Phytoseiulus persimilis – Aggressive Predator for Two-Spotted Spider Mites

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Management number 250625519 Release Date 2026/09/17 List Price US$11.98 Model Number 250625519
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The fastest knockdown there is for a confirmed two-spotted spider mite outbreak

When two-spotted spider mites explode and webbing is spreading, you need speed, not patience. Phytoseiulus persimilis is the most aggressive spider mite predator available, racing through colonies and clearing heavy infestations faster than any other beneficial mite. It is a specialist: it lives to eat spider mites and will not survive once the prey is gone, so it is the tool for an active outbreak rather than long-term prevention.

Fastest spider mite knockdown Specialist predator for outbreaks Ships live, overnight Tuesdays

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.

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A durable generalist vs. a specialist knockdown predator
Miticide rescue
  • Miticides lose punch as mites develop resistance
  • Sprays miss the underside webbing where mites live
  • Chemical rescue leaves residue to manage
  • Slow to fully clear a heavy bloom
  • Kills your other beneficials in the crossfire
  • Repeat sprays needed as mites rebound
Phytoseiulus persimilis
  • Pests cannot resist an aggressive predator eating them
  • Persimilis hunts straight into the colony and webbing
  • No residue and no re-entry interval
  • The fastest biological knockdown for two-spotted mites
  • Selective predator that spares other biocontrols
  • Clears the outbreak, then you switch to a durable predator to hold
Why persimilis is the outbreak specialist

Built for two-spotted spider mites Fastest knockdown

Persimilis is the go-to when you have confirmed a heavy two-spotted spider mite outbreak, clearing dense colonies faster than any other predatory mite.

Aggressive appetite

It consumes spider mite eggs, larvae, and adults at a high rate, which is what lets it turn around a bloom that is already out of control.

A rescue tool, not a resident

Because it feeds only on spider mites, it dies out once the prey is gone. Use it to break an outbreak, then follow with a durable predator for prevention.

Works into the webbing

The predator moves through the fine webbing where two-spotted mites shelter, reaching the colony that sprays struggle to penetrate.

Pairs with californicus

A common program is persimilis for the fast knockdown followed by Neoseiulus californicus to keep a standing patrol afterward.

Simple to apply

Dust the carrier straight onto the infested foliage. No mixing and no sprayer, just shake it where the webbing is worst.

Pest species it targets
Two-spotted spider mite (all stages) Other Tetranychus spider mites
Where it works best
Temperature
55-81°F (13-27°C); stops above 86°F
Humidity
Needs above 70% RH
Diet
Feeds only on spider mites
Timing
Curative on active outbreaks
Application instructions
1

Turn and gently shake the bottle, then sprinkle onto leaves and webbing at the hotspots.

2

Apply directly where mites and webbing are worst; typical rate 2-50 per m².

3

Repeat weekly once or twice until the outbreak breaks.

4

Follow with californicus for lasting prevention once the mites are cleared.

How persimilis breaks a spider mite outbreak

1

Confirm two-spotted mites

Persimilis is a specialist, so it is worth confirming you have two-spotted spider mites and webbing before you release.

2

Dust it onto the hot spots

Shake the carrier directly onto the most heavily infested leaves and webbing so the predators land right on their prey.

3

Predators tear through the colony

Persimilis feeds aggressively on mite eggs, larvae, and adults, collapsing the population quickly.

4

Follow up to hold the line

Once the outbreak is cleared the predators die off, so plan a durable predator like californicus to prevent a rebound.

What you get and how to size it
What ships to you
  • Live Phytoseiulus persimilis in a vermiculite carrier
  • Count matched to your chosen size
  • Release and follow-up instructions
  • Insulated overnight packaging
Sizes and options
  • Release size: matched to outbreak severity and area
  • Use as: a curative rescue on active two-spotted mites
  • Follow with: Neoseiulus californicus for lasting prevention
Persimilis or californicus? Persimilis is your fast rescue for a confirmed heavy two-spotted outbreak. Californicus is the versatile predator for prevention and mixed mites. Many growers use both. Call us and we will map it out. Call or email us: 716-217-0353 / help@
Frequently asked questions
Persimilis is a specialist built for speed against two-spotted spider mites, but it dies out once the prey is gone. Californicus is the durable generalist that handles multiple mite types and survives on pollen between meals. Use persimilis to break an outbreak, then californicus to keep it from coming back.
They die off, because spider mites are their only food. That is expected and normal for this specialist. It is exactly why we recommend following a persimilis rescue with a durable predator so you keep a patrol on the plants long term.
No. For prevention or for mixed mite problems, californicus or andersoni is the better choice. Save persimilis for when you have an active, confirmed two-spotted spider mite bloom that you need to knock down fast. Not sure what you have? Call us first.
Live insects ship overnight on Tuesdays only, so they arrive Wednesday while still fresh. Place your order at least 7 days ahead so we can include you in the next weekly dispatch. We cannot ship live insects to HI, PR, VI, GU, AS, or PW. Open the package and release the same day it arrives.
If you receive a defective or damaged unit, email us a photo at help@ and we'll make it right immediately. For change-of-mind returns, we accept returns within 30 days for items in new, resalable condition. If you're not sure whether this product is right for your setup, call us first at 716-217-0353. We'd rather answer your questions before you order.
Happy Hydro has been selling growing equipment since 2006. We've carried Beneficial Insects for years because the biology works and customers who buy it leave happy. Have questions before you order? Call 716-217-0353 or email help@. We're easy to reach and happy to help!

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