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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.
Horticultural Help, NYC
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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.
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:
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;
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.
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