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Battle the Beetles

Protect Your Plants.


There are ‘good’ bugs that prey upon pests in your garden and there are ‘bad’ bugs that do damage to your flowers, fruits and vegetables. When you spot a shiny body and wings, try to determine if the beetle in your garden is a helpful bug or a harmful pest. While there are a total of 68 beetle species that have been identified in North America, there are five specific beetles that you do not want to discover in your garden (reference the chart below).


If you are dealing with a bad beetle that is chewing holes in your leaves, defoliating your plants or ruining your vegetable crop, grab your PreGro Plant Sprayer. Use this lightweight garden sprayer to remove these pests from your garden. The PreGro Plant Sprayer utilizes an easy-to-fill glass container, which gives you the option to use any organic insecticide or natural pesticide you choose. Quickly mix up a cost-effective solution at home using organic, all-natural recipes.

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 Battle Beetles



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 beetles during feeding. Natural compounds within the neem oil should cause the beetles to stop feeding, interfere with mating, and prevent the larvae from maturing. Use the neem oil once a week to control pesky beetles.


Important Tips:

  • Test your homemade solution on a single plant to make sure the pesticide is not too strong and will not have adverse effects.
  • Spray this natural insecticide 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.


Beetle Identification

Japanese beetle metallic blue/green; bronze wing covers skeletonize leaves & defoliate vegetables, flowers, & small fruit
Mexican bean beetle oval, yellow/brown; black spotted wing covers defoliates lima beans, snap beans, and soybeans
Flea beetles oval, dark; jump like fleas small, round holes chewed in leaves of young vegetable plants
Tarnished plant bug mottled green or brown; black & yellow forewings stunts flowers, fruits and vegetables; wilts/distorts leaves and fruit
Colorado potato beetle yellow/orange; black striped wing covers Defoliates/kills potatoes, tomatoes, eggplant, petunias

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.