Trichogramma brassicae - Caterpillar & Moth Control - Cole/Cold Crops & Ornamentals


Case Count



Target Pests: 
Over 150 pest moth species. Including; Armyworms, Borers, Codling Moth, Cutworms, European Corn Borer, Fruit Worms, Leaf Worms, Leaf Rollers, Loopers and other species. 

Trichogramma are light yellow, tiny flying insects, 1/100 inch long.  Trichogramma pierce moth/caterpillar eggs and inject their own eggs inside preventing worms/caterpillars from hatching out and destroying crops. Begin releasing Trichogramma when you see moths, and every 7-10 days thereafter, until infestation is gone.
We offer 3 different species of Trichogramma.
Trichogramma brassicae: Ideal for control on cole/cold crops & ornamentals. (EI: European corn borer.)
Trichogramma platneri/minutem: Ideal for control on tall crops. High Flyers.
Trichogramma pretiosum: Ideal for control on short crops. Low Flyers.

Product Information:
Trichogramma are shipped on hanging cards.

Wait to release until Trichogramma have began to hatch. Keep cards out of direct sunlight, in a warm place, until you can see small dots (adult Trichogramma) moving around in the sealed bag. Complete instructions included.

Release Rates:
10,000 per 500 sq.ft.

40,000-200,000 per acre.

Release weekly for 2-6 weeks.

Strategic Considerations: 
The best time to release is early morning or evening when direct sunlight will not hit the cards. Avoid releasing on extremely hot, cold, rainy, or windy days.

Item Number:
TRICHOBRASSICAE-100K - 100,000 Eggs on Hanging Cards    




Sold Individually. This item does not qualify for our assisted freight program.

TRICHOBRASSICAE-100K - 100,000 Eggs on 30 Hanging Cards


TRICHOGRAMMA are tiny parasitoids known for their ability to parasitize eggs of various pest insects, particularly moth and butterfly eggs. No larger than the tip of a pencil and measuring only about 0.5-1.5mm in length, they are hard to see without magnification. In agricultural settings, researchers and farmers often use pheromone traps to monitor their presence. Although TRICHOGRAMMA can vary in color, they are generally yellow or light brown, with a slender elongated body, long thread-like antennae, and delicate iridescent wings. The entire life cycle is relatively short with rapid reproduction and development cycles. Adult females can lay dozens to hundreds of eggs inside hosts, hatching into larvae in about 1-5 days. The larvae will feed on the host as it progresses through development for approximately 5-7 days. When the larvae is fully developed it will pupate inside the host for about another 5-7 days and finally emerge as adults, ready to continue the cycle.

Our Trichogramma are shipped in the pupal stage and come conveniently attached to hanging cards. They are offered as individual species for targeted control in tall or cole/cold crops and as mixed species to cover a broader range of crop diversity. At the first sight of moths or caterpillars, hang the cards in one or multiple sites, even indoors for clothing moths!


Over 150 species of caterpillars, moths, web worms, fruit worms, loopers, & more.


1-2 insects per sq. ft.
50,000 to 100,000 per acre
Introduce weekly during moth flight.

It's important to note that these release rates serve as general guidelines and may vary based on the specific pest species, the crop or plant being treated, and level of infestation. Proper monitoring of the infestation and the subsequent effectiveness of the released beneficial insect population is crucial for determining the success of the biological control strategy.


Introduce at first sight of moths and caterpillars.
Introduce weekly during moth flight.
Introduce indoors or outdoors.

Eggs will hatch within 5 days when temperatures are at 70°F. To introduce, flip the ard over (egg side down) and cut with scissors. Do not try to tear. Then, thread the hole and tie to infested plant. You can also staple or wedge card in foliage, out of direct sunlight.


Do not store emerged adults for more than 4 hours. Store pupae at 39-46°F for no longer than 72 hours.


Proper identification of the pest species is important. Monitoring the crop closely and introducing beneficial insects early will help in control pest populations.

Pesticides, even wetting agents, and spreader-stickers may adversely affect beneficial insects' survival. Broad spectrum and systemic insecticides are toxic.