Rex begonias perform best with indoor temperatures ranging between 60°F to 85°F (15.5°C to 29.4°C). It’s better to cluster your plants, so they can create their own humid environment, or use a pebble tray. Bacterial Leaf Spot (Begonia) Problem Info . Rex Begonias do bloom but the flowers pale in comparison to the amazing leaves which seem to glisten and sparkle in the light. Aster Yellows is a disease caused by leafhoppers that results in spindly growth and yellow veins on young begonia leaves. 5. they are not touching my daisy's or: Answer from NGA June 25, 2009. Viewing 6 posts - 1 through 6 (of 6 … Hi, I got this begonia rex on clearance for 1$ (i know this begonia may not even worth 1$), it has put out a new leaf but I've noticed that the new leaf and the other one leaf have a hole in the middle of the leaf. ... Rex Begonias are admired for their fabulous foliage. Rex begonias can be very demanding of just the right amount of water, food, and humidity. Rex begonias (Begonia rex) are tropical plants, prized for their colorfully patterned and intriguingly shaped leaves. Too much food will make for a scraggly plant, so pay attention and adjust the feeding to suit your variety. In most cases, a spray form of pesticide will take care of the issue. Why an Indoor Stephanotis Has Drooping Leaves, University of Illinois Extension: Rex Begonia, University of California IPM: Begonia — Begonia spp. The rex begonia is a native of Southeast Asia. leomatty067 Dec 10, 2018 2:54 PM CST. Mealybugs, aphids, and caterpillars can also become a problem. Propagating Rex Begonia. Poorly draining soil invites fungal disease and makes it difficult for the roots to suck up moisture. Rotating potted rex begonias will keep the plants full and stocky. A rex begonia suffering from mold may have discolored leaves with soft stems or patches of gray or black mold growing on the leaves. Several factors cause begonia leaves to fall off suddenly and rot. Bacterial leaf spot, mildew, and botrytis can occur if the leaves stay wet. Infected begonia leaves will be covered with a white or ash-gray powdery mold. There are many cultivars available with attractive coloured and patterned leaves. A peat-based potting mix is ideal for containers. They frequently have large leaves (up to 6 inches long) that are brightly colored in various shades of green, red, silver, and even purple. Avoid overhead sprinkling. Views: 2233, Replies: 2 » Jump to the end. Because of their native environment, high humidity, warm temperatures, and indirect or filtered light are the essential care factors. Be sure your garden beds or containers meet the requirements of the rex begonia. Rex begonias (Begonia rex) are tropical plants, prized for their colorfully patterned and intriguingly shaped leaves.Although they are at home in a shady garden, they are also popular as houseplants.Many people collect and display several varieties. Make sure the sun or artificial light isn’t shining right on the plant. Use a commercial peat-lite potting mix, and always avoid heavy and poor-draining soil mixes. Plants … Begonias are plants that originate from warm, humid parts of the world like north India. Begonia Rex-cultorum group, (bah-GO-nyah). Plants will vary and the only way to know what your plant wants is to watch it, once it has adjusted to its new surrounding. You can feed Rex Begonias every two weeks or so using a diluted regular balanced houseplant fertilizer during the growing season (Spring through Fall). More popular than begonia blooms, the leaves of certain begonia varieties grow into mosaic patterns of varying colors. Avoid direct sunlight. A … You can feed your potted plants monthly with any good houseplant food. Rex Begonia Features: An Overview. Something is eating the leaves on my begonias and pansys, can't see any bugs, what can I spray on them? The spots are translucent and turn brown with yellowish, translucent margins. They will stop growing when temperatures dip below 58°F (14.4°C). There are many different varieties of Rex begonia… Rex Begonia’s are also called looking glass plants. Eventually, you'll figure out the right balance. Begonia stem and root rot, also called begonia pythium rot, is a very serious fungal disease. Rex begonia plants have calcium oxalate, which is toxic to dogs and cats. Among the first signs and symptoms that growers may notice when dealing with leaf spot on begonia is the appearance of darkened spots or “water soaked” leaves. These evergreen perennial plants are native to the tropical rainforests in Brazil. In pots, be sure to provide drainage holes. Most rex begonias sold today are named hybrids, although they are not always labeled as such. In fall and winter, plants may undergo a natural dormancy if temperatures are low, dropping leaves and appearing dead. In 2017, we offered a Rex begonia called ‘Jurassic Silver Swirl’ for the first time. Family Begoniaceae (Begonia Family), University of Arkansas Cooperative Extension: Houseplants -- Begonia, Missouri Botanical Garden: Begonia Rex-Cultorum, University of California IPM: Water Excess or Deficiency. Begonias (Begonia) Posted by jmorth. Outdoors, water tuberous begonias in the garden with a drip system or a hose than drips directly into the soil. Many people collect and display several varieties. Among the various types of begonias, the Begonia rex are some of the most beautiful and stunning plants. Most begonias are grown a s flowering pot plants, but the Rex begonia (Begonia rex-cultorum) is grown primarily for its brightly colored, variegated foliage. Mealybugs may attack both outdoor and indoor plants, appearing as cottony masses on the leaf joints and sometimes causing leaf stunting. Sometimes called painted-leaf begonias or fancy-leaf begonias, these plants are known for their showy, sometimes jaw-dropping leaf coloration. A sunny windowsill with a thin curtain is the best type of spot. Bird of Paradise plants split their leaves to allow wind through as well. If your begonias are infected, the stems become waterlogged and collapse. Damp soil may cause fungus infection at the base of the stem, causing the plant to topple over. Plant rex begonias in a container or hanging basket with drainage holes in the bottom. Rex begonias can be temperamental and you just have to find the right conditions and balance for your plant. Caterpillars and earwigs cause similar damage to slugs and snails. The spots enlarge and run together, giving the leaf a blotched appearance. Rex begonia (Begonia rex-cultorum) is a notoriously high maintenance frost tender perennial commonly grown indoors as a houseplant. These plants do require high humidity (more than 50 percent), which means it can be difficult to maintain rex begonias indoors over the winter. They look great outdoors in shady tropical gardens, but the most popular way to display rex begonias is to collect and group them together, each in its own pot. Though rex begonias love warm weather, they will not grow well in full sunlight. Above: Begonia rex ‘Red Tango’ mixes well with other shade- and humidity-loving plants such as asparagus ferns and geraniums. are tropical plants cultivated as houseplants or as edging in a garden for their handsome, succulent, often varicolored leaves and waxy flowers. Begonias Move your plant to a shadier area. The leaf edges and undersides are covered with short red hairs. Humidity is crucial to keeping your rex begonia happy, however, spraying the leaves can lead to spotting. The plant will very easily regrow from these, so if you snip off an inch or two of stem with some leaves attached like in the image below, you’re all set for success. Read on for information about this disease and tips for treating begonia … Water your rex begonia deeply, allowing the soil to become almost completely dry between waterings. Worm Infestation. According to the University of California IPM Program, improper irrigation is among the most common causes of damage in plants. Leaf spots of begonia are caused by a pathogen called Xanthomonas. Remove any damaged leaves or stems and treat plants affected by insect pests with a horticultural oil and baking soda mix. Stick your finger into the soil before you water to check for dampness. Fading leaves on a Begonia rex is a sign of too much direct sunlight. Water sparingly if this happens; new, healthy leaves will appear in the spring. Houseplants forum: Holes on Begonia Rex leaves. The varieties of begonias number in the thousands, and their popularity is quite apparent. This is especially true for houseplants during the winter. Full sun to partial shade. Conditions: Considered perennials in tropical and semitropical climates, Rex begonias are frost tender and typically grown as annuals or houseplants in North America. Causes of Crisping Leaves in Rex Begonias Humidity Help. Repotting rex begonias each spring will ensure that they have plenty of soil to grow in, but they like to be a little bit pot bound. It MAY be insects, but there are also other possibilities with begonias: Have you gotten your little guy's leaves wet? To really play up the unique qualities of begonia rex, pair them with solid green plants with different textures or forms. Although they are at home in a shady garden, they are also popular as houseplants. Direct sunlight will bleach the leaves or cause sunscald, resulting in brown, dry tips or patches. Rex Begonia fertilizer. Small, blisterlike spots appear on the leaves. Begonia maculata is a type of cane begonia that has thick stems that support spotted angel wing-shaped leaves. How To Water A Rex Begonia Indoors. White Coating On Leaves Caused By Powdery Mildew Powdery mildews are caused by fungi that live on the surface cells of plants. These plants are grown almost exclusively for their f… Rex Begonia leaves also grow in purple, cream, pink, and silver. Keep water levels low enough that they do not touch the bottom of the pot. Learn tips for creating your most beautiful (and bountiful) garden ever. Marie Iannotti is an author, photographer, and speaker with 27 years of experience as a Cornell Cooperative Extension Horticulture Educator and Master Gardener, The Spruce uses cookies to provide you with a great user experience. They eat small, rounded holes in the begonia's leaves. Origin: The initial species, B. rex, originated in the forests of northern India.Today, there are countless cultivars derived from this species enjoyed around the world. If you live in an area that's prone to flooding, growing your begonias in a pot will give you the option of bringing them under shelter in rain. Michelle Wishhart is a writer based in Portland, Ore. She has been writing professionally since 2005, starting with her position as a staff arts writer for City on a Hill Press, an alternative weekly newspaper in Santa Cruz, Calif. An avid gardener, Wishhart worked as a Wholesale Nursery Grower at Encinal Nursery for two years. They need some light to keep their coloring, but bright, indirect light is best. If it's flourishing, continue with what you were doing. Locate the main veins on the begonia leaf and cut from the edge of the leaf all the way back to where the stem once was. Many hybrid varieties are beautiful, but they are unlabeled or mislabeled, so be sure to ask questions so you know exactly what you're buying. The leaves grow on short leaf stalks, from the underground rhizome. If you don't see insect pests, I wonder if slugs or snails are busy eating the leaves after dusk? Wishhart holds a Bachelor of Arts in fine arts and English literature from the University of California, Santa Cruz. Begonia rex should be watered when the soil or pot feels dry, but don’t wait until the plant starts to wilt. 0. Indoor plants require bright, indirect light. By using The Spruce, you accept our, The 5 'It' Plants of 2021, According to the Pros, 10 Varieties of Begonias for Gardens and Containers, 10 Top Outdoor Garden Plants That Thrive Indoors. According to the University of Illinois Extension, rex begonias with crispy brown leaf margins are usually suffering from low humidity levels. You can cut back on water during their dormant period in the winter, watering only when the pot dries out. Soft or droopy leaves accompanied by wet brown spots is a sign of infection by botrytis blight. Some have suggested that Monsteras create holes in their leaves to resist the strong winds of hurricanes. Like other begonia species and other tropical understory plants, the Rex enjoys a shaded, humid, and quiet environment to grow in. Knowing when to water your Rex begonia is easy, although you will probably have to water weekly, especially during the growing season. You can increase humidity by running a humidifier in the room with the plant or by placing its pot on a shallow tray filled with water and pebbles. Others suggest that they have the holes that better allow water to come in contact with their roots. Rex begonias have high humidity needs, requiring levels around 50 percent or more. Try to keep the soil evenly wet (not soggy). Rex begonias have high humidity needs, requiring levels around 50 percent or more. Water-soaked areas surrounded by yellow halos develop on leaves. Though rex begonias love warm weather, they will not grow well in full sunlight. Mix 1 tablespoon horticultural oil and 1 tablespoon baking soda with 1 gallon of water. Handle slugs and snails by placing slug bait near your plants. Don’t feed at all during the winter. Begonia rex is sensitive to temperature changes and to temperatures below about 60 degrees Fahrenheit (16 Celsius). Rex begonias prefer light, rich soil. Sometimes a slimy substance oozes from the infected areas, turning light brown as it dries. Also, if the soil goes from wet to dry to wet, this could cause leaf problems, too. Many of the houseplant Begonias have cane-like stems that leaves sprout from. It doesn’t have to be the tip of the stem: any piece of 2″ or up will work. Large or gangly plants can be pruned into shape. If your rex begonia develops crispy brown leaves, its likely a sign that the plant's cultural conditions are less than ideal. Identify the cause of the fickle plant's distress and make the necessary adjustments to help the plant recover so it can exhibit the striking foliage rex begonias are famous for. Begonia blooms range from small and delicate to large and roselike. Home › Forums › Gardening Discussions › Flowers & Shrubs › Holes in my begonia leaves Tagged: begonias This topic contains 5 replies, has 4 voices, and was last updated by HaroldMe 3 years, 2 months ago. When planting directly in the ground, a moist, well-drained location is optimal and mulch will keep the roots shaded. Rex Begonias are not difficult to divide and propagate, which comes in handy as individual plants usually don’t have a very long lifespan. Because it's a relatively short houseplant, Rex begonia is perfect for desks and tabletops where is wildly colorful, variegated foliage makes it a perfect contrast against other houseplants. They come in a variety of forms including those that grow canes a little like branching bamboo, clump formers and others with rhizomatous creeping roots, those with the largest leaves are Begonia rex. There are hundreds of cultivars of B. rex to choose among, usually classified by leaf size—small (three inches or less), medium (three to six inches), or large (more than six inches). You can keep them happy as houseplants or store them dormant over winter, as you would with other tender bulbs. Introducing "One Thing": A New Video Series, Annuals that can be grown as a houseplant, South and Central America, Africa, southern Asia. Despite its exotic looks, Rex begonia is actually easy to grow. To help prevent diseases and insects, keep the plant tidy by removing dead leaves and debris from the plant and the surface of the soil. Remove mealybugs by dipping a cotton swab in rubbing alcohol and using it to wipe off the pests. Root rot can be a problem in wet areas. Begonia rex: Evergreen perennial to 30cm, with large, obliquely ovate leaves which are metallic green with a silvery zone on the upper surface, reddish beneath; panicles of small pink flowers in winter. Depending on the cultivar, the Rex begonia plant can reach from 12 to 24 inches in height and spread. Alternatively, if your area is too cold, consider growing yours as a houseplant or in an outdoor container that can be brought indoors in cooler weather. Exactly what is begonia pythium rot? Lose the Light. Rex begonia offers colorful foliage and is one of the most interesting indoor plants around. This plant is susceptible to fungal infections, mainly bacterial leaf spot. Most rex begonias sold today are named hybrids, although they are not always labeled as such. They all have their merits. When watering, try not to do this - begonias are fussy and do not like wet leaves. If it is droopy or gangly, adjust the light and water. © Copyright 2020 Hearst Communications, Inc. Rex begonia hybrids have been developed to have unusual markings, leaf shapes, and colors. Begonias (Begonis spp.) Rex Begonia. Another thing that can cause your begonia to drop leaves is attack by worms. Outdoors, where rex begonias are only hardy in U.S. Department of Agriculture plant hardiness zones 10 and 11, the plant prefers partial or even full shade, though some morning sunlight is fine. The clumping growth habit of Rex Begonias, coupled with their tightly packed leaves, makes for a dense plant. Grow these babes in shade or bright, indirect light. Rex begonia requires a well draining, porous soil mix. 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