Alternatively, try mixing a few drops of mild soap with some water and wipe this mixture onto infested plants using a rag or paper towel. The cabbage aphid is of agricultural concern because it is a vector of at least 20 viral pathogens that can cause diseases in crucifers and citrus. Some aphids are darker colors, like brown. What plants are aphids attracted to? Other symptoms to look out for include: Dense colonies of greyish-white aphids, up to 2.5 mm long, clustered on the underside of leaves and on the growing points; The leaves develop a whitish-yellow discolouration where the aphids … Because it does not cause the leaves to roll back, it is easier to control. For successful chemical control of cabbage aphid, treatment must begin early, before infestations become severe. Cabbage aphids are light green with a waxy, grayish coating. Cabbage Maggots Photograph by Lyle Buss, University of Florida, Entomology and Nematology Department. It is also more likely to be prevalent in the warmer months. Beneficial Insects To The Rescue! The cabbage looper (Trichoplusia ni) is a very destructive and difficult-to-control pest of cabbage and other cole crops. Cabbage aphids, Brevicoryne brassicae, Linnaeus colony (or cluster) on a cabbage stem. You’ll find cabbage aphids on the undersides of leaves where they suck the sap from your cabbage. It is often found on the lower leaves before spreading all over the plant. Scout weekly, starting before harvested portions of the crop begin to develop. Cabbage aphids prefer young plant tissue—they are often found in growing tips and in Brussels sprout buds. The leaves may wrinkle, curl, or cup, and cabbage heads may be stunted. Aphids are extremely frail, and a steady blast of water quickly knocks them off of plants. For large size cabbages, spray down into crevices between outside large leaves and the cabbage head. One of the most popular ways to eliminate aphids from an environmental standpoint is to make sure their natural predators are widespread in your garden. Cabbage Looper. Monitoring & Thresholds. 4 Simple Ways To Control Aphids Naturally Water Spray. False cabbage aphid This aphid is greenish rather than grey and lacks the waxy coating of the true cabbage aphid. However, mealy cabbage aphid does not fly up in a white cloud when disturbed. Believe it or not, one of the easiest ways to quickly control aphids is to simply spray plants with a powerful stream of water. Like other aphids, cabbage aphids have long antenna and pear shaped bodies. While aphids in general feed on a wide variety of plants, different species of aphids can be specific to certain plants. The potato aphid is a common brown aphid. Garlic Spray can also help to control aphids, leaf hoppers, cabbage loopers, earwigs, squash bugs and whiteflies. Destroy old stalks of cabbage as soon as the crop is harvested to help prevent destructive outbreaks of these aphids. For example, some species include bean aphids, cabbage aphids, potato aphids, green peach aphids, melon aphids, and woolly apple aphids. To control aphids, try sprinkling a fine layer of flour onto the affected plants, which will constipate and kill the aphids without harming other insects. Cabbage aphids have many natural enemies and these can sometimes control low populations; however, short crop life, use of pesticides for other pests, the tendency for the aphids to be deep within the head, and various other factors make it difficult for natural enemies to keep rapidly rising aphid populations from reaching economic levels. Frogs like to eat aphids as well as a number of other pest insects such as squash bugs, cabbage worms, and cabbage loopers. 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