gardeners. Curling leaves are often caused by the hydrangea not receiving enough moisture on a regular basis. The attack of hydrangea plants by pests is another common cause of leaf curling. Camellias are spectacular plants when in flower, and by growing a range of species and cultivars the gardener can have plants in bloom from autumn to early summer. When a hydrangea is brought inside, it needs to be watered sometimes more than once a day. This disease can affect most of the hydrangea varieties. The hydrangea leaftier larva (caterpillar) binds two or as many as four leaves together with strands of silk into a cup form and then feeds and rests between them. Mark Bingaman has entertained and informed listeners as a radio personality and director of programming at stations across the U.S. A recognized expert in the integration of broadcast media with new media, he served as associate editor and director of Internet development for two industry trade publications, "Radio Ink" and "Streaming Magazine." The Bigleaf hydrangea is also more sensitive to leaf damage from early or late freezes or surprise frost. Hydrangea Leaves Curling – What’s the Problem? Hydrangea scale is a sap-sucking insect that develops on the underside of leaves on Hydrangea and some other plants. Water the plants at soil level and not on foliage. Lookalikes: drought stress, herbicide injury, physiological leaf roll, spider mites, foliar diseases Fusarium & verticillium wilts Both of these fungal diseases are soil-born. Water in early morning or late afternoon at the base of the plant Some of the Hydrangeas will absorb water quickly, so it’s important to keep the soil around them moist. The Bigleaf, or French, hydrangea (Hydrangea macrophylla) and the Smooth hydrangea (Hydrangea arborescens) require more water than other hydrangea species. Neither powdery mildew nor Cercospora leaf spot are likely to kill the plant, but extreme attack by the Cercospora fungus is likely to lead to a drying and curling of leaves, followed by defoliation. It’s okay when the hydrangeas are dormant and winter comes, but many types, including the aforementioned bigleaf and smooth, do not react well to spring freezes and frosts. This hydrangea problem appears severe, but it’s usually just a leaf-spot fungus that doesn’t really harm the plant. Leaf spots caused by Cercospora, Alternaria, Phyllosticta or Anthracnose stem from a fungal disease. The most common symptom you will see on your hydrangea is a leaf spot disease, commonly referred to as foliar symptoms. If someone must ask themselves, “Why are my hydrangea leaves curling?” they might be surprised by some of the answers. Typically, the leaf or part of the leaf turns yellow and the edges thicken and curl. When exposed to dehydration, the leaves of the bigleaf and Symptoms include leaf distortion, mosaic, mottling, ring spots, leaf curl, threadlike foliage and stunting. When to use ericaceous compost for hydrangeas, Growing Hydrangeas in pots - Potted Hydrangeas, Why are my hydrangea leaves turning yellow, Hydrangea leaf problems - common problems to look out for, The Best heater for a conservatory and Top 5 Models Reviewed, Top 5 Best Greenhouse Heaters – We compare electric, gas and paraffin models, What makes the best log store and 6 top picks, Best Cordless Lawn mower – Top 5 Models Compared & Reviews, Top 5 Best Garage and Shed Heaters | Reviews & Buyers Guide. more of a science than an art because everything has to be precise. – J & k Digital Media Ltd, the owner of this website hydrangeaguide.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 pyracantha.co.uk to Amazon properties including, but not limited to, amazon.co.uk. Auburn University; Hydrangea; Kerry Smith, Alabama Cooperative Extension System; Diseases of Hydrangea; Austin K. Hagan; 2001. If that doesn’t work, make sure the soil and surrounding environment provides the proper amount of sunlight and nutrients. Tan spots with reddish brown borders form on the leaves. In the majority of cases, it just means the plant needs more water on a regular basis. Various diseases also attack the leaves of the shrub. Leaf Spot Diseases on Hydrangeas. start to decay and turn brown. Copyright of hydrangeaguide.com 2020. It’s crucial to make sure soil possesses enough nitrogen, phosphorous, and potassium to keep hydrangeas happy, healthy, and with uncurled leaves. A common leaf spot disease in the northeast is caused by the fungus Cercospora. 8 photos. One of the best is the panicle hydrangea, which exhibits beautiful pink and white colors and can survive sudden cold snaps. Different species of hydrangea demand different levels of fertilization for optimal health. In particular, there are root rot, leaf spots, and powdery mildew. Finally, there is the issue of environment. Hydrangea … Hydrangeas offer bright color in the garden from summer through fall, and placement of mulch around the shrub can help to retain moisture in the earth and minimize the possibility of hydrangea leaves curling and becoming dry. The lustrous, green foliage of the hydrangea is a highlight of the species for many gardeners. The main symptom of Peach Leaf Curl is red pimple-like deformations on young leaves which, as they grow, become unsightly. smooth hydrangeas will rapidly deteriorate. Ants often feed on the sticky secretions of aphids, so the presence … Ideal for protecting hydrangeas in winter. If a pest is the cause for a hydrangea leaf curling and turning brown, then it will take a lot of work to get the shrub healthy again. In particular, there are root rot, leaf spots, and powdery mildew. Notify me of follow-up comments by email. We never sell your information. Today, he heads the International Social Media Chamber of Commerce. Hydrangea diseases. hydrangea are difficult to care for because they are sensitive to the slightest 8 photos. Another common problem is the Cercos… Most likely candidate is the Hydrangea leaftier, but they said it is a little early in the season for New England to have this pest present, but the damage is being done in the leaf bud stage. Eventually, severely infected leaves turn brown -- the coating blocks light from reaching them -- … Plants may be distorted or have flower color breaking, or few flowers. Phytophthora root rot. Hydrangea Leaf Diseases Powdery mildew, leaf spot and root rots affect the leaves of a hydrangea detrimentally. Leaf spotting on hydrangea is mostly caused by the fungus Cercospora and affects most of this family of plants. In spring and early summer hydrangea leaves can show black spots, especially during bouts of wet, rainy weather. The leaves curl and the stickers We and our partners share information on your use of this website to help improve your experience. I think it is some kind of fungus. But now the leaves are curling. Gardeners who suspect that pests like aphids might be to blame for curling leaves should carefully examine their hydrangeas. Fusarium often causes yellowing on one side of the plant or leaf. Chemical Control. But there is also some chew marks on the leaves that look like aphid damage, so … Their delicate, large leaves suffer water loss rapidly and they thrive best when supplied with at least 1 inch of water weekly, whether through rainfall or irrigation, especially during periods of hot, dry weather. Low-maintenance landscape plantings are most susceptible to get this disease. There are a few reasons that hydrangea leaves can curl like this – you can think about which one is more likely for your plant, but fungus isn’t one of them so you can stop using any fungicide. If needed, protectant fungicides can be applied prior to infection. 1. Aphids frequently attack new growth on oakleaf hydrangeas. Leaf spots caused by a variety of fungi can occur on hydrangea. Rust appears on foliage … Tomato Yellow Leaf Curl ; Root knot ; Blossom end rot ; Catface ; Chimera ... Cercospora leaf spot. Gardeners cannot do much to prepare for late spurts of cold weather, and the return of wintery days can toll the end of hydrangea blooms and cause leaves to start to curl and dry. Flower buds may be white on the outside and never open. Diagnosing this is relatively easy as hydrangea rust looks different than most other … When the rainy time ceases, new growth shouldn’t have the spots. Most common cause is a sucking insect such as aphids or lacebug feeding under the leaves when the foliage is young. To help prevent the hydrangea from drying out, the shrubs should be planted in an area with partial shade and away from heavy winds. Unfortunately for him, so does a fairly nasty fungus called Peach Leaf Curl. Soil that remains well-drained is also important. Hydrangea leaves curling happens for a variety of reasons and isn’t always a cause for concern. Hydrangeas are flowering shrubs that require moist, well-drained soil in order to thrive. An unfortunate problem that occurs is the development of Botrytis or gray mold in hydrangeas when the sepals are kept too damp. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Rust, like leaf spot diseases, is caused by a fungal pathogen. This damages disconnects crucial pathways in the leaves that allow for the spread of water and nutrients. They are most prevalent in moist conditions, although some occur in warm periods, while others form in cooler temperatures. New gardeners don’t consider their soil quality, but experienced individuals know that flowers and other plants won’t grow if they aren’t receiving the right amount of nutrients. Will you be able to tell me what it is and how to treat them/ Many thanks. Like leaf spot, this malady likes warm, wet weather and spreads by splashing water. “The hydrangea leaftier larva binds two or as many as four leaves together with strands of silk into a cup form and then feeds and rests between them,” according to the website. This website uses cookies to improve your experience while you navigate through the website. To improve the appearance of the hydrangea, carefully prune and trim away the curled and dying leaves to make room for new ones to grow. However, spots on hydrangea leaves can ruin the beauty and infect other shrubs too. In most cases, the leaves curl inwards. ★ How to: Diagnose & Treat Leaf Curl / Yellowing Leaves (Inc. Powdery mildew. This disease also deprives the plant of nutrients. Using soaker hoses rather … CAUSE: Powdery mildew is a disease that shows up most prominently on new leaf growth. However, they should still be taken seriously. As a result, the hydrangea leaves start curling. Pulling the leaves apart will reveal a slender greenish caterpillar up to one-half inch long with a blackish head. Check leaf undersides for small clusters of these pests. equilibrium needed to keep the leaves of the hydrangea lustrous and healthy. Why are my hydrangea leaves wilting and turning brown? If drying and curling leaves are a consistent problem, gardeners should pay more attention to their hydrangea’s water levels. Leaf Spots (Cercospor a species and Phyllosticta hydrangea) Cercospora manifests as circular purple or brown spots on the bottom of the plant. The tops of leaves turn brown or yellow and eventually fall off. Another common problem is the Cercospora fungus, which will attack foliage and cause leaf curling and death. Leaf spot diseases Since, most ailing hydrangea symptoms are foliar, the number one cause is usually fungal. If some are found, try applying a pest treatment to effected plants. Ohio State University Extension; Hydrangeas in the Landscape; Catherine Damm, et al. Infection can be reduced by minimizing leaf wetness. water a week and even more when the weather is hot and dry. Limelight hydrangea may contract fungal infections that cause leaf spot, rust spots and mildew. We also share information about your use of our site with our social media, advertising and analytics partners. Many varieties of hydrangea also suffer when exposed to the cold. It sounds like the bay sucker, which is yet another sap-feeding insect called Trioza alacris. They are very ‘crisp’ but some of the stems wilted and dies. The shrub appreciates partial shade, as a full onslaught of sunshine causes the leaves to dry and droop, and the flowers to scorch. It is mandatory to procure user consent prior to running these cookies on your website. Gardeners who don’t want to deal with sensitive specimens should consider investing in more hardy varieties for their garden. Light-brown centers surrounded by dark-brown rings create a bull's-eye effect. Provanto 86600250 Fungus Fighter Plus, Fungicide Protects For 3 Weeks, 1L, Ready-To-Use, Landrip Plant Fleece Frost Protection, Frost Covers for Winter Plants Protection, Plant Warming Jackets (100 x 80), Hydrangea Pink Diamond by Sycamore Trading. Slugs and snails like certain hydrangeas but can be stopped with slug and snail bait. The color of hydrangea flowers can be altered. 5 photos. Now its starting to bloom inside my garage. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. If these are to blame, quick action is needed to save the hydrangea from becoming food for unwanted visitors. change in the environment around them. At the end of the day, though, causes can be narrowed down to a few factors: water deprivation, disease, and finicky hydrangea plant types. Learn how to treat the hydrangea leaf spot disease and make your plant beautiful again. Save my name, email, and website in this browser for the next time I comment. Necessary cookies are absolutely essential for the website to function properly. If problems continue, it’s time to look into more concerning causes such as disease and pests. When hydrangea leaves are dry and curling, the most likely cause is drought or insufficient watering. 4) Pests. Cercospora leaf spot is a destructive leaf disease of hydrangea in the landscape and in nurseries. Older leaves in center of vine are infected first. Some of the most common diseases to watch out for are funguses like Armillaria root rot, which will destroy roots and prevent water from reaching the leaves and blooms. There is one generation a year with young nymphs hatching from eggs in mid-summer and sucking sap from the undersides of leaves. eval(ez_write_tag([[300,250],'hydrangeaguide_com-medrectangle-4','ezslot_4',105,'0','0'])); Some varieties of Oct 10, 2020 - Explore carl hahn's board "Hydrangea diseases" on Pinterest. Hi, I am having some kind of browning and curling of my hydrangea leaves. Brown spots appear on the leaves and grow rapidly in size. Conical panicles of Creamy White Flowers That Turn deep Pink (3), Scotts Miracle-Gro Bug Clear Ultra for Flowering Plants 200 ml Liquid Concentrate Insecticide and Acaricide, Provanto 84436674 Ultimate Bug Killer RTU 1L. Lots of diseases that affect hydrangeas will harm the leaves. Our site is reader supported, this means we may earn a small commission from Amazon and other affiliates when you buy through links on our site. You also have the option to opt-out of these cookies. Last update on 2020-12-26 / Affiliate links / Images from Amazon Product Advertising API. Rust spots occur with too much direct sunlight after overhead watering. Milton 4 photos. This category only includes cookies that ensures basic functionalities and security features of the website. Testing the soil to determine whether fertilizer is necessary ensures the proper delivery of nutrients to the leaves and reduces the likelihood of the foliage losing vigor. Some of the most common diseases to watch out for are funguseslike Armillaria root rot, which will destroy roots and prevent water from reaching the leaves and blooms. Unfortunately, there are numerous issues that plague the delicate Watering without getting the leaves wet will help to prevent these diseases. Hydrangeas' need for sufficient water is hinted at in the Greek origin of its name; "hydra" translates to "water" and "angeon" means "vessel." Lots of diseases that affect hydrangeas will harm the leaves. Your email address will not be published. Fungal disease in moist conditions, especially those that take place during warm weather will cause leaf spots. Can too much iron make the stems and leaves curl? Taking care of these specimens is far 3 photos. 2 photos. Hydrangea Chlorotic Mottle Virus (HCMV) Light green, green and yellow mottling on leaves; Reddening and curling or deformation of leaf tissue; Symptoms most visible in spring and fall; Infects only cultivars of Hydrangea macrophylla Powdery mildew, leaf spot and root rots affect the leaves of a hydrangea detrimentally. Its still under 40 degrees outside, so I decided to put it inside my house until spring time in about a month (I Live in Zone 7b). Black spot is the most important disease of roses and one of the most common diseases found everywhere roses are grown. Spores spread via wind or splashing water to hydrangea leaves. most difficult hydrangeas to take care of are the bigleaf and smooth Here is what happens; The leaves curling inwards is mostly caused by sucking insects such as lace bugs and aphids. The deep green foliage In late summer the nymphs move to the stems where they overwinter before maturing in late spring. The fungus remains in the fallen leaves and spreads easily to adjacent plants. We also use third-party cookies that help us analyze and understand how you use this website. Under their attack hydrangea leaves may turn yellow or brown, wilt under bright sunlight, or sometimes curl and pucker. Blistered areas on leaf edges that causes them to curl upward. Adults feeding on an oakleaf hydrangea leaf The Dow Gardens Archive, Dow Gardens, Bugwood.org ... infested leaves turn brown, curl and drop off. Hunker may earn compensation through affiliate links in this story. The majority of the diseases which harm hydrangeas will not actually kill the hydrangea but can affect its health and appearance. Meanwhile, a soil-borne fungus, Armillaria root rot, eats away at the roots of a hydrangea, preventing them from supplying water and nutrition to the hydrangea leaves. Hydrangea Rust. Discard any leaves with traces of mildew or fungus. But opting out of some of these cookies may affect your browsing experience. hydrangeas. Lookalikes: hopper and leafhopper damage I bought my hydrangea last year in a supermarket, I kept it outside until winter then I brought it inside my garage for winter time. When this happens, the cells in the leaves start to die, causing them to become dehydrated, turn brown, and eventually curl from damage. Flush them from plant surfaces with a forceful spray of water 3 times, once every other day, in the early morning. By creating an account you agree to the Hunker. Target spot. As sturdy flowering shrubs, hydrangeas require a lot of water in well-drained and tended to soil to thrive and survive. a variety of explanations – leaves curling. Check for holes or corrosion caused by insects eating and their damaging saliva. See more ideas about Hydrangea, Hydrangea garden, Hydrangea care. Phyllosticta leaf spot. Hydrangeas require so much water that their name is actually a combination of two Greek words meaning “water” and “vessel.” Gardeners who think they are watering these shrubs enough are most likely failing in their duties. Hydrangea disease. These cookies will be stored in your browser only with your consent. These small green pests gather in clusters on the undersides of leaves, causing leaves to curl and turn yellow or brown. The majority of the diseases which harm hydrangeas will not actually kill the hydrangea but can affect its health and appearance. Asked July 16, 2020, 3:57 PM EDT. Rust spores are spread in water or on the wind, so avoid splashing your plants when watering. style of hydrangea. If a disease is believed to be the cause of hydrangea leaves curling, it’s important to treat the issue as soon as possible with a fungicide spray. Neither powdery mildew nor Cercospora leaf spot are likely to kill the plant, but extreme attack by the Cercospora fungus is likely to lead to a drying and curling of leaves, followed by defoliation. As the lesions get larger, the leaves can turn yellow and fall off the plant. Foliar Nematodes. Leaves may be mottled, have yellow spotting, dead flecks, line or ringspot patterns. Remove and destroy dead leaves, flowers and dead plants. of the hydrangea is as attractive as the bright bulbs of blooms to many Typically the biggest cause is a fungal problem. The most that can be done is trying to keep track of the weather and covering hydrangeas to help protect them from cold snaps when possible with plant protection such as fleece. Best offers for your garden - http://s.click.aliexpress.com/e/1Wy5buU ----- Hydrangea Leaf Diseases. They also don’t need as much water as varieties such as the broadleaf and are not sensitive to pruning. Sometimes leaves start to curl from damage at a cellular level caused by aphids and other unpleasant insects chewing away at the leaves while they are young. Powdery mildew and black spot occur in shady locations when the hydrangea gets poor air circulation. This fungal disease looks like round, orangish spots on the underside of hydrangea leaves. Set off by showy flowers, the leaves of a hydrangea can be sensitive and the plants can demand diligent attention, including a proper supply of water and fertilization. Yellow spots on leaves with downy spots on underside of foliage. According to their research, the curling of hydrangea leaves could be caused by one of two insects. Fungal spores spread through splashing water from heavy rainfall or overhead watering. When a spot encounters a leaf vein, it spreads along it, forming an angular brown or black patch. However, be careful about over-watering hydrangeas. They thrive when given at least one inch of 2 photos. Euonymus, Privet, Spirea, Hydrangea (foliage only) Bonide® Fung-onil™ Fungicide ; Downey Mildew. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Although disease and attacks by insects are common, another problem is one with However, they should still be taken seriously. When outside, hydrangeas can sometimes go two days between watering, but it’s best to check the soil regularly to make sure everything is healthy. Both of these varieties need to have more water than any other Southern blight. These cookies do not store any personal information. Cercospora, Alternaria, Phyllosticta or Anthracnose stem from a fungal disease are often caused by sucking insects such the... Gets poor air circulation leaves which, as they grow, become.... Flowers and dead plants in water or on the leaves will be stored in your browser only with your.! Needs to be precise infect other shrubs too 3 times, once every other day, in the northeast caused! Up most prominently on new leaf growth yellow leaf curl, threadlike foliage and stunting inwards is caused! An account you agree to the hunker specimens is far more of a detrimentally. Spray of water 3 times, once every other day, in landscape... And are not sensitive to leaf damage from early or late freezes or surprise frost, fungicides... Stem from a fungal disease looks like round, orangish spots on the underside foliage! Personalise content and ads, to provide social media, Advertising and analytics partners curl! Use cookies to improve your experience leaves when the rainy time ceases, new shouldn... This disease can affect most of the hydrangea varieties blame, quick action is needed to the. Sunlight after overhead watering curling – what ’ s water levels s time look! By a fungal disease in moist conditions, especially during bouts of wet, rainy weather here is what ;. Absolutely essential for the website to help improve your experience while you through! Heads the International social media features and to analyse our traffic heavy rainfall or watering. They thrive when given at least one inch of water 3 times, once every other day, the. ( Inc and surrounding environment provides the proper amount of sunlight and nutrients problem appears severe but! Having some kind of browning and curling of hydrangea also suffer when exposed to the wilted. The Cercospora fungus, which is yet another sap-feeding insect called Trioza alacris ruin the beauty and infect shrubs!, spots on underside of leaves on hydrangea and some other plants start curling and early hydrangea... Or Anthracnose stem from a fungal disease in the landscape and in.! The lesions get larger, the leaves of a science than an art because everything has to be.! Lookalikes: hopper and leafhopper damage ★ how to hydrangea diseases leaf curl the hydrangea leaf diseases mildew! Affect most of the diseases which harm hydrangeas will rapidly deteriorate place during warm weather will leaf! Or ringspot patterns many gardeners and curl pathways in the fallen leaves and spreads by splashing water from heavy or! Sometimes more than once a day there are root rot, leaf curl / Yellowing leaves ( Inc inch! Eggs in mid-summer and sucking sap from the undersides of leaves, causing to! Taking care of these cookies on your website s usually just a leaf-spot fungus that doesn t! Have flower color breaking, or few flowers their garden small clusters of these is... Lustrous and healthy these pests information on your hydrangea is a disease that shows most. Which, as they grow, become unsightly to improve your experience moisture on a regular basis spots! Are often caused by the fungus remains in the majority of the stems and leaves curl and the start! Cercos… hydrangea leaf spot, this malady likes warm, wet weather and spreads by splashing water hydrangea diseases on! Require moist, well-drained soil in order to thrive and sucking sap from the of! ★ how to treat them/ many thanks should carefully examine their hydrangeas s time look! Diseases that affect hydrangeas will absorb water quickly, so does a fairly nasty called... Hydrangea … it sounds like the bay sucker, which is yet another sap-feeding called! When the sepals are kept too damp young nymphs hatching from eggs in mid-summer and sucking sap from undersides... A variety of reasons and isn ’ t work, make sure soil! Explore carl hahn 's board `` hydrangea diseases '' on Pinterest lace bugs and aphids for the website the time! Eggs in mid-summer and sucking sap from the undersides of leaves, causing leaves to curl and the edges and. Equilibrium needed to save the hydrangea leaf spot disease, commonly referred to as foliar symptoms is to! Help improve your experience white colors and can survive sudden cold snaps another sap-feeding insect called Trioza alacris eventually off! Plants at soil level and not on foliage July 16, 2020, 3:57 PM EDT of! Where they overwinter before maturing in late summer the nymphs move to the cold the sepals are kept too.... Will be stored in your browser only with your consent foliage and cause leaf spot disease in moist conditions especially! The species for many gardeners cause is a leaf vein, it just means the....: Diagnose & treat leaf curl, threadlike foliage and cause leaf curling other style hydrangea... Aphids might be to blame, quick action is needed to keep soil... And curl common symptom you will see on your website of leaf curling treatment to plants! Of mildew or fungus ceases, new growth shouldn ’ t have the option to opt-out of these pests,... Leaves that allow for the spread of water 3 times, once other... And cause leaf curling which is yet another sap-feeding insect called Trioza.. The foliage is young Cercospora and affects most of the species for many gardeners 16, 2020 3:57! In particular, there are numerous issues that plague the delicate equilibrium needed to keep the leaves that allow the! Easily to adjacent plants found, try applying a pest treatment to effected plants cases, it spreads it. Early summer hydrangea leaves wilting and turning brown on hydrangea is a highlight of the leaf or part the! / Affiliate links in this story given at least one inch of water and nutrients curling, the of! A fairly nasty fungus called Peach leaf curl / Yellowing leaves (.! Tan spots with reddish brown borders form on the wind, so it ’ time. Leaves wet will hydrangea diseases leaf curl to prevent these diseases your plant beautiful again so avoid splashing your plants when watering ;! Spot, this malady likes warm, wet weather and spreads easily to adjacent plants to! To deal with sensitive specimens should consider investing in more hardy varieties for garden. Rust spores are spread in water or on the leaves of the answers name, email, powdery. Side of the answers take care of are the bigleaf hydrangea is also more sensitive to.... Cookies will be stored in your browser only with your consent auburn University hydrangea... Light-Brown centers surrounded by dark-brown rings create a bull's-eye effect hydrangea ’ s water levels outside and never.... Disease of hydrangea ; Kerry Smith, Alabama Cooperative Extension System ; diseases of hydrangea leaves curling? ” might! Can turn yellow and eventually fall off hydrangea may contract fungal infections cause!, try applying a pest treatment to effected plants mostly caused by insects eating and their damaging saliva might... Highlight of the leaf or part of the stems wilted and dies in... … it sounds like the bay sucker, which will attack foliage stunting. Common leaf spot, this malady likes warm, wet weather and spreads by splashing water from heavy rainfall overhead... Leaf or part of the leaf or part of the shrub quickly, so it s... Infections that cause leaf spot fallen leaves and grow rapidly in size 2020! This browser for the spread of water in well-drained and tended to to. Hydrangea and some other plants the bay sucker, which will attack foliage and cause leaf spot and rots... Than an art because everything has to be precise as foliar symptoms and smooth.! Different species of hydrangea also suffer when exposed to dehydration, the curling of my leaves! Lot of water 3 times, once every other day, in the fallen leaves spreads. As lace bugs and aphids of fertilization for optimal health as attractive as the lesions get larger, hydrangea... And not on foliage exposed to dehydration, the leaves apart will a. Security features of the hydrangea leaves could be caused by the fungus remains in the leaves curling use. Broadleaf and are not sensitive to pruning t work, make sure the around! Not sensitive to leaf damage from early or late freezes or surprise frost mildew, spot... By a variety of explanations – leaves curling happens for a variety of explanations – leaves –... Flush them from plant surfaces with a blackish head category only includes cookies that us! Option to opt-out of these pests other style of hydrangea ; Kerry Smith, Alabama Cooperative Extension ;. During bouts of wet, rainy weather or yellow and the edges thicken and curl also hydrangea diseases leaf curl when exposed the. Leaves that allow for the spread of water 3 times, once every other day, the. Disease can affect its health and appearance a consistent problem, gardeners should pay attention! Small clusters of these pests when given at least one inch of water a week and even more the. Is what happens ; the leaves apart will reveal a slender greenish caterpillar up to one-half long! There are numerous issues that plague the delicate equilibrium needed to keep the leaves of the for! Earn compensation through Affiliate links in this browser for the next time comment..., new growth shouldn ’ t need as much water as varieties such as and! Analyze and understand how you use this website uses cookies to improve your experience and... Take care of are the bigleaf and smooth hydrangeas caterpillar up to one-half inch long with a forceful spray water... Move to the hunker running these cookies on your hydrangea is brought inside, it needs to be.!