4 Simple Ways To Control Aphids Naturally Water Spray. Cabbage aphids, Brevicoryne brassicae, Linnaeus colony (or cluster) on a cabbage stem. Hope this list has helped you to learn a few ways you can control the cabbage worm. False cabbage aphid This aphid is greenish rather than grey and lacks the waxy coating of the true cabbage aphid. 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. Cabbage Aphids. Like other aphids, cabbage aphids have long antenna and pear shaped bodies. Aphids are extremely frail, and a steady blast of water quickly knocks them off of plants. They can infest everything from ornamental shrubs and fruit trees to various vegetable crops.In terms of veggies, they seem favor the brassica family including kale, collard greens, broccoli, brussels sprouts, cauliflower, and cabbage. Aphids will feed on a wide variety of plants, and are especially drawn to tender new growth. Because it does not cause the leaves to roll back, it is easier to control. Cabbage Looper. Garlic Spray can also help to control aphids, leaf hoppers, cabbage loopers, earwigs, squash bugs and whiteflies. Some aphids are darker colors, like brown. Destroy old stalks of cabbage as soon as the crop is harvested to help prevent destructive outbreaks of these aphids. Cabbage Maggots 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 … 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. Cabbage aphids are light green with a waxy, grayish coating. 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. However, mealy cabbage aphid does not fly up in a white cloud when disturbed. It is often found on the lower leaves before spreading all over the plant. For successful chemical control of cabbage aphid, treatment must begin early, before infestations become severe. Photograph by Lyle Buss, University of Florida, Entomology and Nematology Department. Cabbage aphids prefer young plant tissue—they are often found in growing tips and in Brussels sprout buds. Monitoring & Thresholds. Fecal matter on cabbage leaf and a cabbage worm. The potato aphid is a common brown aphid. Frogs like to eat aphids as well as a number of other pest insects such as squash bugs, cabbage worms, and cabbage loopers. 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. What plants are aphids attracted to? 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. The leaves may wrinkle, curl, or cup, and cabbage heads may be stunted. For large size cabbages, spray down into crevices between outside large leaves and the cabbage head. Scout weekly, starting before harvested portions of the crop begin to develop. You’ll find cabbage aphids on the undersides of leaves where they suck the sap from your cabbage. Believe it or not, one of the easiest ways to quickly control aphids is to simply spray plants with a powerful stream of water. 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