While I stopped using them myself at home because fresh doses of pesticide are the problem.....
I don't know that it's a bigger problem if the nurseries use systemics in order to get a nice plant to us. Pesticides do not last forever, they may last 30 days at most (especially if it rains, will break down quicker), so by the time you have your plant in the ground and then blooming, it's probably gone/broken down. I've actually never worried about that, or had an issue in the past. My thought was always- I do not want to buy a plant that is infested with bugs, so there's got to be a moderate solution along the way.
But I agree with Deb, if you're not comfortable with it, vote with your wallet. I think it's good that plants need to be marked as being treated, which gives us a choice.
