Metallic green-copper adult grows to 1/2" long. Larvae or grubs are grayish white with brown head; fat body is 3/4" long. Adults especially like beans and corn but will eat almost any plant, often skeletonizing the leaves. Larvae chew on roots of lawn grass, bean, beet, sweet corn, onion and tomato plants; their root pruning severely reduces crop yields and can kill grass. Growth of grubs and root damage is mostly in June. Adults cause damage from late June to early September.
To protect lawn grass roots from chewing damage by grubs, apply Grub-Away® Nematodes at the rate of 10 million per 600 sq. ft. of lawn. Lawn- Gard™ Bioinsecticide kills grubs and other lawn insects; won't wash out with repeated rainfall. For adult beetles, use kaolin clay as soon as adult beetles are noticed. Continue spraying every 7-14 days during the growing season; increase interval to 14-21 days as plant growth slows. Reapply after heavy rains. Otherwise, apply pyrethrins to kill them (note: you can mix kaolin clay with pyrethrins if pest pressure is heavy); or use Japanese Beetle Trap with pheromone lures to mass trap them. Set out traps in mid June, before beetles emerge, preferably in sunny locations. We recommend Surround® At Home® Crop Protectant and Pyola® Insect Spray.
Surround at Home® Broad Spectrum Sun & Insect Crop Protectant
Like a coat of armor for your plants, Surround® At Home® is a broad-spectrum protectant that forms a barrier to control aphids, Japanese beetles, leafhoppers, crickets, thrips, grasshoppers, whiteflies, cutworms, weevils and loopers....Read More
Pyola® Vegetable, Fruit & Ornamental Insect Spray
Pyola® Insect Spray is easy to use, fast acting, and can be used up to and including day of harvest on most plant types. This fast and effective solution eliminates a wide range of insect pests from aphids and ants to larvae, beetles and...Read More
beetleJUS!® Beetle Control for Ornamentals and Vegetables
If beetles are becoming a nuisance, put beetleJUS! ® to work. beetleJUS! controls foliage-damaging adult beetles, larvae, caterpillars and weevils with the active ingredient Bt, a soil-dwelling bacterium that occurs naturally...Read More