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When (and Where) to Use Insecticide

If you’re starting to notice holes in your leaves, discoloration, and stunted growth, you might have an insect infestation. If left unchecked, severe infestations can reduce the quality of your harvest and spread plant diseases. To save your plants, insecticide can be applied to leaves, stems, and the surrounding soil, killing and deterring unwanted pests. Keep in mind that early-stage infestations are easier to manage. If left unchecked, pests reproduce rapidly, requiring stronger pesticides and making eradication more difficult.

Insect Control FAQs

Are insecticides safe for plants?

There are plenty of insecticides that are safe for direct use on plants, but be sure to read the bottle to make sure. Insect spray for human use is not the same as garden insect repellent, so be sure to choose the right product for the job.

Do garden insect repellents work against all bugs?

No, insecticides do not work against all bugs. Different insecticides target specific types of insects, so using the wrong insecticide may be ineffective. Try to identify the specific pest before choosing an insecticide and use targeted products to avoid harming beneficial insects (like bees).

How often should I reapply insecticides?

Insect repellants for your plants may need to be reapplied every 2-8 weeks. Insecticides that kill on contact may need reapplication every week or two, or whenever the bugs show up again. Insecticides that are absorbed by the plant offer long-lasting protection, and only need to be reapplied once every couple of months.