Begonia Rex offers colorful foliage and is one of the most interesting indoor plants around. Despite its exotic looks, Begonia Rex is actually easy to grow. Because it's a relatively short houseplant, Begonia Rex is perfect for desks and tabletops where is wildly colorful, variegated foliage makes it a perfect contrast against other houseplants.
Light: Grow Begonia Rex in a medium to bright spot as a houseplant. In Southern regions, it may benefit from protection from direct sun during the heat of the day, but in Northern regions, some sun on the leaves presents no problem.
Water: Water Begonia Rex when the potting mix just dries. It's better to keep them a little too dry than too wet; they can rot if the soil doesn't dry out well enough.
Humidity: Begonia Rex don't require quite as much humidity as many other exotic houseplants, but if your home has dry air, boost the humidity in the winter months to keep the leaf tips from turning brown and dry.
Fertilizing: Begonia Rex aren't heavy feeders, so you can fertilize them as little as once or twice a year. But if you want faster growth, fertilize them more frequently with a general-purpose houseplant fertilizer (following the directions on the packaging).