Ask a Question forum→Spider Mite Systemic?

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san francisoc
Dec 26, 2018 10:36 PM CST
Is there a Soil Drench Systemic miticide or insecticide that is effective treating spider mites?
Name: Will Creed
Prof. plant consultant & educator
Dec 27, 2018 2:55 PM CST
I am not a big fan of systemic pesticides because they introduce toxic substances into plant tissue throughout the plant. That is a hazard for toddlers and pets and potentially for adults if instructions are not followed carefully. Imidacloprid (sold under various brand names) is the most effective systemic pesticide, although there are non-pesticidal remedies that can be just as effective.

The presence of plant pests is often a symptom of other plant issues, such as improper light or watering. Plants that are under stress are much more attractive to plant pests. Thus, it is possible to successfully eradicate the pests but still lose the plant for other reasons. Another reason not to rely on quick pesticidal fixes.
Will Creed
Horticultural Help, NYC
Contact me directly at [email protected]
I now have a book available on indoor plant care
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Hummingbirder
Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator Plant Database Moderator
Dec 27, 2018 7:36 PM CST
The insecticide imidacloprid works on 6-legged pests but not the 8-legged kind (which include spider mites). Its effects are pretty specific to insects, which makes it pretty useless for mite control.

I have never had to deal with spider mites (they apparently hate our humidity) so I cannot make any positive recommendations.
[Last edited by Baja_Costero - Dec 27, 2018 7:37 PM (+)]
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Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Dec 28, 2018 5:54 AM CST
There have actually been reports of imidacloprid (a neonicotinoid) increasing spider mite problems (this applies to certain other insecticides too).

Perhaps this article on spider mites by Colorado State Extension will give sfdave some ideas:
Name: Sally
central Maryland
Seriously addicted to kettle chips.
Charter ATP Member Houseplants Keeper of Poultry Vegetable Grower Region: Maryland Composter
Native Plants and Wildflowers Organic Gardener Region: United States of America Cat Lover Birds Butterflies
Dec 28, 2018 5:57 PM CST
I don't buy or use pesticides regularly, but I buy Bayer Rose Care as in this link

and dose some tropicals with it and it seems to take care of mites. It does have fertilizer, so I try to only do this in summer on actively growing, outside plants that do not feed bees or butterflies..
i'm pretty OK today, how are you? ;^)
canada 4b (Zone 8a)
Dec 31, 2018 11:45 PM CST
sfdave said:Is there a Soil Drench Systemic miticide or insecticide that is effective treating spider mites?

MSU has a chart with this on it;

Spider Mites
 Foliar spray
Akari, Avid, Floramite, Hexygon, Judo, Kontos, Ovation, ProMite, Pylon, Sanmite,
Shuttle-O, Tetrasan, or Ultiflora

A lot of organic growers use neem oil and spinosad also.
[Last edited by Dirtmechanic - Dec 31, 2018 11:47 PM (+)]
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