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Whitefly Parasite

Whitefly Parasite, Encarsia formosa

Control Greenhouse Whitefly with this non-biting parasitoid wasp.

Description Qty Price  
Encarsia formosa, Approx. 1,000 Whitefly Parasite
Encarsia formosa, Approx. 3,000 Whitefly Parasite
Encarsia formosa, Approx. 5,000 Whitefly Parasite
Encarsia formosa, 1,000 Weekly - Minimum of 3 Shipments Required
Encarsia formosa, 3,000 Weekly - Minimum of 3 Shipments Required

Description Instructions Shipping Info Technical

Greenhouse Whitefly Control with Encarsia formosa - Whitefly Parasite

Preferred food: Greenhouse Whitefly (Trialeurodes vaporariorum) and limited control of sweet potato whitefly (Bemisia tabaci).

Life cycle and shipment: Shipped on 3 strips (5 cards on each strip) that contain parasitized whitefly scale and more than 1,000 Encarsia eggs. Encarsia do well in humidity of 50-70% and temperatures between 64º – 84º F. Adults will emerge from the pupae over a period of 1-2 weeks. They are active for about 10 days. Encarsia formosa will kill approximately 125 whitefly per week by using them for food or parasitizing them. The next generation of wasp develops inside the whitefly scale and emerges after 20 days.


Release Encarsia at the first sign of whitefly by hanging individual cards on plant foliage. Release rates vary depending upon crop, infestation and season of the year.

For greenhouse tomatoes and peppers, 1 strip per 4 plants weekly for 8-10 weeks; cucumbers, one per 2 plants weekly for 8-10 weeks; poinsettias, two per each plant weekly for 8-12 weeks. For each acre release 3,000 Encarsia weekly, for 8-10 weeks.

For prevention: Use 500-1,000/15,000 sq. ft. weekly.

For low infestations: (less than 1 adult whitefly per 50-100 plants) release 1,000-2,000 / 5,000-10,000 sq. ft. for a minimum of 3 weeks or until control is achieved.

For higher infestations: Use 3,000 / 3,500 sq. ft. for a minimum of 3 weeks or until control is achieved. Weekly Ship Programs also available

Eggs are shipped on cards that can be hung directly on the plants. Release immediately upon receipt.

Can be used in conjunction with Green Lacewing, Delphastus catalinae and/or Eretmocerus eremicus.

Please allow up to 7 days to process order. Encarsia formosa are shipped Monday, Tuesday and Wednesday. Orders received after Wednesday at 9 AM MST will ship the following week.

Ships 2nd Day Only - Please select the 2nd Day shipping option during checkout.

whitefly parasite encarsia formosa eggs
Close-up of card with parasitized pupae which contain Encarsia formosa eggs.

whitefly parasites cards
Eggs are shipped on cards that can be hung directly on the plants.

Encarsia formosa: Adult females are black with a yellow abdomen, opalescent wings and measure approximately 0.6 mm. They lay 50-60 eggs inside the nymphs or pupae of the whitefly. The eggs develop in two weeks at optimum temperatures. The parasitized whitefly pupae will turn black or brown (Sweet Potato Whitefly). Adult Encarsia emerge in approximately 20 days.

Save with a Weekly Ship Program - Receive 1,000 or 3,000 Encarsia eggs every week for 3 to 12 weeks.

Environment: Outdoors, Crops, Orchards & Vineyards, Nursery, Greenhouse, Grow Room, Hydroponics, Aquaponics, Pond & Environment, Container Plants

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