Water only when the Medium is Dry
Foliar Fertilizer - Once a Week with 1/2 Dilution Strength.
Do take note that this one truly hate too much water - the leaves may also change colors, especially turning pale green and the red and burgundy coloration faded. Do take note that if this happens - most likely the plant lifespan is numbered and the eventually leaf by leaf - they start dropping and the rhizome dried up or rotting and it is too late to safe the plant or rectify the problem.
Begonia Common Names and Images