Request a FREE ARBICO Organics Catalog   more details » Bookmark and Share
ARBICO Organics
  Shopping Cart: 0 items $0.00
Ask Dr. Buglady Fly Eliminator

Sign up for Specials

Japanese Beetle Control

Natural Solutions to Control Japanese Beetles
Japanese Beetle Adult
Japanese Beetle, Popillia japonica
Learn how you can control them with these organic solutions.

These common pests feed on over 275 plant species including deciduous fruit trees, vegetables, grasses, and ornamentals.

Many gardeners and homeowners consider the Japanese Beetle to be one of the most serious pests they face. These pests cause devastating root damage in their grub phase but also attract various burrowing animals that dig up your lawn searching for the grubs to eat. The adult beetles defoliate plants rapidly.

Japanese Beetle Life Cycle
Photo Credit: UNL Entomology Department.

Japanese beetle grubs overwinter 8-10 inches (20-25 cm) deep in the soil. As spring arrives and temperatures increase, the grubs move up in the soil to feed on plant roots. They pupate in late May to June and adults start emerging in late June to mid-July. Adults live from 30 to 45 days and feed through late summer or early fall with females constantly laying eggs.

Control Japanese Beetles with a comprehensive plan of attack:

  1. Treat with a combination of Milky Spore and NemaSeek Beneficial Nematodes in either the spring or the fall. The nematodes help to distribute the Milky Spore. This combination of organisms also works synergistically to most effectively control the grubs. In warm climates you will achieve excellent long-term control after applying Milky Spore once per year for 3 years. In colder climates it may take up to 5 years to achieve long term control.

  2. Apply quality humus and essential soil additives to improve overall soil health and bioacivity. John & Bob's Soil Prep Kit is an excellent choice along with Nitron Humic Acid. Grubs don't attack healthy roots.

  3. Use a neem oil product like Monterey 70% Neem Oil to control adults that elude your traps and also to discourage them from feeding.

  4. Treat again with NemaSeek beneficial nematodes six months after your first application to further distribute the Milky Spore and to eliminate newly developing grubs.

Click on the products below for more info and ordering.

Japanese Beetle Map
***You may have a different kind of beetle if you don't live in the areas above.***
Japanese beetle damage
Japanese Beetle damage.

Identifying Japanese Beetles:

  • Adult Japanese beetles are 3/8-1/2 inch (8-10 mm) long, metallic green to greenish bronze with coppery red wings and small white tufts on the sides and tip of the abdomen.

  • Larvae are "C"-shaped, cream-colored white grubs with brown heads that reach 3/4 - 1 inch (20-25 mm) long when mature.

Japanese beetle grub
Japanese Beetle grub.
Sort by
NemaSeek™ Beneficial Nematodes
Seeks Out Stationary Pests including Grubs, root zone weevils, citrus weevils, Japanese beetles, black vine weevils, ticks, queen ants/termites and more. Great for gardens, lawns, fields, pastures and orchards.

Free Shipping in the contiguous 48 United States!
» read more
» View Options
Milky Spore Powder
OMRI Listed. Control Japanese beetle grubs with this easy-to-use biological.

» read more
» View Options
All Purpose Dispenser Tube
Dispenser holds up to 40 oz. of powdered material or fertilizer.

» read more
Chameleon Adaptable Hose End Sprayer
Great for applying beneficial nematodes, liquid fertilizers, insecticides, or herbicides.

» read more
On Sale: $12.75
BONIDE<sup>®</sup> Neem Oil Concentrate - 1 Pint
Multi-purpose concentrate works as a fungicide, insecticide and miticide.

» read more
Monterey 70% Neem Oil Concentrate - 1 Pint
OMRI LISTED. Neem Oil Concentrate That is Effective Against Pest Insects and Fungal Diseases.

» read more
Safer<sup>®</sup> Brand BioNEEM® Insecticide and Repellent - 16 oz. Concentrate
OMRI LISTED. This organic insecticide eliminates pests on contact.

» read more
On Sale: $16.00
John & Bob's Soil Optimize
OMRI LISTED. Rejuvenates the soil to facilitate healthy plant growth.

» read more
» View Options

» read more
Beneficial Nematodes
» read more