Indeed, neem oil is widely used in agriculture. Unfortunately, for cannabis users, the studies about it have been done with plants which are not hyper/dynamic accumulators like cannabis is. The studies show how short of a time azadirachtin (the active ingredient in Neem oil/Neem seed meal) lasts when openly exposed to the elements.

Cannabis absorbs and holds onto elements and chemicals like many flowers do. This prevents the aza from breaking down and it's still in the cannabis at harvest time, months after treatment. When studies are done with aza and cannabis, they'll find this to be true as I have.

YES

Growing your own is one way to completely control what goes in/on your cannabis. It's been a year since I've had the opportunity and my wife and I both miss it. I don't have pest problems in flower, I take great care to grow clean and prevent infestations during flower. Nothing but cannabis in my flowers. :)lol OPB (Other People's Bud) just isn't anywhere close to as enjoyable. :)

Thanks for posting. :)