Amblyseius andersoni Slow-Release Prevention Sachets

Andersoni is throwing a temper tantrum

They're refusing to work, so we're not shipping them. We don't know when the sachets will be back in stock.

First, make sure a sachet is what you want

Sachets are prevention, not treatment. Mites breed inside the sachet and trickle out over three to five weeks, keeping numbers down before a problem starts. They are deliberately slow.

If you already have webbing, stippling or visible damage, a sachet will not save the plant. You need loose mites from a bottle for that — start with Persimilis or the Spider Mite Rapid Response, then hang sachets afterwards to hold the line.

In the meantime — prevention sachets that do the same job

No single sachet we sell does exactly what this one did. Andersoni's advantage was the temperature range — it kept working in a cool room where most predators slow down. Here's what covers the same pests, with the trade-offs named.

Neoseiulus Californicus Slow-Release Prevention Sachets — not nearly so finicky

• Happy to hang in just about any room you put them in, as long as there's a spider mite to head off.

• Spider mites, broad mites and cyclamen mites, and the best tolerance for dry air of anything we carry.

• Where they differ from Andersoni: thrips aren't their thing. Pair with cucumeris if thrips are also on the list.

Special Blend Slow-Release Prevention Sachets — if you're covering more than spider mites

• Californicus, swirskii and cucumeris developing in one sachet, releasing over three to five weeks.

• Covers spider mites, broad mites, cyclamen mites, thrips larvae and whitefly immatures — the same covers-a-bit-of-everything role Andersoni played, spread across three species instead of one.

• This is what we'd hang on a mixed collection, or when you're not sure what's coming.

Amblydromalus limonicus Slow-Release Prevention Sachets — for a cool, less humid room

• Stays active in a cooler house, which is the part of Andersoni people miss most.

• They're after thrips and whitefly rather than spider mites — a substitute for the climate, not for the pest list.

Amblyseius Swirskii Slow-Release Prevention Sachets — for a warm, humid room

• Thrips larvae and whitefly eggs, at their best above 68°F with decent humidity. The opposite end of the range from limonicus.

Everything else about sachets is unchanged

Same hanging rules, same replacement rhythm: near foliage, above the watering line, don't open them, and swap every three to five weeks while the season is active. The sachet guide still applies to all of the above.

Not sure which one? Reach out to our bug pros at fgmnnursery.com/order-support. Tell them what the plant looks like and what the room runs at, and they'll pick for you.

Existing orders are unaffected, and the live delivery guarantee still covers anything already delivered.