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Clear Away Cabbage Maggot Flies

Fight the Flies. Eliminate the Larvae.


If you notice damage on your seedlings, stunted growth of a mature plant, or wilted leaves with a blue tint in color, you may be dealing with cabbage maggot flies or their underground larvae. The quarter-inch long, cream colored larvae are usually discovered in the roots after the plants have been harvested, so the best way to control cabbage maggot larvae is to fight the flies and prevent them from laying eggs at the base of your plants.


Protect your broccoli, cauliflower, cabbage, brussel sprouts, carrots, beets, radishes, rutabagas, and turnips with the PreGro Plant Sprayer. This lightweight garden sprayer will help you target those pesky cabbage maggot flies, which look very similar to the common housefly.


Cost-effective solutions can be easily mixed at home and quickly poured into the easy-to-fill glass container. To target cabbage maggot flies specifically, consider using neem oil in your solution. Non-toxic to people and animals, this natural ingredient is safe to use on home-grown vegetables and leaves no dangerous residue in your soil.

You Will Need:

  • 1 teaspoon neem oil
  • 1 quart of warm water
  • 1/2 teaspoon liquid dish soap *make sure there is no bleach in the dish soap
  • Quart or gallon-sized pitcher
  • Stirring utensil
  • PreGro Plant Sprayer

DIY Recipe to Control Cabbage Maggot Flies



Combine neem oil with warm water in pitcher and give it a quick stir. Then add 1 tablespoon of non-bleach liquid dish soap to the liquid. Pour this solution into the easy-to-fill glass container. Never shake the PreGro Plant Sprayer when the glass container is attached to the sprayer. The PreGro Plant Sprayer utilizes aerosol technology, but does not contain CFCs. For optimal spray, hold sprayer between a 90 degree angle and a 45 degree angle. Spray the neem oil at the base of the plant within 45 minutes of mixing the solution. The neem oil should work its way through a plant’s vascular system and will be introduced to the pests during feeding. Natural compounds within the neem oil should cause the pests to stop feeding, interfere with mating, and prevent the larvae from maturing. Use the neem oil once a week to control these pests.


Important Tips:

  • Solution is not effective for plants that are weakened by drought or overwatering.
  • Test your homemade solution on a single plant to make sure the solution is not too strong and will not have adverse effects.
  • Spray this natural solution on your affected plants in the early morning or evening so a hot or sunny day will not cause the solution to heat up and burn the plant material.

The PreGro Plant Sprayer

Atomizes up to 18 oz., which covers up to 120 square feet.

Easy to control, this portable hand-held garden sprayer enables you to deliver a continuous and uniform spray to only those plants most affected by unwanted pests.