Cannabis Pests and the Insects That Eat Them!

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1 Cannabis Pests and the Insects That Eat Them First Sign of Effective Predatory Insects Aphids wilted -looking plants that aren t thriving Pear shaped bodies, Tiny cornicles or dual exhaust pipes at the posterior end, may be many colors (green, yellow, brown, black), like temps of degrees Ladybugs, pirate, bigeyed bugs, leather wings, Syrphid flies, aphid predators, aphid parasites, lacewings, predatory thrips Broad Can cause curling leaf edges, and have a glossy wet look- similar to heat stress. Leaves may have yellow or bronze spotting sometimes also a symptom of mosaic viruses. Symptoms can be the same as Russet These are microscopic but can be seen with a microscope of at least 14x mag, they will move up the plant as they feed, so look slightly above where you see stress Same as Russet. Nymphs live inside plants and are hard to kill. Spider mite destroyer, minute pirate bug, predatory thrips, Neoseiulus cucumeris, Amblyseius swirskii Broad attached to a whitefly Caterpillars Holes chewed right out of leaves, Holes with brown trails around them, some species bore holes in stems Two sets of six eyes, body is covered in hairs, powerful jaws Parasitic wasps (lay eggs in caterpillar and kill the host), predatory stink bugs, minute pirate bugs, assassin bugs, Tachnid flies, lady bugs

2 First Sign of Effective Predatory Insects Cutworms Tops of seedlings look cut-off, older plants may be tilted over or wilting Cutworms are around one to two inches with soft bodies that are brown or gray in color. Some may have stripes or spots and have a tendency to curl into a C shape if you touch them Ground beetles, parasitic wasps, Tachnid flies Mealybug Distorted leaves, weakened plants Secrete honeydew which attracts ants and aphids, and lead to mold growth Ladybugs, Lacewings, Mealybug destroyers Russet Can cause curling leaf edges, and have a glossy wet look- similar to heat stress. Leaves may have yellow or bronze spotting sometimes also a symptom of mosaic viruses. Symptoms can be the same as Broad. These are microscopic but can be seen with a microscope of at least 14x mag, they will move up the plant as they feed, so look slightly above where you see stress Spider mite destroyer, minute pirate bug, predatory thrips, Neoseiulus cucumeris, Amblyseius swirskii

3 First Sign of Predatory Insects Spider tiny yellow dots on the surface of the leaves Usually appear as red/ yellow dots on underside of leaves Lacewings, Spider mite destroyer, minute pirate bug, predatory thrips, predatory Sciarid flies (fungus gnats) Causes damage to root area in larval stage Common when growing media is moist, or where light is not intense enough Assassin bug, fungus gnat predators Thrips small silver dots/stains on the surface of the leaves, which are the places where thrips have bit or laid their eggs. Needs high temps to appear, usually found on underside of leaves, Minute pirate bug, Neoseiulus cucumeri, Amblyseius swirskii Whiteflies Chlorosis and necrosis of the leaves Pure white, looks like small moth, usually lay about 200 eggs at a time on leaf surface. Like warm, moist weather Lacewings, Minute pirate bug, Assassin bug, predatory thrips, Amblyseius swirskii (attacks the larvae) Questions? Reach out to us for more information OAKLAND (510) HUMBOLDT COUNTY (707)

4 Predatory Insects and How to Attract Them Predatory Insect Photo Plants to Attract Predatory Insect Pests they feed on *CA native plants list: Lacewings Anise, Caraway, Coreopsis, Cosmos, Daisies, Goldenrod, Lace flower, Mint, Oregano, Sunflowers, Verbena, Yellow Coneflower A voracious group of predators (in the larval stage) feeding on small caterpillars, aphids, mealybugs, beetles, lace bugs, whiteflies, and assorted insect larvae. Praying Mantis Angelica, cosmos, yarrow, marigold, and Will eat various, insect eggs, raspberry canes, dill, caraway aphids, leafhoppers, mosquitoes, caterpillars and other insects when young. The adult mantis will eat larger pest insects. (they will also eat lacewings and other beneficial insects, so keep this in mind) Big Eyed Bugs Clover, Angelica, Buckwheat, Sunflower Feed on, insect eggs, small insects and larvae Ladybugs Anise, Boltonia, Boneset, Coriander, Cosmos, Daisies, Dill, Goldenrod, Coneflower Aphids, spider, beetles, moth larvae and more Robber Flies Highly diverse habitat Feeds on many different kinds of insects

5 Minute pirate bugs Alfalfa, Boneset, Goldenrod, Buckwheat, Coriander, Clover, Daisies, Goldenrod, Oregano, Verbena, Yarrow, Yellow Cone Flower Aphids, thrips, spider, broad/ russet, whiteflies, caterpillars Assassin Bugs Small flowers rich in nectar and pollen, dill Aphids, thrips, spider, broad/ russet, whiteflies, caterpillars Parasitic Wasps Angelica, Anise, Asters, Black-eyed Susan, Boneset, Buckwheat, Cilantro, Chamomile, Cosmos, Daisies, Erigonum, Goldenrod, Heliopsis, Lace flower, Meadowsweet, mint, Oregano, Verbena, Yellow Cone Flower Caterpillars, aphids Syrphid (Hoverflies) Angelica, Anise, Asters, Black-eyed Susan, Boneset, Buckwheat, Cilantro, Cosmos, Daisies, Erigonum, Goldenrod, Heliopsis, Lace flower, Meadowsweet, mint, Oregano, Verbena, Yellow Cone Flower Larvae will feed on soft-bodied insects such as aphids,, thrips, and scale insects, but adults will only eat pollen Spiders Highly diverse habitat Hunter spiders are the most ideal to have in your garden. Will eat aphids,, leafminers, caterpillars, thrips, cucumber beetles, flies and more Questions? Reach out to us for more information OAKLAND (510) HUMBOLDT COUNTY (707)

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