How can I rejuvenate my Begonias?

Begonias are great during the cooler weather of spring or autumn but they tend to pout during the heat of the summer. 

You can use them as spring annuals or if you want to keep them until the cooler weather of autumn occurs, give them a little extra TLC.  Keep them watered, provide shade for them, trim off the dead and scorched foliage but do not stress them further by over fertilizing during the heat of the summer. If they are in pots, you may want to move them to an area that is not so noticeable during the heat of the summer and if they recover in the cooler weather, move them back to a more prime space.