Encarsia formosa

Whitefly Parasite

Control Greenhouse Whitefly with this non-biting parasitoid wasp.
Shipping is FREE. Ships via 2nd Day Air on Monday, Tuesday, or Wednesdays.
  • 1,000
    SKU: 1132001
  • $36.00
  • 3,000
    SKU: 1132002
  • $55.90
  • 5,000
    SKU: 1132003
  • $70.00
  • 1,000 Weekly - Min 3 Shipments Required
    SKU: 1132011
  • $103.50
  • 3,000 Weekly - Min 3 Shipments Required
    SKU: 1132031
  • $154.90
  • Description
  • Instructions
  • Shipping Info
  • Technical

Encarsia Formosa prefer to eat Greenhouse Whitefly (Trialeurodes vaporariorum) and they provide limited control of sweet potato whitefly (Bemisia tabaci).

Life cycle and shipment: Eggs are shipped on cards that can be hung directly on the plants. Release immediately upon receipt. 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.

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

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

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

Free Shipping in the contiguous 48 states. Ships via 2nd Day Only on Monday, Tuesday and Wednesday.

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

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.


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