In rare opportunities, you may find a type of perennial begonia, but these aren’t common. You can choose to start begonias from cuttings as well.
Begonias can handle partial sun, but avoid placing them in direct sunlight. Also, red-leaved begonias handle heat better than green-leaved begonias. If the shade is too dense, your begonias won’t grow properly. Choose an area with indirect sunlight and partial shade. If you don’t have any indoor window space for potted begonias, you’ll need to use a fluorescent lamp in order to provide them with a bit of light.
If you use a peat moss mixture, soak the moss in boiling water and allow it to cool prior to planting the begonias. You can use a 20-20-20 liquid fertilizer on your soil/soil mixture for some added nutrients for the begonias.
Be sure to water at the base of the plant, rather than directly on the leaves. Also, don’t mist your begonias.