If you want to give your Rex begonia a break from inside your home, just place it in a shady to partially shady location outdoors and care for it as usual. Expert Tip: When selecting companion plants that grow well with Rex begonias, be sure to choose ones that require the same growing conditions of cooler temperatures and moist soil. A graduate of East Carolina University, Kilpatrick writes for national and regional publications. Rex begonias perform best with indoor temperatures ranging between 60°F to 85°F (15.5°C to 29.4°C). Under artificial lights plants, often use more water than plants growing in natural light, since growing and flowering is increased. It is important to remember that some types of begonias are grown for their brilliantly colored flowers, while other begonias are enjoyed for their unique and beautiful foliage. Enjoy your stay at Smart Garden Guide. In 1856, in a shipment of orchids to England, someone noticed an exotic and mysterious plant with elaborate foliage growing at one of the orchid’s bases. Many types have a silvery or metallic sheen over the leaves, adding even more interest. Using clean pruning snips simply cut the stem back to the base and the remaining portion should sprout new leaves and stems. Therefore, the begonia will require more frequent watering. They will stop growing when temperatures dip below 58°F (14.4°C). Knowing when to water your Rex begonia is easy, although you will probably have to water weekly, especially during the growing season. Fit the pot to the plant. Overwatering can lead to dropped leaves on begonia varieties such as the cane-stemmed types, leaving the plants with a leggy appearance. Indoors, you should grow begonias in a spot where they get bright, indirect light. If given proper care and growing conditions, all types of Rex begonias mature into plants with a dense habit of growth. Pots or hanging baskets of any material work well, as long as there are bottom drain holes. If you are creating a mixed container garden, or desire to plant several Rex begonias together, there several consideration to assure their continued health. If you lack enough natural lighting, Rex begonias also perform well situated under fluorescent lights, which gives you more options in suitable indoor locations. Make a small indentation in the center. Expert Tip: If the edges of the foliage turn brown and looks burned, the Rex begonia is too close to the window. Excessive soil in a plant container can lead to soggy, stagnant soil that smothers your plant roots and kills your begonia. From the 6- to 12-inch-tall wax specimens to cane-stemmed plants that can reach 7 feet tall, begonias grow with a large variety of sizes and forms, including the pendulous tuberous-rooted type. If you live in a location where spring and summer conditions aren’t extremely hot, you can also place them by a south-facing window. Here’s Angel Wing Begonia care guide summary: It likes humidity and a lot of water. Most begonias bought at nurseries will be labeled as indoor plants or outdoor plants. Rex begonias perform best with indoor temperatures ranging between 60°F to 85°F (15.5°C to 29.4°C). 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. Colors of the differing types of Rex begonias include mixes of greens, silver, white, reds and pinks, maroon, purple, yellow and orange. Follow manufacturer's instructions for mixing and frequency of use. Soil. Although Rex begonias are sure to bring a bit of an exotic and tropical appeal to your indoor spaces, use caution where you decide to place them. They will stop growing when temperatures dip below 58°F (14.4°C). Check your plants for dryness several times each week. However, there are several aspects you need to consider when selecting a container and growing medium, so you are sure to end up with happy plants that thrive inside your home. © Copyright 2020 Hearst Communications, Inc. Taylor's Weekend Gardening Guide to Indoor Gardens; Tovah Martin, The American Horticultural Society A to Z Encyclopedia of Garden Plants; Christopher Brickell and Judith D. Zuk. From then to today, Rex begonias are still brightening indoor locations with their stunning displays of pattered foliage. When the soil is kept too wet, root rot can develop in Rex begonias. Fibrous and rhizomatous begonias are easy to grow as house plants, but tuberous begonias need to be stored as bulbs over the winter, and hardy begonias should just be left outside. Rex begonias bring their flamboyant star appeal to outdoor areas where many flowering plants fail to thrive, and will be sure to steal the show wherever you decide to situate and grow them. The steps for transplanting Rex begonias from their nursery container into a more permanent one are relatively basic. As a low-light plant, begonias require less intensive artificial light than many other types of plants -- which grow with an artificial light as close as 3 inches from the top leaves. Place pots on trays of wet marbles or group several plants to increase atmospheric humidity in the vicinity of your begonias. Begonias such as Begonia Rex and Begonia metallica are popular houseplants grown for their attractive foliage or flowers. Expert Tip: Flush the container’s soil with fresh water about every three to four months. You can also fill the saucer with small pebbles and sit the pot on top, as it lifts it out of the wet conditions. When conditions are warm inside, Rex begonias are susceptible to a mealy bug infestation. Signs the Rex begonia isn’t getting enough humidity is burned, brown areas on the edges of the foliage. - Please note that the latter variety is near-impossible to grow indoors, as domestic growing conditions are far from suitable. (Causes And Solutions), Alocasia Frydek Care - How To Grow Green Velvet Alocasia, 14 Stunning Closed Terrarium Plants You Will Love, Anthurium Not Flowering? There are two main types of begonias commonly grown in the UK. 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. The plant contains soluble calcium oxalates, which are toxic to cats and dogs. Expert Tip: Don’t use a potting soil, as it’s heavier than potting mixes, has a tendency to retain too much water and doesn’t have good aeration, leading to the Rex begonia possibly developing root rot. It’s best to discard the plant and start over with a healthy one. If you use a saucer under the pot to catch the water, empty it after the container has fully drained. If it starts growing long and gangly reaching towards the light, it’s not getting enough sunlight. Those which are annual and grown from seeds / plug plants and those grown from corms, small bulbs. The leaves may have bold shapes or striking, often silver markings. Follow the instructions provided with your houseplant fertilizer. Place a fluorescent light 6 to 12 inches from the top of your begonia plant. This will allow your growing begonias to get the humidity they need indoors without water logging the soil or exposing the leaves to excess moisture that could cause disease. Unless humidity in your home is above average already, you’ll need to increase humidity manually. Thus, was the first documented discovery of Rex begonias. Although it’s doubtful you have a “jungle environment” in your own yard, those who live in frost-free locations can grow the begonia outdoors. How to Grow Haworthia With Fluorescent Lights, How to Set Up Artificial Lights for a Venus Flytrap, How to Encourage Root Growth in Leggy Plants. All species of begonias are subject to root and stem rot from soggy potting soil or excess watering. When you take care of begonias, make sure that you only water them when they need to be watered. Cease fertilizing in fall or early winter when the Rex begonia is dormant (when its growth slows). Generally, the rex begonia indoors prefers relatively cool temperatures, moist soil and humid conditions. An east- or west-facing window provides several hours of sunlight or bright light each day. You can also treat the fungus by spraying it with the homemade baking soda fungicide mixture described in the botrytis section above. You can also treat the problem with a homemade fungicide made up of 1 tablespoon of baking soda, 1 small squirt of a non-degreasing dishwashing liquid (helps the product stick to the begonia) into one quart of water. For Judy Kilpatrick, gardening is the best mental health therapy of all. Place in a propagator at a temperature of 18–24°C (64–75°F) with a high relative humidity. While temporary storage in the garage is fine for chilly nights, your begonias need a permanent indoor growing location for the winter. Allow growing room for the roots, but avoid using pots that are large in comparison to your plant root ball. 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. In addition, you can also spray the entire begonia with alcohol, being sure not to spray the soil. The most essential aspect to consider when preparing soil for Begonia Tuberhybrida is proper drainage. Try to apply the water only to the soil and keep it off the foliage, which reduces disease problems. Light filtering is also required on east or west windows if the windows face a body of water or expanse of concrete that reflects light into the window, increasing the intensity of light.