What I found even more depressing was the number of members in the forums here that regularly use the systematic pesticides and even brag there garden is clear of any yellow and black striped 'parsley worms'. They bragged their whole garden is well dosed with the pesticides. Took every single ounce of self control not to yell and rant at the stupidity. I was so depressed I didn't want to come back to the forums. CERTAINLY NOT going to be asking my best problem questions because every SINGLE answer in that section was "Oh just go grab poison X and spread it all over the garden, the plants take it up and pop no problems" Oh really...and you wonder why you have no butterflies and no bees and why you don't get good fertilization...gardeners are also a huge part of the problem.
And I don't agree that big box stores have no control over their supply.
If they had the WILL too then they could enforce it that they carry only plants free from the poisons. But so far they only care that the plants look perfect for the customer...and frankly thats because the customer demands it so if we the customer start demanding non-poisoned plants I think they will start to change.