Kraft tube of FGMN Amblydromalus limonicus predatory mites, labelled for thrips and whitefly.

Amblydromalus limonicus

$90per bottle

Two pests in one room feels like a lot. One predator covers both.

Thrips larvae and whitefly in the same humid room? Limonicus hunts both at once.

1Size. How many plants?

2How often?

More than one release is normal: plan on every 2 to 4 weeks while thrips or whitefly are active.

3Add to cart.

Pairs well with
Orius insidiosus

Limonicus takes larvae on the leaves; Orius takes the flying adults

Up to 5 Plants ·$68

Buying for a group or a business? · Wholesale

01 · The problem

Is limonicus right for your thrips?

Signs it's thrips and whitefly

  • Silvery streaks on the leaves, flecked with tiny black specks
  • Sticky leaves and a puff of tiny white flies when you brush the plant
  • Both at once, on the same plants, in a humid room

Seeing these? Good catch. The sooner you start, the smaller the job.

You receive
Live mites of all ages, with food mites, in a carrier
Main target
Thrips larvae, plus whitefly eggs and young nymphs
Best conditions
55–86°F, 70% humidity and up
Not for
Dry rooms, broad or russet mites, webbed spider mites

Works on

  • Thrips larvae, first and second stage
  • Whitefly eggs & young nymphs
  • Spider & cyclamen mites, on encounter
  • Pollen, between meals

Not the answer for

  • Adult thrips or whitefly
  • Broad mites
  • Russet & rust mites
  • Webbed spider mite colonies
  • Dry rooms

02 · Meet the beneficial

Amblydromalus limonicus

Limonicus at work
Fig. 1 · Limonicus at work

Hired for spider mites in the 1960s. Turned out better at thrips.

In the 1960s, fruit growers first noticed it eating spider mites on their trees. Its talent for thrips was discovered later.

  1. Likes it a little cooler

    It does its best work in a somewhat cooler room than swirskii, another thrips-eating mite, so the two cover each other's gaps.

  2. Among the hungriest tested

    Put to work on thrips side by side, limonicus and swirskii ate the most and laid the most eggs of all the pest-eating mites tried.

03 · How it works

Living hunters, working on their own

  • Easy to start. Open, release, done. Nothing to mix or spray.
  • They search for you. Most pests are too small to spot. Predators find them anyway, so you don't need to know where every one is hiding.
  • They stay where the food is. For the most part they settle where the pests are and keep working.
  • Another round is normal. Living things work in waves. You'll see the results as fewer pests on the plant.

Limonicus temperature and storage

55–86°FWorks from about 55 to 86°F, so it gets going earlier in spring than swirskii.
70% humidity and upThe one that matters most: eggs hatch best there. In dry air it still eats but won't build a population.
Release the day it arrivesLoose mites do best on the plant, not in the bottle. Best not refrigerated.
Sprays first, then mitesNeem and horticultural oil: once dry. Insecticidal soap: one day. Sulfur: 21 days. For anything else, see our spray-wait table.

05 · The plan

How to release limonicus

No experience needed. Here's all it takes.

  1. Open it the day it arrives

    Open it the day it arrives

    Turn the bottle gently so the mites mix evenly through the carrier.

  2. Looks like just carrier

    Looks like just carrier

    The mites are smaller than a pinhead and the color of the carrier, so a still bottle is normal. Fewer pests and clean new growth tell you they're working.

  3. Raise the humidity

    Raise the humidity

    Give the canopy a humid few days. This mite leans on humidity more than most.

  4. Dust over new growth

    Dust over new growth

    Shake it thinly over plant tops and flower sites, or into paper cups hung on stems to keep carrier off flowers.

  5. Repeat every 2 to 4 weeks

    Repeat every 2 to 4 weeks

    Every 2 to 4 weeks while pests are active. Then hang limonicus prevention sachets to keep the plants clean.

06 · What happens next

What to expect

Living things work at their own pace. Here's what normal looks like.

  1. Our strongest thrips predator

    Top of seven species ranked on one protocol, and it takes second-stage larvae that other mites leave behind.

  2. Whitefly is where it pulls ahead

    In one greenhouse comparison it cut whitefly 99%, against swirskii's 88%.

  3. New growth comes in clean

    Old silvering is scar tissue and stays. Judge it by new leaves and fewer whitefly week on week.

  4. Spider mites on encounter

    It takes the spider mites it meets. A webbed colony is a job for persimilis.

  5. You may see the carrier move

    Limonicus is unusually active. If the bottle looks still, that alone isn't a reason to worry.

How many do I need?

How many limonicus to buy

Sizes go by plant count. Find your space below; each card points to the size that covers it.

A few high-value plantsUp to 5 plants
A shelf of plantsUp to 10 plants
A collectionUp to 25 plants
A greenhouseUp to 100 plants

Before you order

All your questions, answered

Something else? Toby's in the chat, bottom right, and happy to help.

When does it ship, and how does it arrive?

Live predatory mites, sent Monday to Thursday by 2-day or overnight, whichever suits them best. We ship when they're ready to travel, and pack extra on top of what you paid for. Free shipping from $30; $15 under that.

What if something's wrong when it arrives?

If there's a problem when your order arrives, email info@fgmnnursery.com with your order number within 72 hours of delivery. You choose a replacement or store credit.

Why is limonicus more expensive than swirskii?

It's much harder to rear, needing specific diets and conditions. What the premium buys is one mite that covers thrips and whitefly together in a humid room.

Can I use it on roses?

Yes. Limonicus has been studied in roses for whitefly, and it feeds on the thrips larvae that mark petals.

How do I keep carrier out of my flowers?

Pour small piles into paper cups or coffee filters hung on the stems. The mites crawl out onto the plant and leave the carrier behind in the cup.

Does it bite?

No. It's strictly a predator of small insects and mites, and harmless to people and pets.

Ready when you are

Amblydromalus limonicus

You've got this. And if you get stuck, we're one email away at info@fgmnnursery.com.