When your grow environment is unpredictable and pests are gaining ground, you need an immediate biological response. Unlike slow-release systems that take time to establish, Amblyseius andersoni bottles deliver a high concentration of active adults ready to hunt on contact.
Unlike specialized predators that require "perfect" conditions, Andersoni is the "all-terrain" solution. These mites remain active in temperature swings ranging from 42°F to 100°F, making them the premier choice for greenhouses, outdoor orchards, and indoor grow tents with fluctuating humidity.
Choosing Your Predator: When to Use Andersoni vs. Others
Not all predatory mites are the same. Choosing the right one depends on your environment and the severity of the infestation.
| Predator | Use Andersoni When... | Use Others When... |
| vs. Persimilis | Your humidity is low/variable or you have multiple pest types. | You have a severe Two-Spotted Spider Mite outbreak in high humidity (>60% RH). |
| vs. Californicus | Temperatures are cooler (down to 42°F) or you need to target Broad/Russet mites. | You have high heat and lower pest pressure; both are great "preventatives." |
| vs. Swirskii | You are dealing specifically with mite complexes in cooler or transitional seasons. | Your main issue is Whitefly or Thrips in very warm, tropical conditions. |
The Andersoni Advantage: Use this when you have "chaos"—fluctuating temps, unknown mite species, or a mix of Spider, Broad, and Eriophyid mites.
Why Choose Amblyseius Andersoni Bottles?
Most biological controls require a buildup phase. Our bottled Andersoni arrive as 100% active adults, providing:
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Instant Knockdown: No waiting for colonies to establish; they hunt on contact.
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Climate Resilience: Thrives in variable RH and extreme temperature shifts (42°F–100°F).
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Versatile Prey Range: While a powerhouse for spider mite control, Andersoni also targets difficult microscopic pests like broad mites, russet mites, and cyclamen mites.
Targeted Pest Control Matrix
Andersoni is a generalist predator, making it the perfect "safety net" for mixed infestations.
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Spider Mites: High efficacy against T. urticae and T. pacificus.
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Broad & Russet Mites: Excellent suppression; essential for hemp and ornamentals.
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Eriophyid Mites: One of the few predators capable of hunting gall mites in orchards.
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Thrips (Larvae): Will provide supplemental suppression by feeding on young larvae.
Application & Dosage Instructions
For the best results in your Integrated Pest Management (IPM) program, follow these application guidelines:
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Preparation: Gently rotate the bottle to ensure mites are evenly distributed in the carrier material.
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Release: Sprinkle the contents directly onto foliage, focusing on undersides of leaves and known pest "hot spots."
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Environment: Avoid overhead watering or pesticide applications for 24–48 hours post-release.
Recommended Rates:
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Light Infestation: 10 mites per sq. ft.
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Moderate to Heavy: 15–25 mites per sq. ft.
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High-Value Crops: Blanket coverage across the entire canopy.
The Professional Grower’s Advantage
Pro Tip: Use Andersoni bottles for an immediate "clean out" of active pests, then follow up with Andersoni sachets for long-term, slow-release protection. This "knockdown and maintain" strategy is the gold standard for commercial growers.
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100% Organic & Safe: Non-toxic to humans, pets, and pollinators.
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Zero Residue: Perfect for late-stage flowering or edible crops.
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Live Delivery Guarantee: Ships overnight to ensure maximum vitality upon arrival.
FAQ
How does the Live Guarantee work?
We know how important it is for your mites to arrive healthy and ready to work. That’s why we offer a live arrival guarantee—with flexible options depending on when we hear from you:
- Let us know within 24 hours of delivery: We’ll gladly send a free replacement shipment.
- Let us know within 2–3 days of delivery: We can offer store credit to make things right.
- After 3 days from delivery: Because these are living organisms, we’re not able to offer replacements or credit beyond that window. By then, it’s harder to know what went wrong or whether shipping conditions were a factor.
We truly want your mites to succeed—so please open your package as soon as it arrives and check on them. If something doesn’t look right, don’t wait—reach out and we’ll take care of you.
Where are you located?
We have a number of different locations in NJ, Maine and Oregon. While we'd love to have you, we are not currently open to the public.
Can I call you?
We get it. Sometimes it's easier to talk to someone, and on a case by case basis we can try to figure it out. Unfortunately though, we're really not able to take calls—FGMN is a small nursery, and we're usually elbows-deep in plants or packing boxes. To make sure nothing gets missed (and everyone gets a timely reply), we keep all communication in writing.
Feel free to message us at info@fgmnnursery.com. We mostly respond quickly, but every once in awhile replies may take a day. Do follow-up if you don't hear in that time. We're human, we miss an email here or there.
Too Many Options?
We get it. Try our mite/insect matchmaking quiz and instantly get matched to the solutions you may need.
Our Live Delivery Guarantee
We stand behind every leaf and every mite. If your plant or predatory insects don’t arrive alive on the first delivery attempt, we’ll make it right.
Here’s what you need to know:
- Email us at info@fgmnnursery.com within 24 hours of delivery
- Include clear photos of the item and the shipping label
- Someone must be available to receive the package—plants and bugs don’t do well sitting in the sun, a mailbox, or the back of a delivery truck
For plants, we offer store credit if something goes wrong.
For predatory mites and beneficial insects, you’ll have the choice of a replacement shipment or store credit.
If you contact us after the 24-hour window, we may still be able to help—just know it’s handled case by case.
We pack with care, insulate when needed, and check the weather before shipping. But once it’s in transit, the fastest way to protect your order is to open it right away.
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