Here's what you need to know to prune an Angel Wing Begonia: - When your plant is around 6 inches tall, gently pinch off the top growing shoot to encourage bushier growth. - Regularly remove any dead or dying leaves or stems. - Reduce the main stem to a desired height when your plant gets leggy. Be sure to cut just above a leaf node to promote new branching. - Cut the entire plant back to about 6 inches in late winter or early spring for a more drastic prune.