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Neem oil works slower than other commercial and chemical pesticides. This can give rise to the idea that it isn’t working. It can take up to 2 weeks to see results, as the pests slowly fade away and the next generation of pests doesn’t appear. In the meantime, you should see some improvement. Many pest infestations can be dealt with over the course of 5-7 days.
Pesticidal effects of neem oil
The pesticidal effects of neem oil work in several ways:
1. Toxic to those that eat a treated plant. A treated plant absorbs the oils. It becomes part of the plant’s vascular system. Once consumed, the oils can deter pests from further eating, preventing larvae from maturing, and interrupting mating patterns.
2. Oil covers breathing holes. Neem oil can cover the breathing passages of certain pests, which will then kill them.
3. Smell acts as a deterrent. The smell of neem oil can discourage pests from approaching your plants.
4. It can interfere with an insect’s hormones. It can be harder, once the neem oil has been consumed, for pests to lay eggs. This prevents the next generation of pests from being born.
Neem oil works slower than other commercial and chemical pesticides. This can give rise to the idea that it isn’t working. It can take up to 2 weeks to see results, as the pests slowly fade away and the next generation of pests doesn’t appear. In the meantime, you should see some improvement. Many pest infestations can be dealt with over the course of 5-7 days.