Begonias are a class of plants that originated in the rainforest. With over a thousand species these delightful plants range in size from miniature varieties reaching heights of 3 to 4 inches to giants like the angel wing begonia that reach a height of 3 feet when provided optimum growing conditions. Propagating angel wing begonias from stem cuttings provides a host of new plants identical to the mother plant.
Select a healthy stem with at least two sets of leaves on the terminal end. Clip the stem just below a leave node with sharp clippers or a sterilized knife.
Remove leaves on the bottom 2 to 4 inches of the stem. Insert the stem into a glass or jar of water. Although a decorative vase makes an attractive display of stem cuttings, clear jars or vases allow you to observe root development without disturbing the plant.
Place the jar in a sunny location. A kitchen windowsill near the sink is ideal as this allows you to monitor the water level and to change water easily. Replace water as it evaporates and change the water completely if it becomes stagnant.
Watch for the emergence of new roots. These should appear within a week to 10 days. Once roots are several inches long and the cutting shows new growth, it is time to plant the seedling.
Fill a plant pot ¾ full with fresh potting soil and gently place the rooted cutting in the soil so the roots spread out in the pot. Fill in around the base of the plant, covering the roots with soil and water thoroughly.