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Past Articles Library | Organic Pest Control | Cabbbage Looper




 

CABBAGE LOOPER

Cabbage Looper, Trichoplusia, adults are gray moths with silvery V-shaped spot in the middle of each forewing with a wingspan of 1-1/2 to 2 inches. They fly at night so most people rarely notice them. Larvae are green "inchworms" with a pair of white lines down their backs and one line along each side. Eggs are light green and dome shaped.

 
 

LIFE CYCLE

In May the moths emerge from overwintering pupae and lay their eggs on the upper surface of leaves. The larvae feed for 2-4 weeks, then pupate for 10 days in thin silk cocoons attached to stems or leaves. There are three to four generations per year in most areas.

 
 

PLANTS MOST AFFECTED

Primarily cabbage and related plants; alos beet, celery, lettuce, pea, spinach, and tomato; flowers include carnation, and nasturtium.

 
 

DAMAGE

Larvae chew holes in leaves; whole plants may be ruined or destroyed in severe infestations.

 
 

MEANS OF CONTROL

Handpick the larvae several times weekly. Spray with BT (Bacillus thuringiensis) to control caterpillars. Spray severe infestations with garlic oil, pyrethrin, ryania, or sabadilla.



 








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