How to control cabbage maggots in your vegetable garden
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How to control cabbage maggots in your vegetable garden

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Published by Oregon State University Extension Service in Corvallis, Or .
Written in English


  • Cruciferae -- Diseases and pests -- Control.,
  • Cabbage maggot -- Control.

Book details:

Edition Notes

Statement[prepared by R.S. Bekey and Ben Simko].
SeriesFS / Oregon State University Extension Service -- 286., Fact sheet (Oregon State University. Extension Service) -- 286.
ContributionsSimko, B. C., Oregon State University. Extension Service.
The Physical Object
Pagination[2] p. :
ID Numbers
Open LibraryOL16090132M

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After attack by cabbage maggots carefully remove the soil from around the roots of affected seedlings and mix ashes with it before placing it back around the plants. This technique will kill the maggots in about a week. Soil drench: place 2 pounds of lime in a 5 gallon can, fill with water and let stand for 24 hours. Sticky traps in the garden are effective at trapping cabbage flies. They are available at most nurseries. Check with your nursery about using nematodes as a biological control for root maggots. Another biological control are wasps, so leave them alone.   Best Ways to Prevent Cabbage Worms Create a barrier, such as a floating row cover. Cabbage worm eggs are laid on your plants by a moth. If your plants are covered by this floating row cover, they cannot lay their eggs on them.   The maggots pupate in the soil surrounding the root system and emerge into flies within weeks. Severe cabbage maggot feeding injury to the roots cause yellowing, stunting even plant death. Control of cabbage maggot on Brassica crops primarily involves the use of soil applied organophosphate insecticides such as chlorpyrifos and diazinon.

  Cabbage maggot description Cabbage maggots are the larval stage of the cabbage fly (Delia radicum).Also known as cabbage root flies, root flies, or turnip flies, this dark grey fly is half the size of your average house s are white, legless, and only 1/3 of an inch long, with a pointed head and a blunt behind.   The only effective control of cabbage root maggots is really cabbage root fly control. When you control the cabbage root fly, you will prevent the maggot from getting into your garden in the first place. Cabbage root fly control is best done with placing row covers over plants during the spring.   Protecting plants with netting is a reliable way to prevent cabbage root maggots from destroying your crop Mulch during the growing season to encourage grub-hungry beetles. Try spreading a layer of wood ash or diatomaceous earth around the stems to deter the flies from laying their eggs. Management-biological control. Rove beetles prey on maggot eggs and young larvae. Rove larvae parasitize the pupa stage of the maggot. The parasitic wasp Trybliographa rapae lays its eggs in the maggot larvae if the larvae are close enough to the soil surface. Biological controls cannot be counted on to provide adequate control.

You do not have access to any existing collections. You may create a new collection.   Monitoring for cabbage maggot is a worthwhile task if you grow any quantity of crucifers and it is not a difficult activity. After transplanting in the garden, place a yellow sticky card at plant height. Use 1 card per 25sq ft. Check weekly for the arrival of flies, identified by folded wings, the grey body and stripes on thorax and abdomen. BTK is the easiest way to get rid of cabbage worms in your garden. This natural bacteria upsets the caterpillars' digestive system causing it to die. Spray on your plants following the directions on the bottle (I do every weeks). Remember to reapply after it rains. Cool, moist soil conditions favor survival of the eggs, and soil temperatures that exceed 95°F in the top inches will kill them. Larvae feed on roots and pupate in the soil. A late summer flight (late August, early September) may damage fall root crops. There are generations per year in central New England.