Natural Insecticides For Earworm
AzaMax will control this pest insect
AzaMax is a natural product with a broad spectrum of pest control and broad plant applications. AzaMax is an anti-feedant and insect growth regulator which control (kills) pests through starvation and growth disruption within two or three days. Therefore this product is used when the bugger is chomping on the foliage. Any of the sprayers can be used to apply AzaMax
For more information about AzaMax go to the Yardener's Tool Shed; click here
Light Horticultural Oil - Light horticultural oil, having a viscosity of 60 to 70 controls corn earworm during the growing season. Spray a 2 to 3% solution of oil in water directly on the earworm. The oil works by suffocation. If you add Bt to this light oil spray you increase its effectiveness significantly (see above).
Pyrethrum - Pyrethrum, a botanical poison, paralyzes corn earworm on contact. So spray the undersides of the leaves as well as the tops, since the worm is usually on the underside and must be sprayed directly. Usually two applications, three to four days apart will control the problem.
Rotenone - Rotenone is both a stomach and a contact poison to corn earworm. Dust it or dilute it with water for spraying. A 5% concentration in water will kill earworms. It can be used up to 24 hours before harvest. However, while it is effective against many pests, rotenone also kills beneficial insects.