Someone who would enter the collective I worked for and try to offer me their product. That to me is commercial. If you are growing for personal use (yourself and your family) that is different. When one grows for others they take less caution in using less research in the products they use on their garden and less precautions.
For example, in my garden you won't find eagle 20, riptide, avid, or any of that crap. You won't see me trying to cut out mold from my buds to make weight or doing any shady tactics that have been used in the industry. One that never gets past me is when people rehydrate their buds, you can use a shower or humidipaks but I can tell if the bud went from dry as fuck to wet as fuck real easy.
I have asthma and so I like clean safe medicine, that is what most commercial growers are not. I have too many horror stories about what is offered to go on the market. Even if my collective rejected it the one down the street may not.
im high as fuck btw so hope that makes sense [edited in]