Viewing post #3198179 by Lucy68

You are viewing a single post made by Lucy68 in the thread called Triple Action Neem Oil in an Ortho Dial n Spray.
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Dec 8, 2024 5:08 PM CST
California Central Valley (Zone 8b)
Region: California
I think what Catpaworchids means is Neem isn't a contact poison, it kills by smothering, not by dissolving insect exoskeletons. But dead is dead.

Personally, maybe because of my climate (hot and dry), Neem is a dangerous chemical to use on orchids. I use it on baby veggie plants the night before I plant them out. No insects to kill but by the time the aphids and whiteflies start showing up, the systemic part is in full swing.

I would not use any insecticide as much as Catpaworchids uses Neem on his orchids. Even as non-toxic as Neem is, used in that quantity and for that many years, ... its building up. In your environment and in your body.

But maybe this is why you continue to have insect problems, even though all your growing is done on light shelves indoors:

https://extension.unh.edu/blog....
Neem oil can be used for certain insect and fungal disease issues. It kills insects by suffocation, covering their bodies with oil that blocks their breathing openings. It is most effective against immature insects. Mature adult insects aren't typically killed and may continue to feed and reproduce.

You really shouldn't have that many insect problems in a closed environment after all this time. Either you aren't killing them all or you may have created a miniature version of pesticide induced resurgence.

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