Quote:
Originally Posted by fonseca
I have read that neem is the least clogging of all horticultural oils, but clogging the stomata could be an issue with regular spraying. I don't spray more than twice a week, and ideally I spray something else in-between, like compost tea.
Also if you are using a premixed neem product, what else is in there? Chemical solvents to keep it in a liquid state at cooler temperatures? You can get a quart of cold-pressed neem for around $20, a 1 gallon pump sprayer for $10, and natural dish soap for a few bucks. A quart of neem oil lasts me years.
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That's about the price here as well (europe). I thought it would be cheaper in usa. I find it expensive.
With 1 liter of neem you make 20l of solution. If you have mites and need to spray often and a decent amount of plants (I don't, I only have some), 20l is not that much.