In most places in order to qualify as "organic" they're only allowed to use a certain subset of pesticides (generally ones derived from natural sources such as bugs or other plants). They aren't pesticide free, and there's no requirement on the quantities of pesticides used, only the kinds of pesticide. There's also no requirements around fertilizer used as far as I'm aware. Like most of the health buzzword fads, organic doesn't really mean what most people think it means, and in truth what it means is highly variable depending on who's using the term.