Most begonias grow best in part shade (4 to 6 hours of direct morning sun a day), or filtered sun (as through trees). Most will tolerate full shade (no direct or filtered sun), but won't be as dense and usually have fewer flowers. A few grow in full sun. They prefer moist, but not soggy, soils.

Which begonias can tolerate sun?

Wax begonias (Begonia x semperflorens-cultorum) are the best begonias for sun, heat and drought tolerance. Varieties with bronze-colored foliage are the best for full-sun conditions. The cultivars "Victory" and "Cocktail" are two examples of bronze-colored wax begonias.

Are begonias better in sun or shade?

Begonias need some sunlight, but they don't do well if that sunlight is harsh and direct. Instead, place them in filtered light, such as beneath high, thin tree canopies.