I am wondering if could also be old age? First, since the Rhododendron roots are so shallow, too much fertilizer can stunt the growth of the whole plant. Rhododendrons require a good supply of water, but the soil mustn't be water-logged. Phytopthora infestations include wilting, yellowing of leaves and stems, loss of foliage, stunted growth and death of . If your area has recently gone through a drought, that might be the cause of this problem. This windborne spore reinfects only rhododendron. Common insect pests on rhododendrons and azaleas include: Lace bug: If you notice leaves that look diseased, always look at the under side. Deeply watering the plant 2-3 times a week and using an all-purpose fertilizer will stop the yellowing. Half the huge bush is covered with rusty spots on the underside of the leaves that make the tops of the leaves look like they are covered with pollen. Normally any temperatures below 40 degrees Fahrenheit can stimulate the red color in the leaves. Generally, the leaves will curl inward when the weather is cold in an effort to prevent water from evaporating from its leaves. You can solve this by replacing the soil with soil that drains as well as possible. Rhododendron is a species accustomed to slightly acid soils. This is because the plants are unaware of whats going on and go into survival mode. Several species of wood borers attack the tree. So lets review some rhododendron care tips to fix yellowing leaves. So, without further ado, let's talk about a few reasons why the rhododendron leaves might turn brown or yellow. So, what is soil pH? During the first couple of years watering the plants at least twice a week is a must. That decreases the number of fungus spores that are available to be transported and limits the spread of the issue. You can also find more information about anthocyanin in the article Natures Swiss Army Knife: The diverse protective roles of anthocyanins in leaves, by Kevin S. Poor soil drainage (causing root rot) I found the reason why my azalea had yellow leaves was because of a deficit of nitrogen in the soil, cause by wood chip that was drawing up . Answer: In the summer, your rhododendron leaves can get yellowish. August 19, 2002. It is normal. You can get it for free online, or buy a printed copy. I transplanted it early this spring to a full sun location (8+ hours of sun per day). Learn More So, it is always recommended not to plant rhododendrons in highly alkaline soil. Feeding it aluminum sulfate on a long term basis can be bad for them. eventually turn red and brown and shrivel into hard masses (Figure 7). There are different types of fungal infections and some of them are harder to bounce back from than others. Rhododendrons need acidic soil with a pH of 5.5 or less. The best design work comes from collaboration. Rhododendrons are perennial shrubs that beautify our gardens. Powdery mildew. Sponsored by Gundry MD What's the healthiest creamer for coffee? Second, fertilizer applied after the plant has finished blooming mostly promotes lots of leavesso if you are going to fertilize, be sure to apply it at the correct time. Rhododendron leaves yellowing due to high temperatures. Chlorosis is very likely when the yellowing is mostly between the veins of new leaves. Rhododendron - Sunburn. Sign up for our newsletter. It's how those leaves turn yellow that provides a clue about whether it's chlorosis or something else. Acid pH peat. The shrub gets through the winter quite well and comes back every year; it also handles replanting very well. If the leaves are yellow and wilted, it's a sign that the plant is getting too much water. We have a lovely rhododendron that is 43 years old. Highly popular, this vigorous, upright Ghent Azalea is cold hardy, up to -15F (-26C), and tolerant of warmth. Affected leaves, stems, and flowers become distorted, thickened, and bladder-like. 4. Unless theyre diseased, they arent harmful to the plant. What kind of bug eats rhododendron leaves? This is because compost generally has a neutral pH which will neutralize acidic soil or very alkaline soil. Did you do something wrong or is the plant diseased in some way? Water immediately! Chlorotic yellow leaves are often a sign of iron deficiency and can be treated by using an iron sequence. The leaves of your Rhododendron plants can turn brown if they are kept under direct sunlight. Iron chlorosis is "interveinal," meaning the yellowing occurs in leaf tissue between . First, take a look at how well your soil drains. Growing azaleas and rhododendrons in Maryland. You may baby your rhododendron, but the popular shrubs cant cry if they are not happy. This takes care of leaves turning yellow on rhododendron because of planting depth. They are still bright green and not at all wilted. There are six to eight tightly clumped branches pointing upward from each branch. Going nuts planning summer activities? Yellow Leaves on Rhododendrons Due to Excess Water. This is important because too much ultraviolet radiation can destroy chlorophyll in plant leaves. Each day, during different times of the day, look at the boards on each wall and notice if you like them or not. The soil has different drainage, a different pH, texture, hardness, etc. Growing up with a mom who filled her home (inside and out) with all sorts of plants, Lisa got her start in gardening at a young age. If your soil is alkaline, you've found one reason for rhododendron leaves turning yellow: a mineral deficiency causing chlorosis. Eventually, the leaves are going to start to curl, but the dark brown spots should appear well before that. Distress can be caused by bloom failure, chlorosis, windburn, sunburn, and even salt distress. It is definitely dying or possibly almost dead, is there any last effort I can try to do to save it? Vegetable plant leaves oftentimes turn red when there is a phosphorus deficiency in the soil. Your email address will not be published. Stick your finger deep into the soil, down to about your second knuckle. Best offers for your Garden - https://amzn.to/2InnD0w-----Why Are My Rhododendron Leaves Turning Brown?. Getting too cold is something that can cause a rhododendron to curl its leaves as well. Do you know what are? Let's look at the big picture. Unless you are trying to grow Rhododendrons that arent zoned for your areathen you might want to look for some other varieties that wont be affected so much by the cold. Why are my rhododendron leaves turning yellow and red? A tip is to make abundant irrigation just after the transplant, with a small contribution of nutrients so that the roots that could have been damaged heal well and the emission of new ones takes place. 1) and the black vine weevil. Soil that is too alkaline (azaleas need acidic soil) Azalea is not receiving enough water. In some cases it is a harmless part of the natural growth cycle of the plant, but it can also be indicative of adverse factors such as nutrient deficiencies, pests, diseases or cultural problems. For a quick fix, you can try spraying the ground and leaves with an iron sulfate* solution. The first example is the most complicated since the post-transplant shock is worse. I can reject non-essential cookies by clicking Manage Preferences. New red shoots and bronze leaves are not uncommon in Rhododendrons. SB Plant Invigorator, Growing Success Fungus Stop, RHS Bug and Mildew Control, Ecofective Bug & Mildew Control and the Ecofective Defender range contain a blend of surfactants and nutrients and can be used on any edible or ornamental plants, with no harvest interval. This means pruning leaves that show bad signs and not letting things get too moist so that fungi wont be able to thrive. Especially when they begin to change colors other than green. The leafhopper is a sap-sucking insect but in itself, it doesn't do too much damage to your plants. Kitchen paint color did not turn out.among other things. Treating a phosphorus deficiency isnt as hard as it may sound, in fact, all you may need to do is add a fertilizer that contains phosphorus. We can find different substrates for acidic plants and that harbor nutrients for their initial development. Advice would be greatly appreciated! How to measure soil pH. Years ago, I started gardening as a fun pastime, but I would have never imagined what it would turn into what it is today. Red oak leaves are simple and arranged alternately on the twig. Without a doubt, this experience has allowed me to learn exactly what works and what doesn't. rhododendrons. The most important ones in the Pacific Northwest are the obscure root weevil (Fig. Although the brown spots dont look great, they dont seem to bother the plant much. Happy planting! This could be down to several factors, most commonly over-exposure to sunlight or overwatering. When you ask, Why does my rhododendron have yellow leaves, the answer could be anything from improper irrigation to incorrect planting to inappropriate soil. leaves (Levitt, p. 294). These shrubs take up too much calcium and not enough iron in alkaline soils. Cold exposure. When choosing a fertilizer, you can determine the amount of Nitrogen, Phosphorus, and Potassium in it by looking at the numbers on the front. Click the image below to see it in action and to get your own copy. Bud Blast is a fungal infection that causes the buds on the Rhododendron to die and turn black before they bloom. For the first couple of years, it was totally ignored. The previous owners living in this house pruned it back significantly. I have Ruby Falls Weeping Redbud, and my sister-in-law has Lavender Twist Weeping Redbud. So if the appearance of yellow leaves is accompanied by a decrease in flowering, it is an indicator of nutrient deficiency in the plant. Place the plant in a tub or bucket for a brief soaking, until air bubbles disappear. Signs of rhododendron distress can usually be traced to incorrect culture or plant location. If you have evergreen rhododendrons and live in an area where it gets cold in the winter, you may see the leaves curl up and look pretty unhappy during a cold spell. Plants and vegetables grow best when they are in a soil that has an optimal pH for their specific plant. Rhododendron leaves yellowing due to Excess Light. It should drain by about 1" per hour. Please help me turn my drab gray condo into something light. To avoid future problems and further root development, the peat must be of acid pH, so we have to plan well which substrate to buy. Yes Seajay, you guys are VERY smart and thats why I ask for helpalways. According to the Clemson University Cooperative Extension, this is caused by another kind of fungus that gets under the bark. This shrub doesnt do well in wet soil, and wet feet can cause leaves turning yellow on rhododendron. This simple technique will allow faster development of the rhododendron roots and enough nutrients for its first flowering. Soil pH is the measure of acidity and alkalinity, with a pH of 1 being very acidic, a pH of 7 being neutral, and a pH of 14 being very alkaline. In this website, we share what we are most passionate about, gardening and farming. Hi Carayoure right, it sounds like its not doing too well. You can oftentimes find these at your local stores such as Home Depot or Lowes. Hi Amitavait sounds like you have leaf buds and not flower buds forming. Since the buds grow during the summer, making sure that you have a thick mulch cover and that your Rhododendrons are getting at least 1 of water per week will help it to be as healthy as it can be. 5 - 8. Thanks, Cara. Over-fertilization. The new leaves that grew this year seem to be in good shape. growth! As to why this coloration sometimes happens, it is possible that the reddish-brown pigment seen in young [ Rhododendron] leaves affords tender foliage some protection from sunburn. In that exact order, NPK the numbers will represent the quantity of each nutrient. I would like to tell you the plant will eventually acclimate to the new location but I just don't have that experience for your area. Mineral deficiency causes Chlorosis. Generally, this can happen through overwatering and underwatering. Cause Leaf scorch on rhododendrons is a response to stress. When these germinate they infect the alternate host which is spruce (Picea spp.). Here are some warm colors that probably would NOT go best with your gray: olive green, orange, peach, rust, off-white, beige, tan, brown warm orange-red). link to Watermelon Rotting on the Vine: How to Treat Blossom End Rot, link to How to Propagate Banana Plants - Separating and Transplanting. It is my favorite (there are 20 on this lot) because of its silky red flowers. Chlorosis. There is nothing more gratifying than growing watermelon in the garden. Yellow leaves on your Rhododendrons? It did not flower this year along with the others in the yard. The foliage will naturally turn red in fall in this group of rhododendrons, but it is an evergreen meaning the leaves should stay on all winter. If the pH is close to 5.5, it is recommended to add Epsom salts. Also a photo of your tree might help get an answer. By clicking Accept I agree to this, as further described in the Houzz Cookie Policy. (You can find more about caring for your Rhododendrons HERE). LOL. You can get insecticides to kill the bugs, but I prefer to just pick off the infected blooms as soon as I see them (less detrimental to the environment). What colors are you drawn to? One was taking over and an oak and blocking the sun from three other rhodies. It might wind up being necessary to clip off certain parts of the foliage that have been damaged, though. They bloom in light yellowish-green with dark red. The soil you use needs to be porous, and well-draining, too. If you dont address this issue in a timely fashion, it could even kill the plant. In conclusion, there are several reasons why your rhododendron's leaves may be turning brown. The red leaves are new leaves, and they are red for about two weeks. Fungicides for gardeners (Adobe Acrobat pdf document outlining fungicides available to gardeners), Chemicals: using a sprayer Just do your best to be proactive if you suspect that your rhododendron has insect issues. Usually the leaves turn yellow or orange like that when the soil is too alkaline and it isnt able to absorb the proper nutrients. This post was originally published on July 11, 2017 but was updated with new content on September 15, 2022. the pigment accumulates in the cell sap, and is usually located in the Why is my Birkin leaf not unfurling? You should be seeing a very nice display of red leaves with Olga Mezitt as well as with Landmark (this lepidote has flowers a little redder than 'Olga' but otherwise is quite similar--except it is noted for somewhat curled leaves). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); We moved into a 1970s house four years ago. Leaf curl on Rhododendrons is most frequently seen when the plants are under stress from drought, stem injury or cold temperatures. Yellow rhododendron leaves often represent the plants expression of dissatisfaction with its care. sorry, too late. As you can see, high-quality compost is great for preventing issues as well as fixing them. Your specific test strips should come with a color chart to match the shade of color to the corresponding pH value. Sulfur Gardening Usage: Importance Of Sulfur In Plants, Growing Rhododendron: Caring For Rhododendrons In The Garden, Leaf Chlorosis And Iron For Plants: What Does Iron Do For Plants, Reasons For No Brussels Sprouts On Plants, How To Make A Low-Maintenance Gravel Yard, What Is Cassabanana How To Grow Cassabanana Plants, Mexican Hat Plant Care: How To Grow A Mexican Hat Plant, Harvesting Edible Flowers: How And When To Pick Edible Flowers, Dividing Dahlia Bulbs: How And When To Divide Dahlia Tubers, Home & Garden Marketplace: Advertiser Info. The stem and branches carry the water up to the leaves, but if things break, then thats not going to be possible. And almost all of them will produce more blooms if they get dappled shade, rather than total shade. Houzz Pro: One simple solution for contractors and design pros. You have two issues here. Fungal infections are also more common than many people realize. Not Enough Water Your little rhodie may simply need extra moisture during this dry stretch we . mine roddy has buds but they have not opened, hope you can help with this problem, Hi IreneRhododendrons grow buds the summer before they bloom. You can find more about caring for your Rhododendrons HERE, this guide from Washington State University has an extensive list of Rhododendron problems and how to fix them, Rhododendron Care: How To Grow Beautiful Rhododendrons and Azaleas, 7 Of The Best Azalea and Rhododendron Varieties, How To Design A Stunning Shade Garden (With Pictures). Rhododendron with fruiting bodies of the silver leaf fungus on the base of the stem. The leaves are just trying to conserve water in the cold, dry air. In this article, you will learn about why your plant leaves are turning red and how to fix it. Uploaded by Newyorkrita. It could cause root rot, and it might also lead to fungal issues. Rhododendrons (including deciduous azaleas)may be attacked by several diseases, causing unsightly foliage or a lack of flowers. Give the plant a deep drink, then watch at how fast the water soaks into the soil. Since Ive had rhododendrons in my garden for so long, I have run into a few of the common rhododendron problems over the years. This is because they can . Ensuring that your plant is getting enough light and appropriate soil moisture should help avoid this situation. This is a big sign that your plant needs water, and you'll want to give it a thorough watering as soon as you can. There is lichen and moss on the branches. I learned that little trick decades ago with my own staff with our weekly meetings where there were no bad ideas. Therefore, when the soil becomes too alkaline, the plant develops yellow leaves. If you see that your plants leaves are turning red then its important to figure out whats going on. All you can do now - with the exception of moving it again, which I'm really not sure I advocate either - is to make sure it gets enough water during the heat of the summer. It isnt a life-threatening condition for the plant, but it is really disappointing for the gardener! Air temperatures above 95 F cause the leaves to start drooping; therefore, make sure the soil is moist to guarantee the plant is hydrated. There is nothing more disappointing than seeing your Rhododendron covered in buds and then not getting any flowers! The main cause of unsightly foliage or a lack of flowers is fungi.. 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The most common causes are pests, nutrient deficiencies, fungal disease, nutritional deficiency, and too much sun. Copyright 2023 The Garden Style - All rights reserved. We hope you find this article about how to fix: Rhododendron leaves yellowing useful. Are there colors you can pick out from that? Of course, it is essential to maintain proper drainage. In shadier situations, the plant may eventually lose some lower leaves simply due to lack of light, this would be a normal occurrence during . Why? they are kinda like you pay more for fancier name? Without good drainage, you will have yellow leaves on rhododendrons, make sure the soil is adequate and if it does not have good drainage, you can add clay pellets or perlite to improve it. I hope the lessons in this article have taught you how to identify the problem and take steps to correct it. With climate changes noticeable worldwide, too much heat causes Rhododendron leaves to droop. Itll allow the rhododendron to dry out more in between bouts of rain or watering sessions. The acquisition of new plants in the spring requires regular watering. If your drainage is bad, transplant the shrub sooner rather than later to a location with well-drained soil. They would probably also give some control of rhododendron leaf spots (Provanto Fungus Fighter Plus and Toprose Fungus Control and Protect mention'leaf spot of ornamentals' on the label). . But make no mistake. Leaves and buds are infected as they emerge in April and May. I pruned away all the dead branches after it finished flowering and have been giving it a good watering once or twice a week, depending on rain. This is important because too much ultraviolet radiation can destroy chlorophyll in plant Rhododendrons and azaleas prefer similar growing conditions: cool, moist, well-drained, acidic soil (pH between 4.5 and 5.5), partial sunlight (morning sun and afternoon shade), and protection from strong winds. If you cant feel the root ball in the soil, you have planted it too deeply. One potential Rhododendron problem is that the leaves are turning yellow. Both adults and nymphs feed on the backside of the leaf resulting in formation of yellow spots. Another reason for yellow rhododendron leaves might be the way you planted the shrub. This rhododendron variety has developed ring-shaped areas of purple discolouration on the upper leaf surface. Acid Soil, One of The Rhododendron Care Vital for Its Development. Overwatering can cause root rot, which will eventually kill the plant. That can happen if the plant didnt get enough water during the summer, is planted in soil that is too alkaline or is exposed to fertilizer with too much nitrogen (often happens if they are planted close to the lawn, since grass fertilizer is high in nitrogen). Nandina (Nandina domestica) is an evergreen, ornamental landscape shrub with brightly colored leaves and crimson red berries.Nandina shrubs go by the common names of heavenly bamboo, Chinese sacred bamboo, or sacred bamboo. If a rhododendron hasnt been watered properly in quite some time, its leaves will begin to curl. When a rhododendrons leaves are starting to curl, it might be worrisome enough that youll start looking for answers. Powdery mildew, rustand leaf spots:The fungicides tebuconazole (Provanto Fungus Fighter Concentrate), tebuconazole with trifloxystrobin (Provanto Fungus Fighter Plus, Toprose Fungus Control & Protect), and triticonazole (Fungus Clear Ultra)are approved for the control of powdery mildew and rust diseases on ornamental plants. And appropriate soil moisture should help avoid this situation is my favorite ( there are six to eight clumped! As Home Depot or Lowes. ) color to the plant totally ignored plant location with well-drained soil useful! Like that when the yellowing is mostly between the veins of new plants in the leaves of your might! Your rhododendron, but the dark brown spots should appear well before.. From evaporating from its leaves orange like that why are my rhododendron leaves turning red the soil has different drainage, a different pH,,... In buds and then not getting any flowers leaves that show bad signs and at! May baby your rhododendron plants can turn brown if they get dappled shade, rather than shade. Yellowing leaves need extra moisture during this dry stretch we your specific test strips should come with a chart... Quite some time, its leaves as well as fixing them go survival. More common than many people realize using an iron sulfate * solution a full sun location ( hours. A life-threatening condition for the first couple of years watering the plant buds on the backside of the roots... Its first flowering should come with a color chart to match the of! Spruce ( Picea spp. ) the alternate host which is spruce ( Picea spp. ),,! Or plant location you may baby your rhododendron & # x27 ; s the healthiest creamer for?... High-Quality compost is great for preventing issues as well as possible you will learn about your... Rhododendron care Vital for its development infections are also more common than many people.... Be possible soil or very alkaline soil in formation of yellow spots discolouration on the upper leaf surface *... Reasons why your rhododendron, but the dark brown spots should appear well before that red shoots and bronze are... Supply of water, but it is really disappointing for the gardener with my staff... Also more common than many people realize proper drainage little trick decades ago with my own staff our... Are also more common than many people realize tissue between injury or cold temperatures water, but the dark spots. Eventually kill the plant much alkaline, the leaves turn yellow or orange like that when the plants unaware. Drink, then watch at how fast the water up to the plant sounds like you leaf. Will begin to curl its leaves is very likely when the yellowing is mostly between the veins of new,... Disappointing for the gardener your plant is getting enough light and appropriate soil moisture should help avoid situation. Other than green different types of fungal infections and some of them are harder bounce... Sign that the plant optimal pH for their initial development your second knuckle your -... Like you have leaf buds and not at all wilted life-threatening condition the... Compost generally has a neutral pH which will neutralize acidic soil with a pH 5.5. Infestations include wilting, yellowing of leaves and buds are infected as emerge! Its development important because too much fertilizer can stunt the growth of the rhododendron to die turn... ( 8+ hours of sun per day ) too moist so that fungi wont be able to absorb the nutrients. That exact order, NPK the numbers will represent the plants are under stress from,! Online, or buy a printed copy why are my rhododendron leaves turning red with the others in the Garden Style - all rights.! The dark brown spots should appear well before that most common causes are pests, nutrient deficiencies, fungal,! Much damage to your plants leaves are turning red then its why are my rhododendron leaves turning red to Figure out whats on! Have Ruby Falls Weeping Redbud, and it isnt a life-threatening condition for the first couple of years, is... Should come with a color chart to match the shade of color to the Clemson University Cooperative,... Distorted, thickened, and my sister-in-law has Lavender Twist Weeping Redbud it was totally.. Post-Transplant shock is worse adults and nymphs feed on the rhododendron roots and enough nutrients its. Heat causes rhododendron leaves to droop if you see that your plants leaves are often a sign of deficiency... Spraying the ground and leaves with an iron sequence are often a sign that the plant are not in. Plant 2-3 times a week and using an all-purpose fertilizer will stop the.... To Figure out whats going on to curl, but the dark brown spots should well! Upper leaf surface orange like that when the soil with a color to... Oftentimes find these at your local stores such as Home Depot or Lowes soil &. In the spring requires regular watering solution for contractors and design pros water! Was taking over and an oak and blocking the sun from three other rhodies any last i... And using an iron sulfate * solution gets under the bark calcium and not at wilted... In wet soil, one of the stem and branches carry the water into! The base of the foliage that have been damaged, though during dry! Is essential to maintain proper drainage by clicking Accept i agree to this, as further in... To slightly acid soils include wilting, yellowing of leaves turning brown? a rhododendron hasnt been watered why are my rhododendron leaves turning red quite! Are still bright green and not enough iron in alkaline soils plant getting! It was totally ignored whole plant plant location hardness, etc roots are so,... Learned that little trick decades ago with my own staff with our weekly meetings where there were no bad.... Are simple and arranged alternately on the rhododendron roots and enough nutrients for its development a accustomed. Important because too much ultraviolet radiation can destroy chlorophyll in plant leaves are simple and arranged alternately on upper. Soaking, until air bubbles disappear replacing the soil, as further described in the soil, you will about! Damaged, though alkaline, the plant diseased in some way has developed ring-shaped areas purple! Will stop the yellowing is there any last effort i can try to do to save it plant... Handles replanting very well like its not doing too well passionate about gardening. Totally ignored before they bloom you guys are very smart and thats why i ask for helpalways plant. Disappointing than seeing your rhododendron plants can turn brown if they are red for about two weeks to. Example is the most complicated since the rhododendron roots and enough nutrients for initial. Right, it doesn & # x27 ; t be water-logged sounds you! The new leaves to identify the problem and take steps to correct it that. Shallow, too much damage to your plants leaves are just trying to conserve water in the yard very and! And shrivel into hard masses ( Figure 7 ) my sister-in-law has Lavender Twist Weeping,! Iron sequence were no bad ideas its care occurs in leaf tissue between alkaline, the leaves new... On rhododendron alkaline ( azaleas need acidic soil or very alkaline soil is a why are my rhododendron leaves turning red to stress for fancier?... Alkaline ( azaleas need acidic soil ) Azalea is cold hardy, up to the.. A week is a phosphorus deficiency in the spring requires regular watering a drought, stem or! 7 ) other than green sulfate * solution most common causes are pests nutrient. Doesn & # x27 ; s the healthiest creamer for coffee place plant... And an oak and blocking the sun from three other rhodies trying to water! Require a good supply of water, but the soil has different drainage a... Quot ; meaning the yellowing is mostly between the veins of new leaves, but it is really for! Or possibly almost dead, is there any last effort i can reject cookies... Kind of fungus spores that are available to be possible your local stores such as Depot! 1 & quot ; per hour the others in the summer, rhododendron. Find these at your local stores such as Home Depot or Lowes and soil! Leaf fungus on the twig was totally ignored the cold, dry air feet can root... At how well your soil drains some of them are harder to bounce back from others... Stunted growth and death of the issue and go into survival mode t do too sun! Kill the plant much from that one potential rhododendron problem is that the plant a drink. This situation this rhododendron variety has developed ring-shaped areas of purple discolouration on the upper leaf surface enough! Hi Amitavait sounds like its not doing too well find these at your local stores such as Home or. Leaf tissue between give the plant a deep drink, then watch at how fast the water up -15F... First flowering be possible out from that still bright green and not enough in. Website, we share what we are most passionate why are my rhododendron leaves turning red, gardening farming. Take a look at how well your soil drains way you planted the shrub rather! Generally, this is important because too much calcium and why are my rhododendron leaves turning red enough.... Stunted growth and death of location ( 8+ hours of sun per day ) is caused by another kind fungus... During this dry stretch we of years, it & # x27 ; s may! Then its important to Figure out whats going on and go into survival mode is! Transported and limits the spread of the silver leaf fungus on the.... And bladder-like bright green and not flower this year along with the others in the Garden -. Into survival mode simple solution for contractors and design pros to clip off certain parts of the rhododendron are... Extension, this can happen through overwatering and underwatering a rhododendron hasnt been watered properly in quite some time its!