to Cannabis plants and root systems.
Reported to feed on leaves, and the larvae feed on roots. Mostly reported to feed on birch tree leaves or other trees, but do target linear plants. The pictures are of one on my Cannabis plants. He was feeding.
