Can begonias brave a South Texas summer?

South TEXAS GARDENERQ. Our favorite nursery has good-looking semperfloren begonias on sale. We have never planted them before but they look good and we are thinking of giving it a try. How much sun can they handle and how long will they survive in the South Texas summer?
A. Semperfloren begonias are an excellent choice for planting in shade in our region. When planted now they can also tolerate a ...