Several begonia groups feature bright, colorful flowers, while others are grown primarily for their decorative leaves -- which can be textured, colored and ornamental due to their various shapes. When the soil is kept too wet, root rot can develop in Rex begonias. A rhizome is basically a thickened stem, and the leaves emerge from the rhizome. Shallow, wide pots are recommended for rhizomatous begonias. Choose a warm, humid, partly sunny indoor spot for your begonias. This type of begonia originates from South America, and it is a perennial flowering plant. In addition, use plants with a slow to moderately slow rate of growth, as quick-growing types will rapidly overtake the begonia and crowd it out. Enjoy your stay at Smart Garden Guide. Water the container’s soil again and until it’s running from the bottom drain holes. Most begonias bought at nurseries will be labeled as indoor plants or outdoor plants. Let’s get started with a quick summary of begonia maculata care. If you lack enough natural lighting, Rex begonias also perform well situated under fluorescent lights, which gives you more options in suitable indoor locations. Rex begonias with good care are usually bothered by only a couple problems and keeping fallen leaf debris cleaned up, making sure it gets adequate circulation of air, and proper water goes a long way in prevention. Depending on the cultivar (the botanical name for a specific variety), Rex begonias average anywhere from 12 inches to almost 24 inches tall, with a similar width, when fully grown. Signs the Rex begonia isn’t getting enough humidity is burned, brown areas on the edges of the foliage. Choose an indoor type of begonia. Fill the remainder of the container with the potting mix, carefully firming it up around the begonia and being sure not to plant any deeper than it was growing in its nursery pot. Leaves form from rhizomes, having characteristics like unique veining, ruffling and puckering, with splotching, spotting, streaking or borders ranging in a host of different hues. Cease fertilizing in fall or early winter when the Rex begonia is dormant (when its growth slows). You can also treat the fungus by spraying it with the homemade baking soda fungicide mixture described in the botrytis section above. During the winter, when the Rex begonia isn’t actively growing, cut back watering to about once every two to three weeks. Many types have a silvery or metallic sheen over the leaves, adding even more interest. To know how to care for your begonia over the winter, you really need to know what kind of begonia you’re growing. If the leaves start to turn white or faded, or look like they’re burning, then that means it’s getting too much sun. Angel Wing Begonia is an exotic plant that can be kept indoors as well. If the air in your house is dry, especially in the winter, it is a good idea to set your begonia houseplants on a shallow tray filled with pebbles and water. While a lot of people may opt to grow begonia outdoors, you can plant them even indoors. Tuberous-rooted begonias go dormant in wintertime. If you are looking for a plant that adds robust color to indoor spaces, then look no further than the flamboyant Rex begonia (Begonia rex-cultorum). Expert Tip: If the edges of the foliage turn brown and looks burned, the Rex begonia is too close to the window. The problem is most prevalent when nighttime conditions are cool, daytime conditions are warm, the soil is too moist and there’s moisture on the foliage. I’ve covered 10 great ways for increasing humidity in another article. Continue reading because we take the mystery out of Rex begonia care indoors. Here’s Angel Wing Begonia care guide summary: It likes humidity and a lot of water. 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