Skip to product information
1 of 4

GrowersHouse Encarsia formosa/Eretmocerus eremicus - Beneficial Insects - Control - Whitefly

GrowersHouse Encarsia formosa/Eretmocerus eremicus - Beneficial Insects - Control - Whitefly

Brand: Growershouse BCA

Regular price $43.23 USD
Regular price Sale price $43.23 USD
Sale Sold out

Encarsia formosa/Eretmocerus eremicus


Encarsia formosa and Eretmocerus eremicus are tiny parasitic wasps that are mainly parasitic to whiteflies. They can be easily released in the field for the control of whiteflies indoors or outdoors. Eretmocerus eremicus act as both an external and internal parasite whereas Encarsia formosa act as the only internal parasite. Best known for their ability to control Tobacco whitefly (Bemesia tabaci) along with Greenhouse whitefly (Trialeurodes vapariorum).

Application Rate Recommendations for Encarsia formosa/Eretmocerus eremicus:

  • Preventative: 1-2 per square foot weekly
  • Moderate Infestation: 2-4 per square foot weekly
  • Heavy Infestation: 4-8 per square foot weekly

How-To Use Encarsia formosa/Eretmocerus eremicus For Best Results:

  • Release these wasps as soon as you see whiteflies in your garden or greenhouse.
  • You should also release them in the evening when temperatures are cooler.
  • The wasps should be released at the base of plants where whiteflies are present.
  • It is important to note that these wasps are sensitive to pesticides so avoid using them when releasing these wasps
  • Store for a maximum of 2 days at 42-50 °F (6-10 °C). 

Features & Benefits:

  • Encarsia formosa and Eretmocerus eremicus are natural predators that do not harm plants or humans.
  • They are effective against whiteflies.
  • They can be used indoors or outdoors.
  • They are easy to release in the field.

Features & Benefits:

  • Parasitoid wasps that lay eggs inside whiteflies, underneath whitefly nymphs and, when larvae emerge, they feed on the whiteflies from the inside out
  • Host feed on whitefly nymphs
  • Hang on plants
  • Keep out of direct sunlight

  • Available Sizes: Card and blister pack

    Registered for Use In: USA

    Item Numbers:

    BW-EM5 - 50x100/card 5K 50/50 mix

    BW-EM75BP - 250 * 30 Blisters 7.5K 50/50 mix

    BW-EM10 - 100x100/card 10K 50/50 mix

    BW-EM15 - 150x100/card 15K 50/50 mix

    BW-EM15KBP - 250 * 60 Blisters 15K 5

    Shipping & Returns

    Because we ship live insects and want them to arrive to you as freshly as possible, we only ship Monday through Wednesday. This means your shipment will arrive Tuesday through Thursday, possibly Friday if there are any unforeseen delays such as bad weather. Since FedEx does not ship over the weekend, we do not want insects to sit in a fulfillment center where they have a greater chance of not arriving to your garden fresh-as-can-be.

    Free Consulting

    Have our beneficial predatory insect specialists help you pick the best solution for your garden or cultivation operation. Fill out this form.

    View full details