Trichogramma brassicae – Egg Parasitoid Wasp for Caterpillar & Borer Control
Product details
| Management number | 250625517 | Release Date | 2026/09/17 | List Price | US$18.78 | Model Number | 250625517 | ||
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Stop cabbage worms and corn borers before the eggs hatch
Cole crops and vegetable gardens draw a steady stream of egg-laying moths, and once the caterpillars hatch the damage is done. Trichogramma brassicae attacks earlier, parasitizing moth and butterfly eggs before they hatch. It is especially effective in cole crops and cool-climate plantings and targets over 200 species of moths and butterflies, including cabbage worms, loopers, borers, and armyworms. Release the cards weekly during moth flights.
Live insects ship on Tuesdays only and arrive Wednesday. Orders must be placed 7 days in advance. Anything ordered by 3pm EST Tuesday ships the following Tuesday by UPS overnight shipping.
- You react after caterpillars are chewing
- Big caterpillars shrug off many sprays
- Sprays coat crops and need harvest timing
- Broad products hit butterflies and beneficials
- One-time sprays leave gaps
- Labor-heavy and reactive
- Destroys the eggs before a caterpillar hatches
- The pest is stopped at its weakest stage
- No spray, no residue, no re-entry interval
- Wasps target moth and butterfly eggs, sparing the crop
- Weekly cards give continuous egg-stage coverage
- Hang a card and the wasps patrol for you
Kills pests before they hatch Egg-stage control
Female wasps lay inside pest moth eggs, and the developing wasp consumes the contents, so no caterpillar ever emerges to feed on your crop.
Covers 200+ species
Brassicae parasitizes the eggs of more than 200 moth and butterfly species, including cabbage worms, loopers, borers, fruitworms, hornworms, and armyworms.
Suited to cole crops
It is especially effective in cole crops and cool-climate plantings, making it a strong fit for vegetable gardens growing cabbage, broccoli, and their relatives.
Built for a weekly program
Because moths keep laying, the best results come from releasing cards weekly during the flight period so fresh wasps meet fresh eggs.
Wasps keep cycling
Adults emerge from the cards in days and search out more pest eggs, extending each release beyond the moment you hang it.
Low-effort to deploy
The cards clip onto plants with no mixing or equipment, so weekly prevention stays low-effort.
Hang or clip the cards in the canopy across the crop.
Release during moth activity; wasps emerge in 2-5 days (fastest at 80-90°F).
Typical rate 1-2 per sq ft, or 50,000-100,000 per acre weekly.
Release in the morning and don't delay once the wasps emerge.
How brassicae stops the next caterpillar
Hang the cards
Clip the release cards onto plants across your crop, spaced fairly evenly through the canopy.
Wasps emerge in days
Adult Trichogramma hatch from the parasitized eggs on the card and begin searching for pest eggs.
They parasitize pest eggs
Each female lays inside moth and butterfly eggs, which darken as the wasp develops instead of a caterpillar.
Repeat weekly
Because moths keep laying, hang fresh cards each week during the flight period to keep steady coverage.
- Trichogramma brassicae release cards with parasitized host eggs
- Count matched to your chosen size
- Hanging and weekly release instructions
- Insulated overnight packaging
- Card counts: sized to your crop area
- Program: weekly releases during moth activity
- Different strain needed? ask us about minutum or platneri for your region
Questions? We're easy to reach.
Happy Hydro has been serving growers since 2006. Call or email us before you order, after you order, or any time something comes up. When you're happy, we're happy.
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