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Onion - Home Use Insecticides


Insecticides registered for HOME use on Onions in Utah, organized by Mode of Action (MoA).

Active Ingredient Brand Name MoA Residual (days) Thrips Maggots Leafminers Spider Mites
malathion Bonide Malathion, Hi Yield, Ortho Max Malathion 1B 5 See label See label See label See label
gamma-cyhalothrin Spectracide Triazicide 3 14 X X X  
pyrethrin GardenTech Worry FreeB 3 5 X X X  
sulfur and pyrethrin Bayer NatriaB 3/M2 5 X X X X
acetamiprid Ortho Fruit and Vegetable 4A 14 X   X  
spinosad Bonide Captain Jack'sB 5 7-10 X   X  
insecticidal soap Safer'sB, Natural GuardB , Bayer NatriaB --- 7 See label See label See label See label
neem oil plus pyrethrin FertiLome Triple ActionB --- 3 X   X X
oils: neem, canola, rosemary, clove, and cottonseed Green LightB, Bayer Natria Multi InsectB, Monterey Neem OilB, Monterey All Natural Mite and InsectB, Natural Guard NeemB --- 1       X

Note: The information provided is not an endorsement or recommendation for any particular product. Always read the label before applying and follow the directions. Some of these materials may be tank mixed with other herbicides.


B= Biopesticide