We always plant pots for the front & rear decks. I worked on the back yard deck, and began to observe "failure" with double impatiens, new guiniea impatiens & ivy geranium. The potting soil I had bought at kmart seemed old & heavy. My brother rejected it for the pots he did in the front... his grew lush while mine languised. some actually withering.. I went and bought new potting soild & discovered they had fewer roots then when I had potted them! Could the soil have turned "bad" somehow, or highly acidic or alkaline? I am hoping I repotted them in time to save them.