We are to be prudent with our bodies and our money and we are to care about what effects our actions have on others. Whether fortunate or not, habitually buying things that are deemed “organic” by the USDA does not automatically fit that bill.
For instance, there is no necessary connection between “free-range”, “cage free”, and “organic” eggs. Those are legal terms that mean different things. Furthermore, cattle raised in a situation where there is too much grazing land to certify it all may fail to be deemed “organic”, while cows that eat organic corn in feedlots can be deemed “organic”. That doesn’t mean the non-organic grass-fed beef is not better for you and raised more humanely than the corn-fed organic beef.
The same goes with “processed” foods. For instance, there is nothing inherently immoral with eating foodstuffs made from grain that has had the germ removed. An excess of it can be bad, but that doesn’t mean that white flour is forbidden in the diet of a moral person. Besides that, white flour can be organic, while whole wheat may not be. A crop such as tomatoes or bell peppers may have a great difference in environmental impact depending on whether it is organic or not and fresh or not, whereas with onions and melons, there may not be much of a difference. (
acefitness.org/acefit/healthy-living-article/60/1310/should-i-eat-organic-when-does-it-really/)
Of course, then there is the issue of fair working conditions for farm laborers, which is another thing altogether, not to mention the distances special foods have to be transported compared to “less angelic” locally-processed foods. It can get to be enough to drive one to distraction, trying to figure it all out. We don’t have to do that.
If you know something violates moral law, don’t buy it. If you can’t know, don’t obsess about it. For the things in-between, do what you can but don’t think you’ll ever truly “keep kosher” when it comes to this question. It is not currently possible, and it is certainly not within the means of everyone. We would do wrong if we implied that it was a moral imperative.