John Heider · Gardenality Genius · Zone 9B · 25° to 30° F · Comment About Pruning
I prune my impatiens when they no longer look compact are getting leggy and falling over. I prune them back at least half way to the ground. Try and cut just above a node on the stem as this is where the new growth will sprout from. Don't worry if you feel you have trimmed to much. They will recover quickly and look beautifull blooming again in a few weeks. I have cut back my plants 3 times this summer and still have solid flowers in October.

Brent Wilson · Gardenality Administrator · Zone 8A · 10° to 15° F · Comment About Planting
I plant Super Elfin Impatiens in shady sites. Morning sun is the most I will let them get. Whether in flower beds or containers, I always plant them in fertile, well-drained but moist soil. In containers I usually use a blend of 75% professional potting mix and 25% cheaper grade bagged potting soil. In flower beds I always plant them in "raised" or "mounded" beds consisting of a 50/50 blend of the native soil and potting soil. Between seasons I always refurbish flowerbeds by turning in a light layer of organic soil amendment such as mushroom compost or a composted manure product.

John Heider · Gardenality Genius · Zone 9B · 25° to 30° F · Comment About Feeding
After planting, allow your plants to become established for two weeks before attempting to feed them. If your soil has plenty of organic matter, feeding may not be necessary. The soil's natural fertility can be supplemented with a single application of a slow-release ballanced fertilizer like Osmocote, which lasts the entire season, or a water-soluble fertilizer at about half the concentration recommended on the label every 3 to 4 weeks.