Edges Of Begonia Leaves Turned Tan Color And Leaves Are Turning Brown

Question From: Mechanicsburg, Pennsylvania, United States
Q: have two kinds of begonias one with purple leaves and the other with green leaves. The edges of the started to turn a tan color. Now the leaves are turning brown. What would cause this? And what would be the cure?

A: Sounds like they are not getting enough water, or possibly too much sun Carol. Best And Happy Yardening, Nancy