You can cut back on water during their dormant period in the winter, watering only when the pot dries out. During the winter, when the Rex begonia isn't actively growing, cut back watering to about once every two to three weeks. High mineral salt content can cause leaf edge burn in rex begonias because of their inability to deal with the high loads of dissolved mineral salts present in hard water. Sometimes called painted-leaf begonias or fancy-leaf begonias, these plants are known for their showy, sometimes jaw-dropping leaf coloration. Save my name, email, and website in this browser for the next time I comment. Slightly moist soil is ideal for painted leaf begonias, but excess moisture will cause root rot, so make sure the water drains properly from the pot and you empty the saucer of excess water. Leaves will offer you a clue — leaves that have burnt edges indicate that the plant isn’t receiving the humidity it needs. The potting medium for rex begonias should have well-draining soil that is light and rich. Consider other alternatives to rexes that look like rex but don't have the rex parentage in its line. However, to ensure proper begonia care, you should be wintering over begonias indoors if you live in areas prone to freezing temperatures, such as northern climates. The leaves of an overwatered plant often struggle for water and are vulnerable to drying in bright conditions. Begonias are often a problem for many people because Begonias differ so much in the way they grow. Remove some foliage from the top of the plant, along with any buds, flowers, and fruit. Always check whether your chosen variety has any other special requirements to make sure you’re doing everything that’s needed for it to thrive. Observe the amount of sunlight that falls on the begonias during the day. To meet the plant’s humidity requirements, you need to increase humidity levels either manually or by using a humidifier. How do I know if I have tuberous begonias? Planting begonia from seed is a difficult task. The advice given here will help guide you to growing success. Sterilize soil or media before replanting. They thrive in organic, sharp-draining soil and in shade with lots of humidity. It would also be a good idea to increase the air circulation around the plant to prevent further incidences.” If you water early in the day, it gives the foliage time to dry before nightfall. If you’re comfortable, the Rex Begonia is comfortable. As an Amazon Associate I earn from qualifying purchases. Getty Images. Rex begonias don’t mind being a bit root bound, but repotting each spring is beneficial to the plant. Be careful not to bury begonia seed too deeply when planting. How often should I water my indoor begonia? Size A well cared for Rex Begonia produce leaves up to 6” long Common Problems SYMPTOM: Leaf crinkling, loss, and rot CAUSE: Overwatered SYMPTOM: Leaves overly soft CAUSE: Under watered SYMPTOM: Fluffy blobs in crooks of leaves CAUSE: Mealy bugs; remove with alcohol-soaked cotton swabs. Does Hermione die in Harry Potter and the cursed child? Required fields are marked *. Overwatering and underwatering can both cause wilted, discolored foliage. A Note of Caution For Indoor Rex Begonia Care. Painted leaf begonias are high to medium light plants, so aim for bright indirect light all year round. Most of these issues can be avoided by strictly observing the plant’s growing requirements. Most begonias will only live 2-3 years, even with stellar care. I propagate at least 100 per year. Even if you water your begonia properly, high humidity along with cool temperatures can increase the likelihood that the begonia will suffer from leaf rot and/or botrytis. Peat-based potting mixers are a good choice. At the beginning of this article, I mentioned how rex begonias aren’t the easiest plant to grow. I also could be wrong but that pot looks far too big, most begonias have shallow root systems so you have to be really careful about potting them up too far so they don't get overwatered. I earn a commission if you make a purchase through my referral links. Of course, you’ll also need to make adjustments and increase ventilation while also maintaining the high humidity levels the plant requires. You want to avoid direct sun exposure, which will certainly burn the leaves of the rex begonia. Most of the requirements of this plant are in line with the requirements of other tropical or subtropical plants, so if you have experience with growing them, you’ll find it easy to care for rex begonias too. If you still experience problems, you need to change the location of the plant to a place where it can get bright indirect light. This requires that you periodically (every 3-4 months) flush the soil to wash away any build-up. Where there is a lack of natural light, artificial light in the form of fluorescent lighting can supplement the lack of natural lighting. Mist the foliage of Rex (foliage) type begonias twice a week or provide high humidity to avoid leaf drop. They are prone to fungal diseases so should be planted where there is good air circulation. 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. Their intricate leaves do not need a full sunlight position for optimal photosynthesis. They have a reputation of being difficult to grow, although there are varieties that are less demanding. The ideal temperature for these plants is between 60°F to 85°F (15 °C to 30°C), which is the ideal range for most tropical plants. The other key to success with rex begonias in Booman’s book is tap-water quality. How do I know if my begonia has root rot? Ingesting the leaves of rex begonia plants can cause vomiting, drooling, and even kidney failure in severe cases. Wilted, overwatered plants are not always a lost cause. Regional Advice and Care. Brown Leaves. With the use of fertilizers, there is a concern of salt build-up in the soil. That’s because “hard” water with high mineral salt content causes leaf edge burn in rex begonias because they have no mechanism to deal with salt loads. Your email address will not be published. Don’t water the leaves, only the soil to avoid fungal disease issues. Avoid fertilization until the plant shows new growth. Locate the petiole: it’s the part where the leaf connects to its leaf stem. One of the chief issues with this plant is its preference for high humidity levels, something that not many of our homes can offer. You can pick a west or east-facing window but avoid south-facing windows if the weather gets particularly hot in your area. One of the more common types of begonias grown is the rhizomatous, or Rex begonia.Interested in growing begonia rhizomes? Let the potting soil dry out slightly between watering during lower light and cooler temperatures of late fall and winter. Fertilizing can be beneficial for rex begonias especially if done right. The leaves offer a spectacular sight with silver leaves etched with a deep purple. Make sure the pot has drainage holes. How do you know if your plant is overwatered? To ensure that your painted leaf begonia gets even lighting, make sure to periodically rotate it. Your email address will not be published. They frequently have large leaves (up to 6 inches long) that are brightly colored in various shades of green, red, silver, and even purple. The plant is known to have a high resistance to pests. Replant the begonia and water it, making sure the water drains well, as root rot is more common in waterlogged soil. Booman has been working to breed rex begonias with good salt tolerance, a tendency to hold their leaves over winter, and novel leaf pattern or intense leaf color. Although begonias can be fun to grow, they are susceptible to a number of pests and diseases. PlantIndex.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. They thrive in organic, sharp-draining soil and in shade with lots of humidity. These plants grow densely, you should not crowd multiple plants together. The plant contains soluble calcium oxalates, which are toxic to cats and dogs. Overwintering Begonias. Try to apply the water only to the soil and keep it off the foliage, which reduces disease problems. Humidity is crucial to keeping your rex begonia happy, however, spraying the leaves can lead to spotting. These plants are grown almost exclusively … Begonia plants, regardless of type, cannot withstand freezing cold temperatures and require appropriate winter care. Water begonias thoroughly when the top 1/2 to 1 inch of their soil feels dry. Rex begonias are a flamboyant plant with many features to please the eyes. Also keep them away from kids. Therefore, the rex begonia is a plant that will appeal to those who are more satisfied with elaborate foliage displays than blooms, especially that there are several rex begonia varieties. Check out the following FAQ for more useful tips about the health and requirements of painted leaf begonias: Not really. Marie Iannotti is an au There are several rex begonia cultivars with some of the most popular ones being: There are other hybrids and varieties with equally impressive leaves, but these are the ones you’re most likely to come across in garden centers. Clean the pot with bleach, then add sterile potting mix. Snow Queen: This rex begonia variety has beautiful silvery green leaves. This conserves energy for the plant’s recovery. Rex begonias have a good pest and disease resistance if growing requirements are met. General Rules. This means a well-draining, looser soil type is a good idea. Planting Seed. Rex Begonia like well-drained soil and high humidity. Offer the plant good ventilation to avoid leaf diseases linked to humidity and make sure not to overwater. Escargot: This variety stands out through spiraling markings that are light green or silvery interposed on a dark green background. Boston Cherries & Chocolate: This variety has dark purple leaves with pink or silver spots. Provide plenty of light and keep moist but not overwatered/soggy. Water only when the soil is dry to the touch, but do not let it get too dry. Edema. Because the leaves of rex begonias grow clumped together, the plant is dense looking and rounded. Tag us using #gardenista. Normally, you won’t need to water the plant more than once a week, but always let the soil guide you. Simply put a leaf cutting in a mixture of moist peat moss and perlite and wait for it to root. In summer, you can move your rex begonia outdoors in partial shade if its light requirements are not properly met inside your home. Some begonias offer not only delicate, colorful blossoms but also decorative foliage. Some cultivars can be very finicky, especially when it comes to humidity, but there are varieties that aren’t as demanding. Since I've seen a couple others cheat a bit with multiple favorites, I decided to forgo the agony of choosing just one plant and go with a group of plants: rex begonias. Rex begonia plant showing leaf detail. Begonia should be planted about 7 to 10 inches apart. Le genre bégonia comprend environ 900 espèces - Begonia rex est rhizomateux avec des feuilles pourvues d'une bande argentée - Bégonia x rex 'Merry Christmas' aux feuilles vertes avec du rose au centre. Copyright 2020 FindAnyAnswer All rights reserved. What should the timing be on a Chevy 350? Fireworks: This variety certainly lives up to its name. Begonia … It's a place where I share my process of discovery, experiments and all my trial & errors. As fall approaches many gardeners want to bring their flowers indoors to keep enjoying them into the fall and winter months. The third sign that your plant has been overwatered is edema. Among the various types of begonias, the Begonia rex are some of the most beautiful and stunning plants. Click to see full answer Also, why is my begonia drooping? Use clean, sharp shears or a knife to cut the stems back to a leaf node. The main rule of thumb for watering begonias is to not let the soil dry out completely. Begonia stems take root easily. Familj: Begoniaceae, begoniaväxter.. Ursprung: Begonia rex är från Ostasien, de rexbegonior som odlas idag är dock hybrider med en inte helt klarlagd bakgrund.. Beskrivning: Begonia – efter den franske botanikern Michael Begon (1638 – 1710) rex – betyder kung och kan eventuellt syfta på växtens sällsynt vackra bladverk. The spiraling leaves look like a snail. The problems you may encounter with rex begonias include mealybugs (sapsucker pests that can be removed using a cotton ball soaked in alcohol), root rot (caused by overwatering), leaf blight (caused by a temperature contrast between day and night), and powdery mildew (fungal problem caused by high humidity in the absence of air circulation). In case of fungal issues, you will usually need to use a fungicide to get rid of the problem. What's the difference between Koolaburra by UGG and UGG? During the winter, when the Rex begonia isn't actively growing, cut back watering to about once every two to three weeks. 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