Now that the frenzy of May plant-buying is behind us, I always wonder just how many of those beautiful Mother’s Day baskets and pots full of flowers are actually still alive. Or once the thrill of the purchase is gone, how many have at least been neglected to the point of near death? You see, no matter how healthy and beautiful a plant looks when it leaves the garden center, in order to keep it looking that way, it needs to be fed…