To keep New Guinea impatiens from wilting in hot weather, place shallow saucers under 8 and 10 inch plastic containers. Water the plants daily with enough water to fill the saucer to overflowing. During the day the roots will take an extra drink as needed, and the saucer will be dry by nightfall. (Don’t try this on other plants-they’d die from root rot.)
Each time you feed impatiens, select the two longest shoots on opposite sides of the plant. Cut off two-thirds of their length. The plants will remain full, well branched and bushy. When an impatiens wilts from too much heat, sun, or dryness, don’t despair. Plunge the entire container up to the stems of the plant in a bucket of water. Come back in half an hour; the plant will have recovered.