These are great little plants although some varieties can be huge. They have interesting foliage and beautiful flowers. They make great indoor or outdoor plants but the reason I love them is because they are tough.
They do well in pots even if you forget to water them and seem to survive out in the garden on their own quite well too. Frost is their enemy so plant in a frost free position. Once established, you can just snap off a piece and pop it into some moist soil and watch it grow. Why not pot some up, they can be wonderful gifts to take to a friend.
Begonias are the perfect plants to fill that spot in the garden that has filtered sunlight and stays moist.