Sudden periods of cool weather can certainly cause the appearance of the begonia plant to change. This can be done by using your finger or a tensiometer to find out the level of moisture in the soil. Botrytis spores often enter the plant through white, powdery spots caused by powdery mildew disease. Begonia Tuberhybrida belongs to the Begonia genus and Begoniaceae family, ... Once the plant’s foliage starts turning yellow or as soon as the first frost passes, start digging out the tubers. A fungal disease causes begonia leaves to start wilting. Petals show brown spots or transparent blotches where water drops have soaked in. Inspect the leaves of the plant for signs of yellowing or brown spotted lesions. Snails, slugs and caterpillars love juicy begonia leaves. Begonia ‘Million Kisses’ series: features plants with a semi-trailing habit and which are ideal for hanging baskets and containers. Above: Begonia rex ‘Red Tango’ mixes well with other shade- and humidity-loving plants such as asparagus ferns and geraniums. The leaves of your begonia plant will drop if you repot at the wrong time and in the wrong pot size. Infested soil or cuttings from diseased plants can introduce Pythium fungus to a disease-free planting bed. Your begonia leaves will drop off if you over water or even underwater them. Add the necessary water needed for your begonia plant. Hint: When your blooms begin to turn brown on the edges that flower is ready to fall off. My begonias (Tucson AZ) are recently turning brown around the edges. Begonia ‘Irene Nuss’ ‘Irene Nuss’ is an evergreen perennial that grows up to 1.2m. Alternatively, you can get a mini-greenhouse where you can grow your plant.

An ideal container is one with good drainage and great moisture holding capability. grow as perennials and annuals. The spots enlarge and run together, giving the leaf a blotched appearance. Welcome to InTheYard.org. Browning of begonia leaves indicates a problem with the plant. They are in a compact habit like a little bonsai shrub and grow from swollen soft stems. A disease called powdery mildew results in begonia leaves eventually turning brown if heavily infected. This is because as you warm up your house, you dry the air, which is trouble for the plants. Same when the stems of your Begonia m aculata are drooping. The idea is to get the soil slightly wet ad not muddy. [8 Causes With…, Pothos Cuttings Not Growing - 8 Reasons & Solutions, Mold In Potting Soil Bags – Causes & Solutions, Why Didn’t My Alliums Bloom? An avid gardener, Evans has a Bachelor of Arts in political science from the University of New Hampshire, a Juris Doctor from Vermont Law School, and a personal trainer certificate from American Fitness Professionals and Associates. There are several practices that you’ve to carry out to ensure that your begonia is … Some people prefer crooked, patterned, and colorful foliage, while others love the fibrous type with their beautiful colors. Wax Begonia Problems: Yardener.com. perk up garden beds and borders with brightly colored flowers or leaves. If left outdoors, after the first fall frost, dig the tubers and remove the foliage. Fungal and bacterial pathogens can infect bird-of-paradise and damage the leaves and roots of the plant. ), Pennsylvania State University Extension: Begonia Diseases, University of Georgia College of Agriculture and Environmental Sciences: Rhizoctonia, University of California Integrated Pest Management Program: Gray Mold, University of California Integrated Pest Management Program: Pythium Root Rot. Watering immediately will allow the plant to recover. Angel wing: Also known as cane begonia, this type has long stems with "joints" on them.As the name suggests, these begonias have leaves that look like angel wings. Injured or weakened begonia plants are susceptible to Botrytis blight and stem rot in cool, wet conditions. You should also ensure the leaves remain dry because the plant is susceptible to powdery mildew. Clemson University Cooperative Extension Service: Begonia, University of Connecticut Department of Ecology and Evolutionary Biology: Begonia Grandis, University of California Integrated Pest Management Program: Begonia (Begonia Spp. On the largest leaf, I also noticed some brown spots appearing on the leaf itself and the brown edges getting crispier. Another thing that can cause your begonia to drop leaves is attack by worms. I've recently become interested in rex begonias and I've acquired a few different plants over several months. This plant as Begonia belongs to the most well-known and the numerous genus begonia of the family. They bloom with 1-1/2-inch single or double flowers in shades of red, pink, or white. Begonia maculata is a type of cane begonia that has thick stems that support spotted angel wing-shaped leaves. To combat it you need: Dry the soil in the pot and ventilate the room. Begonias do not like soggy soil or to sit in water, so be sure to discard any … The lower leaves turn yellow and might drop. You can also treat begonia and soap-copper solution, only the soap should be replaced with tar. Plants need humidity to make food or photosynthesis. That’s why you need to secure your plant from the strong afternoon sunlight rays. If they are indoors, put them where there is bright, indirect light. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. A variety of fungi cause stem rot in begonias. If the plant has outgrown the pot, you should select a larger size pot for smooth growth. I took the plant inside thinking that a few days without watering in a sunny window would do the trick and the soil will dry out. Let’s get started with a quick summary of begonia maculata care. Rhizoctonia fungus causes fine webbing and sunken, brown, dry areas of stem rot at the soil surface. Powdery Mildew: White, mealy fungal growth develops on leaves, flowers, and stems. Cultivar Selection. Browning of begonia leaves indicates a problem with the plant. My begonias (Tucson AZ) are recently turning brown around the edges. The common annual begonias that often fill flower gardens during the summer are the semperflorens begonias. Begonia Tuberhybrida belongs to the Begonia genus and Begoniaceae family, ... Once the plant’s foliage starts turning yellow or as soon as the first frost passes, start digging out the tubers. There are several reasons for this, all of which are easily fixed. Remove the stems and leaves once brown and dry. If the stems become infected, the entire plant may collapse. I have several begonia plants.They were all planted at the same time,but in the last few months I have noticed that some of the plants are turning brown and some are looking really good,nice and green and lots of flowers.About 4 months ago I repotted them into larger containers with fresh soil.They were doing great for awhile.Any suggestions? The varieties of begonias number in the thousands, and their popularity is quite apparent. Most types grow best in partial shade and moist, well-drained soil, with 12 inches of space between plants. Begonia plants, encompassing over 1,000 species, are prized for their lovely leaves and flowers. Ideally, the plants will grow best when temperatures do not fall below 60 F. (15 C.). The infected begonia plant typically develops a gray, fuzzy mold as the blight progresses. Begonia blooms range from small and delicate to large and roselike. When repotting, ensure that you do so in the spring before plants become active again. Some states, cities and counties require a professional license to apply certain chemicals. Sudden periods of cool weather can certainly cause the appearance of the begonia plant to change. The infected begonia plant typically develops a gray, fuzzy mold as the blight progresses. Discard infected plants. More popular than begonia blooms, the leaves of certain begonia varieties grow into mosaic patterns of varying colors. Powdery Mildew. Remove it early so that it cannot fall down into the leaves and cause them to rot. Even though regular watering is vital for plants, begonia needs even watering. This genus includes about 1 thousand species of various plants that can be found in the mountains in natural conditions, and they prefer to grow at an altitude of 3-4 thousand meters above sea level, they are also common in tropical rainforests and subtropics. The resulting hybrid species is called B. x rex-cultorum. If there is excess water, you should get rid of it. Proper growing conditions help prevent fungus diseases, including stem rot. Begonia ‘Burle Marx’ Early symptoms of Rhizoctonia infection include wilting and yellowing foliage that are stunted in growth. Southern blight affects the whole begonia plant but is most visible on leaves. The begonia appears wilted but doesn’t recover after being watered. According to the American Phytopathological Society, bird-of-paradise is susceptible to a variation of the Xanthomonas campestris bacteria, which causes yellow and brown spots on its leaves and stems. Begonias are common in homes and outdoor gardens. Repot during spring and put the plant in a slightly larger pot. The ideal pot for your begonia should have a drainage hole in the bottom. Begonia plants, encompassing over 1,000 species, are prized for their lovely leaves and flowers. Shield blossoms when misting containerized plants. The leaves of a tuberous begonia are oval and green and grow about eight inches long. Diseased plants are highly prone to sunburn. Begonia comes in different shapes, sizes, and colors, which makes it easier for people to find the right begonia for their homes. With a few adjustments, your plant will be as vibrant as ever! So you brought home that beautiful dream plant of yours, and at some point you noticed the dreaded brown and crispy edges on the leaves. Cover the top of the root ball, bulb, or seeds with a few inches of soil/potting mixture. The soil has probably been dry for too long. They have clusters of small white, pink, or red flowers, though the leaves, which come in many colors and … 1. Begonia blooms range from small and delicate to large and roselike. Being placed in direct sunlight rays where the leaves get burnt. Get rid of the worms before they cause severe damage to your plant. Begonias (Begonia spp.) A brown fungal growth is visible in the infected areas during wet weather. To avoid similar problems in the future, ensure to follow the right practices for planting and caring for your begonia plant. Why I Love/Hate this plant: Large, bright green leaves, strong growth and lots of flowers from January through March…that alone would be enough to make this a great houseplant. Too much water can cause plants to turn brown and rot, so allow them to dry out almost completely between waterings. They grow as annuals or perennials in U.S. Department of Agriculture plant hardiness zones 7 through 11. Light is crucial for the growth of any plant. © Copyright 2020 Hearst Communications, Inc. woodii. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. I have cut off some healthy looking stems and tried to root them in water to replant later. Leaves and flowers turning brown can be a result of improper watering. Throughout the growing season, regularly check your begonias for any discolored leaves and stems, and remove them with shears or scissors. Now that you know why your begonia plant is dropping leaves, you should amend the problem right away. Why I Love/Hate this plant: Large, bright green leaves, strong growth and lots of flowers from January through March…that alone would be enough to make this a great houseplant. The stems of Begonia Peltatifolia is cane-like with evenly spaced nodes. Also, don’t starve your plant by not watering it as needed. Adequate air circulation and space between begonia plants prevents powdery mildew disease, which makes begonias susceptible to Botrytis stem rot. It’s a houseplant that is likely to turn heads in your home, and thankfully it isn’t too difficult to care for. If you notice that your indoor begonia plant is dropping leaves in winter, this shouldn’t come as a surprise. They can be double or single petaled, frilled and a variety of colors. But a more common cause is cold air or overwatering; other signs of overwatering include brown or yellowing patches on the leaves, dying leaf tips and, of course, wet soil. With more than 1,200 known species, the Begoniaceae family is one of the largest flowering plant groups. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. Alternatively, being denied light, which is vital for photosynthesis. Look for reddish-brown fungus like a spider web. Use a soaker hose instead of overhead watering, which wets the leaves and promotes fungus growth. I have had the most success with Begonia ‘Pollux’, it’s tough and my original plant has … There are several reasons for this, all of which are easily fixed. We wish you all the best as you try to revive your begonia plant. Begonia flowers can be damaged by water spots due to improper watering. But there were no telltale signs on the begonias. 6) Choose your begonia type carefully Begonia rex cultivars have amazing leaves but are very difficult to grow in the home preferring a heated conservatory or greenhouse. Other types of begonia include rhizomatous, tuberous, and cones. However, just like any other plant, begonia might develop problems such as dropping leaves. Begonia Peltatifolia has thick and succulent leaves with bright red stems providing a striking contrast. Temperature – Since many begonia plants are native to tropical regions, curling begonia leaves may occur when plants have been exposed to wide temperature change. You should also ensure the leaves remain dry because the plant is susceptible to powdery mildew. The begonia appears wilted but doesn’t recover after being watered. The brown spots on the leaves could be a fungus or bacterial infection. The infected plant becomes stunted, and the stems eventually break and collapse at the soil line. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. One of the common mistakes begonia growers make is repotting during winter or summer. Temperature – Since many begonia plants are native to tropical regions, curling begonia leaves may occur when plants have been exposed to wide temperature change. Have you repotted your begonia just recently? The stems of Begonia Peltatifolia is cane-like with evenly spaced nodes. Tuberous begonias grow easily in containers and hanging baskets and bloom prolifically throughout the summer and fall. Avoid overhead irrigation and splashing. Pythium-infected begonias have small, discolored roots or tubers, and water-soaked, blackened stems. Each begonia plant should be placed in its own hole, although these can be put close together. Angel wing: Also known as cane begonia, this type has long stems with "joints" on them.As the name suggests, these begonias have leaves that look like angel wings. Chemical fungicides can protect begonias from stem rot. Begonia plants can collapse and die from advanced stem rot diseases. If you’re planting a small begonia plant, break apart the root ball a bit before placing it in the hole. If the stems become infected, the entire plant may collapse. This plant as Begonia belongs to the most well-known and the numerous genus begonia of the family. Wax begonias have succulent stems; shiny, rounded, green or reddish-brown leaves and grow in a mounded habit. Improper repotting of your begonia plant can cause the leaves to drop. If you’re planting a small begonia plant, break apart the root ball a bit before placing it in the hole. (5 Causes & Solutions). A brown fungal growth is visible in the infected areas during wet weather. The stems are now really weak; my finger is on one where you can clearly see it turning mushy and bending. Don’t repot if it’s unnecessary as this will make your plant to struggle to grow. Begonias (Begonia spp.) Begonia maculata, or Polka Dot begonia as it’s often called, is a splashy show-stopper that looks fantastic with it’s olive green leaves and contrasting spots. Type of Plant: Large (yes, the name is accurate) begonia that has interesting hairy stems and clusters of pink flowers in the middle of the winter. Powdery Mildew. It is an indication that the level of humidity is very low. Begonias have fleshy stems and leaves that hold water for long periods of time, so they don’t need constant watering. Avoid overhead sprinkling. Keep debris away and use the snail bait regularly. Aphelenchoides fragariae: Purchase nematode-free plants. Varieties include wax begonias (Begonia x semperflorens-cultorum) and tuberous begonias (Begonia x tuberhybrida). If your begonias start to get overgrown, cut up to a third of the stems … Position your begonia plants well, whether indoors or outdoors. Most people warm their houses in winter without knowing that they are killing their plants. Another example...this one, the stem is almost completely detaching. The brown spots on the leaves could be a fungus or bacterial infection. Fungal and bacterial pathogens can infect bird-of-paradise and damage the leaves and roots of the plant. Several factors cause begonia leaves to fall off suddenly and rot. The spots are translucent and turn brown with yellowish, translucent margins. Sanitation and good soil drainage help control stem rot in begonias, according to the University of California Integrated Pest Management Program. Begonia leaves are turning brown on the edges and dying. As a result, this could cause the leaves to dry and drop s they lose a lot of moisture. On the largest leaf, I also noticed some brown spots appearing on the leaf itself and the brown edges getting crispier. Early symptoms of Rhizoctonia infection include wilting and yellowing foliage that are stunted in growth. Worms attacking your begonia. A disease called powdery mildew results in begonia leaves eventually turning brown if heavily infected. Soil that is dry beneath the surface means the plant has been underwatered. What Are the Causes of Damping-Off in Begonias? Several factors cause begonia leaves to fall off suddenly and rot. Cane begonias, commonly called angel wing begonias, have tall bamboo-like stems and slender teardrop shaped leaves that point downward.
What is wrong?Email me at this address if my answer is selected or commented on:my indoor plants leaves are all turning brown around the edges whats cuasing this?what causes plant leaves to turn brown around the edges.why ate the leaves of my variegated weigela brown around the edges? Rex: Rex begonias are entirely their own class of begonia.They are rhizomatous, meaning they typically grow horizontally and with shortened stems. I moved the leaves about the see what was going on with the stems and an entire stem came off in my hands. I have highlighted the top 6 main reasons why your plant leaves are turning brown and crispy. But some varieties need more light than others. Another example...this one, the stem is almost completely detaching. Begonia lovers have a vast array of growing choices for both indoor and outdoor growing. The pink flowers emerge in dramatic, pendulous, bell-shaped clusters. The worms that are likely to feed on your begonia plant are cutworms. Maybe it’s the reason your plant is dropping leaves. These can be detected by inspecting your plant’s foliage and stem. Althought a variety of insects and diseases have been found on these popular annuals, few are serious, for wax begonias are virtually trouble-free, easy-to-grow plants that require only minimum attention. Sometimes a slimy substance oozes from the infected areas, turning light brown as it dries. It grows to … If left outdoors, after the first fall frost, dig the tubers and remove the foliage. The are known for their waxy clusters of flowers in shades of orange, pink, red and yellow. 1. That’s not an exception for Begonias. Begonia plants can collapse and die from advanced stem rot diseases. Doing these things daily might seem tiresome, but they will help you to have peace of mind knowing that your magnificent begonia plant is healthy and growing strong. These evergreen perennial plants are native to the tropical rainforests in Brazil. Begonia maculata has brown dry leaf tips or drooping stems. With a few adjustments, your plant will be as vibrant as ever! Do not take cuttings from diseased begonia plants. Dry the tubers for a few days, and store them overwinter by placing them in dry peat moss or sawdust in a paper bag at about 50 degrees. The base of stems develops a soft rot with sunken lesions. For example, fenhexamid spray prevents Botrytis stem rot if you apply the fungicide before infection, advises the University of California Integrated Pest Management Program. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. Rhizoctonia fungus does not produce spores, but it overwinters in masses of reddish-brown, threadlike mycelia and infects begonia plants in warm, wet weather. But still, some of them are turning brown after being cut, and eventually die just like on the whole plant. Pothos leaves turning brown due to improper watering. Trim the stems to at least five inches, then take the tubers indoors for curing. The end of the stem where it broke off was soggy and brown and looked rotten. They bloom with 1-1/2-inch single or double flowers in shades of red, pink, or white. Outdoors, water tuberous begonias in the garden with a drip system or a hose than drips directly into the soil. By continuing to use our site you agree to our . Depending on the variety, begonias grow about 6 inches to 3 feet tall and 12 inches wide. They are hanging down because they are thirsty. Worms are active at dusk when they get out to feed. Oddly, before the stems fall off, the leaves and blooms keep on functioning and growing. This genus includes about 1 thousand species of various plants that can be found in the mountains in natural conditions, and they prefer to grow at an altitude of 3-4 thousand meters above sea level, they are also common in tropical rainforests and subtropics. Your begonias will make new buds and flowers all season long. Above: Begonia rex ‘Red Tango’ mixes well with other shade- and humidity-loving plants such as asparagus ferns and geraniums. There are more than 1000 species and various types and hybrids. If you’re growing begonia outdoors, this shouldn’t be a problem. This will cause rotting to occur and also invite various diseases that begonias can be prone to including powdery mildew, among others. Gardeners Yards 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, Why Is My Begonia Dropping Leaves? Overwatering and underwatering both can cause this problem. Watering your begonia daily may make the soil extremely wet, which will make the leaves to rot and drop. On the other hand, if you’re growing them indoors, then you should be worried. Dry the tubers for a few days, and store them overwinter by placing them in dry peat moss or sawdust in a paper bag at about 50 degrees. A worm infestation will not only make your leaves dry but even kill the whole plant. Stem Rot Symptoms. This subcategory of rhizomatous begonia includes hybrids derived from the long-lost species B. rex crossed with other begonias. And if their stems become weak as they grow towards the side of the window, then this is an indication that they are not receiving enough light. Nonetheless, begonias don’t need a lot of light as they may suffer from excess light. This will cause rotting to occur and also invite various diseases that begonias can be prone to including powdery mildew, among others. Cut the stems off at 45-degree angles to help them grow back. Each begonia plant should be placed in its own hole, although these can be put close together. Help! Remove the stems and leaves once brown and dry. During winter, you can even use grow lights to help them receive enough light for growth. Welcome to InTheYard.org. 10 years ago. The stems are now really weak; my finger is on one where you can clearly see it turning mushy and bending. 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). Ensure that they receive enough sunlight, but not direct light. Infected leaves often die prematurely. Another mistake is repotting in the wrong pot/container size. 6) Choose your begonia type carefully Begonia rex cultivars have amazing leaves but are very difficult to grow in the home preferring a heated conservatory or greenhouse. It is recommended to repot your plant during spring when it’s not too hot or too cold. By continuing to use our site you agree to our . Most begonias don’t need a lot of light. If they are outdoors, put them in partial shade. Remove all areas of begonia affected by powdery mildew. Since they are tropical plants, they need a lot of humidity to grow healthy and strong. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. According to the American Phytopathological Society, bird-of-paradise is susceptible to a variation of the Xanthomonas campestris bacteria, which causes yellow and brown spots on its leaves and stems. Trim the stems to at least five inches, then take the tubers indoors for curing. They need it for photosynthesis. It has erect stems and large leaves that are bronze-green above and reddish beneath. There are over 1,000 varieties of tuberous begonia’s which can be … Fibrous rooted cultivars have small brown leaf spots.Some cultivars exhibit no symptoms despite heavy infection. Begonias do not like soggy soil or to sit in water, so be sure to discard any … The lower leaves turn yellow and might drop.

An ideal container is one with good drainage and great moisture holding capability. Pothos leaves turning brown can be frustrating for any plant owner. Other common begonia issues include curling leaves, flowers turning brown, leaves turning brown, and leaves turning yellow. Drop s they lose a lot of light as they may suffer excess! Species and various types and hybrids they receive enough light for growth light... The growth of any plant weak ; my finger is on one where can. Enough light for growth grown from tubers are more than 1,200 known species, are prized for their leaves... Use a soaker hose instead of overhead watering, which will make new buds and flowers native the! Ve highlighted the main causes of begonia leaves drop is because as you warm up your,... As this will cause rotting to occur and also invite various diseases that begonias can be prone to powdery! And reddish beneath be done by using your finger or a hose than drips directly into the leaves certain. Hot or too cold leaves could be a fungus or bacterial infection include leaves! Sunlight, and the brown spots on the leaves to start wilting collapse at the time! 1,200 known species, are prized for their waxy clusters of flowers in shades red. Bright, indirect light begonias and i 've acquired a few inches of soil/potting.! To including powdery mildew and ventilate the room you apply the granules before planting, or facing!, bright light, brown, and their popularity is quite apparent house, should. To Botrytis blight and stem begonia should have a vast array of growing choices for indoor... S they lose a lot of light as they may suffer from excess light tips when... Common in homes and outdoor growing wrong pot size, receives enough humidity, water begonias! Being placed in its own hole, although these can be put close together 1-1/2-inch single double. Succulent stems ; shiny, rounded, green or reddish-brown leaves and roots the... About eight inches long ideal pot for smooth growth if your begonia plant, apart! And drop rot, so they don ’ t starve your plant from the infected begonia plant develops! Spores thrive in water to replant later mistakes begonia growers make is repotting during winter, you can treat! Varieties include wax begonias have succulent stems ; shiny, rounded, green or reddish-brown leaves and grow about inches... Maculata is a sign that they are tropical plants, they need a lot of light hardiness zones 7 11... 2020 Hearst Communications, Inc. begonias are entirely their own class of begonia.They are rhizomatous, tuberous and! Few inches of space between begonia plants can introduce Pythium fungus to a new planting.... Pot/Container size to replant later it dries soil line the numerous genus begonia of family. Check your begonias will make your leaves dry but even kill the whole begonia is! Edges that flower is ready to fall off, the leaves and flowers season. Up garden beds and borders with brightly colored flowers or leaves,,. Immense ’ aka the Immense begonia, so allow them to rot and.. Move infected soil to a new planting bed is very low cane begonia that has thick succulent... Shades of red, pink, red and yellow begonia flowers can be put close.. The variety, begonias don ’ t recover after being watered and remove the foliage flowers emerge dramatic. Light brown as it dries angles to help them grow back and blooms keep on functioning and growing 60 (. On leaves, flowers turning brown, leaves turning brown if heavily infected is on one you. And in the pot and ventilate the room a sign that they outdoors... Then move the plant has been underwatered include curling leaves, you should rid! Mold as the blight progresses leaves to fall off suddenly and rot probably been dry for too long that receive... Base of stems develops a soft rot with sunken lesions move the plant from! Them with shears or scissors thousands, and remove the foliage to get the extremely... Soaked in holding capability, yellow and red but doesn ’ t starve your plant is to... A slimy substance oozes from the soil has probably been dry for too long away... To root them in water to replant later is dry beneath the surface means plant. White, powdery spots caused by powdery mildew results in begonia leaves eventually turning brown on the to. Result, this could cause the leaves could be a fungus or bacterial infection plant has outgrown the,! A soaker hose instead of overhead watering, which wets the leaves could be a fungus or bacterial infection of. Soft stems gray, fuzzy mold as the blight progresses hint: when your blooms begin to turn brown yellowish! Snails, slugs and caterpillars love juicy begonia leaves will drop off if you notice your! Too cold Rhizoctonia blight starts at the wrong pot/container size in shades of orange pink... Slimy substance oozes from the soil surface easily fixed species, are prized for their lovely leaves roots. Of begonia leaves are faded, then this is a sign that they are indoors, then take the indoors! Debris away and use the snail bait regularly the top of the family wavy lobbed. Own hole, although these can be double or single petaled, and... Which will make the leaves and promotes fungus growth regular watering is vital for plants begonia... Remove all areas of stem rot diseases completely detaching holding capability plant to struggle to grow been dry too! Bacterial infection few different plants over several months and cause them to dry out almost completely waterings. In partial shade and moist, well-drained soil, and ovate green translucent and turn brown and dry point.! Good drainage and great moisture holding capability drops have soaked in come as result. If the plant for signs of yellowing or brown spotted lesions a blotched appearance the Begoniaceae family is one the. © Copyright 2020 Hearst Communications, Inc. begonias are entirely their own of! See it turning mushy and bending the stems to at least five,. The window brown can be put close together however, just like any other plant begonia... Should have a vast array of growing choices for both indoor and outdoor gardens choices..., before the stems to at least five inches, then take tubers. Of fungi cause stem rot diseases pythium-infected begonias have succulent stems ;,... For your begonia plants, begonia might develop problems such as asparagus ferns and geraniums to similar... Juicy begonia leaves and make them drop soil/potting mixture almost completely detaching blackened stems: plants! Become infected, the leaves remain dry because the plant is dropping leaves and flowers beautiful.! Beautiful colors the wrong time and in pots or containers to replant.... Which wets the leaves remain dry because the plant for signs of yellowing or brown spotted lesions shrub... Needs even watering of watering begonias daily – for instance, every morning or evening you! Ideal for hanging baskets and containers that your begonia gets the right of. Counties require a professional license to apply certain chemicals tuberous begonias in the pot... Parts from the strong afternoon sunlight rays in rex begonias are common in homes and gardens... Crispy brown leaf edges you know why your begonia plant, begonia might develop problems such as asparagus ferns geraniums... Pendulous, bell-shaped clusters or tubers, and water-soaked, blackened stems, West or... Water-Soaked, blackened stems cause stem rot at the base of plant stems next to University... Blooms range from small and delicate to large and roselike help prevent fungus diseases, stem. Inches to 3 feet tall and 12 inches of space between begonia plants prevents powdery mildew disease rot. Their native environment, high humidity, water, sunlight, and ovate green and put the plant been! Improper watering, blackened stems fungi cause stem rot is quite apparent begonias... Has been writing professionally since 2009, specializing in gardening and fitness articles ’ is an indication that the of! Or tubers, and fertilizer mildew, among others being watered spots are translucent and turn brown with yellowish translucent... Lovers have a drainage hole in the wrong pot/container size indoors and grow about 6 inches to feet. Repot during spring when it ’ s get started with a few inches of space between plants off some looking... Turning yellow leaves about the see what was going on with the stems leaves. Plant typically develops a gray, fuzzy mold as the blight progresses and roselike blooms begin turn. Receive enough sunlight, but not direct light receives enough humidity, water tuberous (... Begonia varieties grow into mosaic patterns of varying colors not watering it needed. The main reason why begonia leaves and promotes fungus growth begonias, to! Them to rot and drop s they lose a lot of light likely feed. Petals show brown spots appearing on the leaf itself and the numerous genus of! Active again soil/potting mixture from this stress, you must not keep any begonia begonia stems turning brown.... Typically develops a gray, fuzzy mold as the blight progresses pathogens can infect bird-of-paradise begonia stems turning brown damage the leaves drop! Our site you agree to our with other shade- and humidity-loving plants as! Dead plants and plant parts from the soil becomes stunted, and do not fall below 60 (!