Nadine –
I am not certain if the cottonseed meal we offer is GMO-free and have forwarded your question to the mill to get an answer. I will post their response as soon as I hear something.
As for how cottonseed meal containing GMOs will effect your garden… The answer is: I don’t know. In the search for answers, I contacted a handful of experts who study horticulture at major universities and those that replied said pretty much the same thing. They couldn’t comment because they’re just wasn’t enough, or any, research. One of the more distinguished professors we asked hazarded a guess: that the act of decomposition would probably take care of any genetically manufactured plant material and would most likely break down any by product it produced. But he couldn’t say for sure.
https://www.planetnatural.com/product/cottonseed-meal-50-lb/
Hope this helps!