Phytoseiulus persimilis
Phytoseiulus persimilis, hailed as one of the most formidable predators revered by growers worldwide, rises as a fierce warrior, primed to vanquish web-spinning spider mite species with deadly precision. Considered a specialist predator of the notorious two-spotted spider mites, P. Persimilis displays incredible speed and tracking abilities, intensifying its search when spider mite webbing is present. Thanks to its ability to sense odors emitted by mite-infested plants, it launches stealthy assaults, piercing the mite’s body and swiftly consuming its internal fluids, resulting in an impressive number of spider mites eradicated daily, with an estimated range of 5 to 20 eggs or mites per day under optimal conditions. Thriving in temperatures between 68-86°F with a required relative humidity over 60%, P. Persimilis emerges as the most efficient predator of two-spotted spider mites. Diligently continuing its mission, this biocontrol agent boasts an impressive reproduction rate. The adult female can lay up to 60 eggs during her approximately 50-day lifespan when temperatures average 74°F, with eggs hatching 2 to 3 days after being laid. The total development time from egg to adult ranges from about 25 days at 59°F to 5 days at 86°F, with generation times of 7 to 17 days at common field and greenhouse temperatures, twice as fast as that of its prey.

Phytoseiulus persimilis
Phytoseiulus persimilis, the indefatigable biocontrol agent, defies rest with its continuous activity year-round in greenhouses, interior plantscapes, and regions with mild winter temperatures. Thanks to its lack of a diapause (resting) stage, Phytoseiulus persimilis can remain perpetually active if conditions permit, boasting multiple generations per year and making it one of the most heavily employed biocontrol products in the agricultural world.
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What Phytoseiulus persimilis prefer to kill:
Deploy the tireless dedication of Phytoseiulus persimilis as it relentlessly defends your crops from spider mite infestations with unyielding determination, safeguarding your crops with an unwavering presence throughout the seasons!
Some crops Phytoseiulus persimilis call home:
Phytoseiulus persimilis, has proven its worth in the crucible of California strawberry fields, standing tall against two-spotted spider mite infestations. As a testament to its remarkable effectiveness, California’s strawberry growers wholeheartedly rely on this relentless biocontrol agent. Beyond strawberries, it extends its protective prowess to vineyards, orchards, and thrives in diverse greenhouse crops such as tomatoes, cucumbers, ornamental plants, and cannabis. Versatile and invaluable, Phytoseiulus persimilis remains the go-to choice for growers seeking relentless defense against spider mite infestations.
Phytoseiulus persimilis‘s preferred environmental conditions:
- Phytoseiulus persimilis thrives in moderate to warm (not hot) temperatures, with an optimal range typically between 68°F to 86°F, making it highly effective in many agricultural environments.
- Phytoseiulus persimilis prefers moderate to high humidity levels, with an ideal range usually between 60% to 90% relative humidity, ensuring its optimal performance as a powerful predatory mite.
Can P. Persimilis be released by drone?
Yes, P. Persimilis is one of the natural enemies most frequently released by drone.
Our Articles That Mention P. Persimilis

Biocontrol: How strawberry growers are leading the way
A discussion with Lane Stoeckle, PCA based in California, on augmentative biocontrol in strawberry production, the use of drones to release predators over large areas, and the challenge of the industry to manage soilborne diseases.

How a California viticulturist uses biological control and cultural practices to combat pests
A discussion with David Gates of Ridge Vineyards on how pest pressure varies according to the location and variety of the vine, beneficial insects, and cultural practices.

How to control two-spotted spider mites in strawberry production
The two-spotted spider mite causes damage early in the season: special field scouting effort needs to be implemented from February in California.

Augmentative biocontrol, an efficient pest management solution
The technique of bolstering existing beneficial populations with mass-reared insects is referred to as augmentative biocontrol.