P. persimilis now available as P. persimilis PLUS.
Ships via Overnight methods Monday-Thursday only. See Shipping Info for details or call us at 1-800-827-2847. These predatory mites are available for pick-up in our Oro Valley store.
Effective control of two spotted spider mites! Release Phytoseiulus persimilis at first sign of mite infestation. Once leaf damage is serious, more than 4 mites per leaf, achieving control is more difficult. For heavy infestations, remove the most affected plants and use a knock-down spray (see Neem Oil). Wait 48 hours after application of a knockdown spray to release predatory mites. P. persimilis are red in color relative to the pest mites they feed on and are best used to combat active mite populations. P. persimilis will leave the area in search of alternative food sources if pest levels drop too low.
P. persimilis consume egg, nymph and adult stages of pest mites. Light infestations can be controlled within 2-3 weeks. Repeat releases every 7-14 days until control is achieved. Call us at 1-800-827-2847 to set up a customized weekly or bi-weekly ship program.
Optimum Temperature and Humidity: 68-90°F (20-27°C) and 60-90% Relative Humidity
The above conditions are optimal and P. persimilis can be successful outside of those ranges; however, reproduction, development and activity levels can all be reduced. Increase humidity by moistening soil or use a cool-mist vaporizer around plants in enclosed areas.
Release Rates: Some crops, including tomatoes & other highly resinous crops, require higher release rates.
|Environment ||Release Rates|
|Tomatoes || Preventative: 1-3 P. persimilis per square foot. |
| Moderate Infestation/Speckling: 5+ per square foot.|
| Webbing/Outbreak: 10+ per square foot after using a knockdown spray and cleaning the growing area.|
|Greenhouse & Garden Crops || 2+ P. persimilis per square foot. Increase release quantity for moderate to severe infestations.|
|Outdoor Growers || 20,000-200,000 P. persimilis per acre depending on infestation level.|
| Please Note: Release rates vary depending upon crop, infestation level and season of the year.|
This Product Controls These Pests or Diseases: Spider Mite (Mult), Two-Spotted Spider Mite (Tetranychus urticae)
P. persimilis is a fast-feeding spider mite predator and should not be used to control broad, cyclamen or russet mites. Release instructions for P. persimilis are found below. If you are a first time user of beneficial insects or mite predators, please call us at 1-800-827-2847 to walk through application instructions and best practices.
Release immediately for best results. It is helpful to release P. persimilis in late evening on the day you receive them. Before releasing, gently rotate the jar to distribute the mites evenly within the carrier. Next, open the jar in the crop and begin to tap the contents out of the jar as evenly as possible onto the plant foliage. Concentrate releases on or near heavily infested plants. In trees, sprinkle them into Dixie-like cups wedged into, or distribution boxes hung from, the branches. Leave the bottle in the treatment area for 24 hours after release to ensure all P. persimilis have exited.
Due to its high reproduction rate, P. persimilis can exhaust its food supply and die out. Because of this, P. persimilis should be applied as an active control, not as a preventative measure. Repeated releases are recommended until all spider mite infestations have P. persimilis present. Since they are unable to sustain themselves without a mite population to feed on, look to N. fallacis for preventative applications as they can feed on pollen and small arthropods in the absence of mites.
Environment: Outdoors, Crops, Nursery, Greenhouse, Grow Room, Hydroponics, Aquaponics, Pond & Environment, Interiorscapes, Container Plants
Storage: If not releasing immediately, keep in a cool dark place out of direct sunlight. Use within 18 hours of receipt.
- Ships via Overnight methods Monday - Thursday.
- Online orders can take up to 48 hours to process.
- For any questions about shipping restrictions, please call us at 1-800-827-2847.
Cannot Be Shipped To: HI,PR,VI,GU,AS,PW
What's In The Package: P. persimilis mite predators are shipped as adults mixed with vermiculite. Release immediately for best results. They are packaged 2,000 mite predators per 4 oz. bottle (i.e. 10,000 ct. includes five 2,000 ct. bottles).
Warning & Toxicities: Do not release P. persimilis in areas where A. cucumeris are being used. A. cucumeris feed on spider mite eggs, limiting the food supply for immature Persimilis. See our Quick Pest Reference Guide for alternative predators suitable to your pest situation.
Shelf Life: Use within 18 hours of receipt.
Life Cycle: The complete P. persimilis life cycle varies based on temperature with higher temperatures accelerating the process and cooler temperatures slowing it down. At 86°F, maturity is reached after 5 days, while maturity is reached in as many as 25 days at 59°F. The sex ratio for P. persimilis is 4:1 female to male with females laying 2-3 eggs per day.
Eggs hatch in 2-3 days, but newly hatched juveniles do not feed. Later immature stages and adults feed on all stages of mites with each predator consuming 5-30 prey per day.
Write a review
Apr 6, 2022 | By RUDY SANTOS
Owner Response: In the event of compromised viability, please contact email@example.com to submit photos to use our Live Delivery Guarantee.
Great hot spot treatment
Mar 10, 2022 | By Stacey Stout
Phytoseiulus persimilis A.K.A Mite Assassins'
Mar 9, 2022 | By Richard Castello
Not sure they worked
Jan 11, 2021 | By Josh
Owner Response: Thank you for your feedback Josh. As you know, biological control may need to be applied multiple times for thorough control. If you would like additional suggestions, please call to work with one of our bio-control specialists. We'll work with you to find the right solution!
Nov 1, 2020 | By Stacy
Oct 28, 2020 | By Kris
Oct 25, 2020 | By Marty White
Love our bugs
Oct 6, 2020 | By Brenda Marshall
Owner Response: Great to hear Brenda. P persimilis are not commonly used for Russet Mites, but glad they have worked for you. Continue to monitor for future outbreaks.
Aug 8, 2020 | By Terri Chaffman
Jul 30, 2020 | By Emily
Jul 21, 2020 | By Linnea Good
Pimp my Garden
Jun 20, 2020 | By Ben Sizemore
Arrived mostly dead
May 22, 2020 | By James Rascon
Owner Response: We do guarantee live delivery, so if there are any issues with viability please call us or email a picture/video to firstname.lastname@example.org. If needed, we will reship or refund you.
May 7, 2020 | By Marty White
Fan of your products!
Apr 27, 2020 | By Holly
Mar 28, 2020 | By Bret Mattox
Feb 22, 2020 | By Jared
Green House Spider Mites
Jan 24, 2020 | By Anthony
Jan 22, 2020 | By Vance
Free of mites in a week
Dec 11, 2019 | By Noah Luecke
Spider Mite Annihilators
Sep 6, 2019 | By Donna Everett
Jul 21, 2019 | By Manny
Jul 17, 2019 | By Greg Marciel
Fast service, excellent results
Jun 29, 2019 | By Elizabeth
Got rid of mites
Jun 6, 2019 | By Lillian Wallace
Apr 26, 2019 | By Jason Yeakey
Apr 3, 2019 | By Mike Schum
Mar 5, 2019 | By Tricia
Not sure what happened.
Feb 24, 2019 | By Jerome Brown
Owner Response: Hi Jerome,
Sometimes Persimilis cluster in transit, so leaving them at room temperature for 15 minutes prior to checking can be helpful. You can check areas where you released them with a loupe for activity. Persimilis are easily distinguished from spider mites by their quicker movement and different color. If you ever have questions about viability, please call us at 1-800-827-2847.
They handle thinhs proper
Feb 6, 2019 | By Fred Freeland
Owner Response: Thanks for getting in touch with us quickly! We've definitely got stuff for whitefly control when you need it!
Dec 23, 2018 | By Duane
Dec 13, 2018 | By Richard Moore
Predator mites (persimilis)
Dec 11, 2018 | By Frank
Owner Response: Thank you for the inputs, Frank! We'll work to get more storage information on the label.
Phytoseiulus Persimilis works!!
Nov 25, 2018 | By E.T.
Spider mites control
Oct 23, 2018 | By Annie
Saved my flowers.
Sep 26, 2018 | By Michael Ziegler
Aug 19, 2018 | By Michael Scherer
Aug 16, 2018 | By Richard
Jul 23, 2018 | By Irving Banks
Apr 5, 2018 | By Jay
Feb 10, 2018 | By Jeremy
Feb 9, 2018 | By Ashlee
Spider mites destroyed!!!
Feb 3, 2018 | By Jarad Trevey
Jan 28, 2014 | By Organic Gardener