Plant angel wing begonia, (Begonia x semperflorens-cultorum), in a garden spot or a container, and you'll be rewarded with plump green foliage and big colorful blooms in shades of red or pink from May to October. Like all begonias, angel wing begonia is especially prized because it will grow in areas with low levels of sunlight. Angel wing begonia can be propagated by taking a leaf cutting from a healthy, actively growing angel wing begonia.
Fill a 3- to 4-inch planting container that has a drainage hole in its bottom with commercial potting mixture.
Set the container in a saucer of water and allow it to absorb water through the drainage hole until the potting mixture is thoroughly damp. Remove the container when the potting mixture is damp so the potting mixture won't become soggy.
Wipe a sharp knife or razor blade with rubbing alcohol to prevent bacteria from being passed to the leaf cutting. Cut a leaf from the angel wing begonia along with up to 1 to 2 inches of stem.
Dip the cut end of the angel wing begonia stem in powdered rooting hormone and plant it in the potting mixture. Put the container in a clear zip-lock bag.
Place the container in a warm room where the plant will be exposed to bright indirect light. Avoid putting the angel wing begonia leaf cutting directly in a bright window as the sunlight, magnified through the plastic, can burn the leaf cutting.
Ensure that the environment inside the plastic bag remains warm and humid. Open the bag and mist lightly if the top of the potting mixture is dry.
Watch for a new plant to form at the base of the angel wing begonia leaf in two to four weeks. Remove the container from the plastic bag and move it to a sunny window. Discard the original angel wing begonia at this time and the new angel wing begonia will continue to grow.