mature, donor plant
plastic 4 or 6-packs
scissors, box cutter or other sharp knife
Perlite, Vermiculite or sand
Step 1: Taking the cuttings
Step 2: Pruning the cuttings
Step 3: Planting the cuttings
Water immediately and water every day if needed. I put my cuttings under fluorescent lights. They provide lots of illumination but not too much heat. The cuttings will look like they are about to die for the first week or so. The leaves are working hard to support new root growth.
Step 4: Transplanting the starts
Step 5: Take care of your plants.
If you have a friend with an impatiens of a color you like, ask for a cutting. Moisten it and take it home in a plastic bag. Keep it out of direct sunlight, extreme heat or cold until you can get the cutting planted.
See my Instructable on building your own light box. http://www.instructables.com/id/Plant-starter-light-boxgrow-your-own/