Begonia maculata, commonly referred to as the Polka Dot Begonia, is undoubtedly one of the most strikingly gorgeous species of indoor plants. This exotic plant derives its name from its unique silver spotted leaves and red undersides. Begonia maculata does well in a potting mix with good drainage using a soil mix with sand and clay. Keep temperatures between 67 to 70°F with high humidity and keep the soil a bit damp, but not overly wet when watering.