Neem Oil: How late to possibly use in harvest?

Greetings. About 2-3 weeks from harvest; maybe a lil more. Is it too late to use neem oil, one last time, as sort of a final preventative measure? Noticing a few moths flying around....as well as some possible spider mite signs. All very minor. Once again, pretty close to harvest. Got hit with caterpillars last crop, so I’m sort of nervous/anxious. Just wondering your thoughts. Buds and resin glads looking way nice and not noticing any mold. Please and thanks.

You shouldnt use neem after week 2 of flower.

lilbry said:

Greetings. About 1-2 weeks away from starting to harvest; 3 at max. Is it too late to use neem oil, one last time, as sort of a final preventative measure? Noticing a few moths flying around....as well as some possible spider mite signs. All very minor. Once again, pretty close to harvest. Got hit with caterpillars last crop, so I’m sort of nervous/anxious. Just wondering your thoughts. Buds and resin glads looking way nice and not noticing any mold. Please and thanks.

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I've got hammered by bud worms in the past too. In my experience, neem will stop caterpillars but only after they have already eaten a good chunk of material. Its not a great method for stopping them.

Spinosad or BT will help stop the caterpillars. I use Captain Jack's Spinosad and would recommend you spray now. It should keep off all damage from catepillars. It says to use 2 weeks before harvest but it seems to work for 3+ weeks. It looks to me like your plants have a little longer than 3 weeks. I would spray now and it should keep the damage away until you harvest. I've never used BT so not sure how effective it is.