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    Aphids

    Overview Plants are facing constant threats from pests and pathogens. Nearly half of the one million known insect...

    Bean Leaf Beetle

    Bean leaf beetles (Cerotoma trifurcata) range in size from 1/5 to 1/4 of an inch and may be red, tan, green, tan,...

    Brown Stink Bug

    Brown stink bugs (Euschistus servus) are members of the Pentatominae family of true bugs (order Heteroptera). Of the 180 species in this family...

    Buffalo Treehopper

    Treehoppers suck plant juices. This feeding damage is slight, although the honeydew produced by treehoppers supports the growth of sooty mold, which...

    California Red Scale

    California Red Scale (Aonidiella aurantii), also called red scale, red-orange scale, and Cochinilla Roja Australiana, is a major pest of citrus which...

    Chinch Bug

    Chinch bugs suck juices from stems and crowns, causing yellowing or dead patches of turf. Two closely related species are important pests...

    Companion Planting

    Companions are plants that have compatible growth habits and share space well; allies are plants that enhance growth and ward off insects.

    Garden Webworm

    The garden webworm (Achyra rantalis) attacks a wide range of crops including strawberries, legumes, corn, cabbage, spinach, cucumbers, and beets. They also...

    Pest & Disease Control

    Black Spots on Leaves Not surprisingly, the disease, black spot (Diplocarpon rosae) produces black spots on the leaves of infected...

    Symphyla

    Symphylas, also called garden symphylans and garden centipedes, are not insects, but members of the class Symphyla. Species of this class are...

    Tarnished Plant Bug

    The tarnished plant bug (Lygus linalaris) is a true bug (order Hemiptera), with the crossed wings and piercing-sucking mouthparts characteristic of this...

    Thrips

    The thrips (order Thysanoptera) are tiny insects, generally no more than 1 mm long, distributed worldwide. The order consists of over 5,000...