Notify me of follow-up comments by email. Destroy the leaves and plant debris collected in the bin- preferably by burning to kill the fungi. Brown Spots on Hydrangea Leaves: Causes + Fixes for Leaves Turning Brown. Remove plant debris and dropped flowers from under your hydrangeas. Wear a pair of gardening gloves and grab a pair of pruners. This includes minimizing the amount of water that comes into direct contact with your hydrangea foliage during irrigation/watering. If you are able to, give your shrubs at least six feet of space between one another. These cookies will be stored in your browser only with your consent. So, it can focus on growing new leaves and flower. Is it possible the leaves were sun damaged and look that way? To stop this, use a garden hose pipe to water-flush/dislodge the ants from your hydrangea foliage. ��� D.B., Houston. There are several reasons why hydrangea blossoms turn brown, and one of the most common causes is that the plant does not get enough water, according to Hyannis Country Garden. Why are my hydrangea leaves turning yellow - Hydrangea Guide It’s also not uncommon for pests like aphids to attack hydrangea foliage and cause leaf browning. I am a web geek, but you won’t believe how much I love gardening and connecting with nature. I’ve been trimming the affected leaves off the plants. Apply brown paint in the same way. "If it's a repeat bloomer, adjust care accordingly and try to delay browning on the second flush of flowers." They look like tiny red or brown specks, they move when touched, and they build tiny webs. These will result in your leaves shrivelling up and turning brown. Purple Leaf Color On Hydrangeas - What To Do For A Hydrangea ��� Copyright of hydrangeaguide.com 2020. – 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. First, you want to take preventative measures by keeping water off of your hydrangea leaves whenever you water your shrubs. Tangentially before you go out to prune anything, disinfect your pruners using a household disinfectant or a mixture of 9 parts water to 1 part bleach, then rinse in a solution of household dish soap and water. First, you want to take preventative measures by keeping water off of your hydrangea leaves whenever you water your shrubs. She thought it was dying, but it came back fine this year. If you see the roots are compact, woven together, soak the root ball in water and then carefully loosen the roots with your hand before you plant them. A: Hi Melissa, You might want to check your hydrangeas for spider mites. Hydrangea petiolaris leaves turning brown ��� BBC Gardeners' ��� The herbicide droplets leave brown leaf spots on the parts of the hydrangea foliage that they come into contact with. Remember that hydrangeas prefer moist soil so you should water them regularly. Leaf tips and margins may turn brown, as well. This is usually caused by peat moss-laden soil mixes, which is common whenever you buy potted hydrangea plants from a nursery. | Hunker Most hydrangea species don’t transplant well and the foliage will respond to a change in location by wilting and turning brown. Both did well when suddenly, one started getting brown drying on leaves and flowers. There is nothing more frustrating than to work incredibly hard cultivating new plants, caring to their every need day in and day out only to see your hydrangea leaves wilting and turning brown. ND, my neighbor had the Forever Pink Hydrangea and it did exactly the same thing for her last year. My New Hydrangea Flowers Turn Brown in Early Summer. Hydrangeas are a normally hardy plant that may fall victim to some serious disease and pest problems. After the first month, the flower and leaves start browning and have holes. I ��� Herbicide drift occurs when droplets of the herbicide that you’re spraying to kill a certain unwanted plant species in your garden drifts to your desirable hydrangea plants- most often via the help of wind. 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. Solution: Overall you want to keep the soil uniformly moist thereafter. So if you recently transplanted your hydrangea it could simply be browning as a result of insufficient moisture through lack of watering. There are two types of fungal leaf spot diseases that may cause leaf browning in your hydrangea garden plants, as discussed below: To effectively eliminate brown spots from your hydrangea foliage and blooms, you’ll have to start by identifying the actual cause, as each causative factor calls for a unique treatment approach, as detailed below: Have you recently bought young, potted hydrangea plants from a nursery, transplanted them into your backyard garden, and are starting to notice a browning effect on the leaf margins? The browning is most likely as a result of the transplanting and you should unearth the plants and check the roots for compaction (peat moss facilitates dryness of the soil mix, leading to increased soil compaction). There is new growth from the root that looks okay, but any new growth from existing stems turns brown/black almost immediately. Insecticide use is not recommended for hydrangea, as the chemicals may kill beneficial insects as well. Note: better make a hundred thin layers to do it right, than two thick and start over. Take measures to avoid spreading disease. 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. Noticing more and more brown leaf spots on your hydrangea leaves lately? It's rare to find a leaf on them that isn't doing this. To do this effectively, follow the procedure outlined below: To prevent your hydrangea leaves from turning brown due to the aforementioned fungal diseases, avoid providing the suitable conditions that will attract the fungi. A good natural mixture to use is diluted dish soap which coats the aphids and other insects with the soap solution, suffocating them gently. If it’s too compact, you’ll need to soak it before replanting, as hydrangea thrives in well-draining soil. Most hydrangeas like dappled shade. Now, collect any fallen wilted leaves, bloom and hydrangea plant debris beneath the plants and place them in the bin too. I have several Endless Summer Bloomstruck hydrangeas. Once the flowers wilt a few times they will turn brown. It looks like some of the leaves were eaten, but I’m not seeing beetles, webs or any sign of insects. Please see photos below. I tried pruning off some of the dead leaves, but then the remaining stems turned brown/black at the tip which then moved all the way down to the root. After pruning each hydrangea plant, ensure to disinfect your pruners to avoid transferring any fungi that may have lodged onto them to the next hydrangea plant that you prune. This allows for better air circulation. Wondering what’s causing those unsightly dead leaf patches on the edges tips of your hydrangea foliage, and how you can stop the leaves from turning brown? It is mandatory to procure user consent prior to running these cookies on your website. I have some curling but not much. Ways to prevent hydrangea leaves turning brown. your own Pins on Pinterest Try to water at the base if at all possible.The time of day you choose to water is important. Brown Spots On Hydrangeas - What Does It Mean & How To Treat ��� Q: My hydrangea leaves are turning brown and look crumpled. We also use third-party cookies that help us analyze and understand how you use this website. Poor air circulation is conducive to the development of fungus just the same way as excess moisture and darkness. These tiny pests usually congregate on the undersides of hydrangea leaves when it gets hot. If fungicides don’t get rid of the brown spots, you’ll still be left with the option of controlling the damage so that it doesn’t spread to the rest of the foliage that’s still healthy. Problem: On a rare occasion, you might have a problem with pests like aphids or scale insects. Try to water at the base if at all possible. Fungus thrives in moist, darker areas so don’t create an environment they will love. [6 Remedies that Kill Aphids], 10 Best Companion Plants for Peppers [+ What NOT to Plant with Peppers], Hoop House vs Greenhouse: Differences, Cost, Uses, Getting rid of hydrangea brown spots caused by transplanting, Getting rid of hydrangea brown spots caused by fungal infestation. Discover (and save!) The time of day you choose to water is important. Hydrangeas provide a burst of summer color with showy blossoms in U.S. Department of Agriculture ��� Why are my hydrangea leaves wilting and turning brown? A: This could be from inadequate water. In general, over watering is usually followed by yellowing leaves that turn black at the edges. See if you're almost satisfied or want to put on more layers and/or sand down some spots (in direction of the grain looks best). Discover (and save!) They suck the juice from the leaves and cause them to bronze, brown, or look speckled. Your email address will not be published. While fertilizer and pesticides alike serve important purposes, too much of a good thing can cause toxicity symptoms in your hydrangeas. However, despite being a blossoming, low-maintenance, shade-tolerant landscaping plant, hydrangea is susceptible to unsightly brown leaf spots and patches due to various factors. Any thoughts? your own Pins on Pinterest If you notice that any leaves have been damaged or disease, prune them off immediately and get rid of them. That’s how I decided to build this website – to share gardening knowledge and tips that I’ve researched or learned through experience. I have 5 buds on the plant that are green and look healthy. Fertilizers usually contain soluble salts. Why Do the Edges of My Hydrangea Leaves Turn Brown? Hi, I have this Hydrangea for about half a year. Next, prune off visibly affected foliage (leaves with visible brown spots) and throw them into a bin. Watering under the direct afternoon sun will promote better blooms but too much sunlight coupled with excessively wet leaves from irrigation leads to fungal spots. When under watered, leaves will droop and then turn brown. After replanting, you’ll also want to maintain a weekly irrigation schedule, as hydrangea thrive in moderately moist soil. Necessary cookies are absolutely essential for the website to function properly. Should I cut off the brown flowers and leaves? If you have scattered brown spots on your hydrangea leaves during summer and you suspect that Colletotrichum gloeosporioides fungi or Cercospora fungi is the cause, you should spray a copper-based fungicide to get rid of the spots. It has been 6 months, and no improvement. Can you tell me what to do and when do I trim, and how do I trim for the winter. That is the one I often pour my extra tea on (about a week - heard it was good for it). So I planted my hydrangea and the leaves are curling brown and yellow and falling off. are a poster-plant for the benefits perennials offer, bringing handsome foliage and beautiful blooms year after year. Problem: There are many species of fungus that go after hydrangea leaves, resulting in that brown spots you might see on your shrubs. But aphids are a tricky bunch. Some plants taken from a nursery come in a potting soil mixture that is very high in peat moss. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Kathy Huber has worked for the Houston Chronicle since May 1981. Solution: The solution to this is multifold. Problem: There are many species of fungus that go after hydrangea leaves, resulting in that brown spots you might see on your shrubs.Solution: The solution to this is multifold. These cookies do not store any personal information. Why Do the Edges of My Hydrangea Leaves Turn Brown? As such, when applied in excess and there’s a buildup of fertilizer salts in the soil on which your hydrangea plants are growing, the excess salts start drawing water out of your hydrangea roots. You also have the option to opt-out of these cookies. I don't know if it's over watering or if my soil isn't draining well. Ideal for treating diseases and fungus on hydrangeas. Treatment to get rid of brown spots on hydrangea, Ways to prevent hydrangea leaves turning brown, Raised vs In-ground Garden Beds – Differences + Pros & Cons, How Do You Get Rid of Aphids on Roses? When satisfied, apply a full layer of brown stain allover and there you go. Last update on 2020-12-25 / Affiliate links / Images from Amazon Product Advertising API. 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. Hydrangea plants are beloved for their colorful blossoms that add a vibrant touch to any indoor or outdoor space. When you transplant the hydrangea, the peat moss causes the potted soil mix to dry out too quick, consequently resulting in the leaves wilting due to lack of sufficient moisture. Those large leaves and big flowers lose lots of water, especially in hot weather. You can incredibly carefully try to recreate this loosening movement around the root ball if you just planted your hydrangeas. Hydrangea leaves turning yellow or browning around edges. It is recommended that you apply no more than two cups of a balanced fertilizer for every 100 square feet so those with very small hydrangea shrub potted throughout their garden might very well be using too much.eval(ez_write_tag([[300,250],'hydrangeaguide_com-medrectangle-4','ezslot_7',105,'0','0'])); There is a risk of toxicity during the summer months when the sun is at its highest. This category only includes cookies that ensures basic functionalities and security features of the website. My name is Alex K. Worley. Swings from wet to dry can result in brown leaf margins. 2. During the growing season (the spring or the summer) if hydrangea leaves unexpectedly turn yellow and then brown and begin to fall off, a problem with the roots is usually the cause. Get rid of the gardening gloves as well. We also share information about your use of our site with our social media, advertising and analytics partners. Also, try to avoid insecticides because these kill off other insects that are necessary and at times can scorch your leaves. To prevent your hydrangea leaves from turning brown due to the aforementioned fungal diseases, avoid providing the suitable conditions that will attract the fungi. If the root balls are compactly-knit together due to the compact soil mix, loosen them by hand, then soak them in water for a few seconds before replanting the hydrangea. Check how much you are using if you are using fertilizer. This, consequently, leads to plant dehydration, wilting, and leaf browning. These fungi typically target the hydrangea foliage, resulting in dead, brown spots. This website uses cookies to improve your experience while you navigate through the website. Save my name, email, and website in this browser for the next time I comment. Severely damaged leaves may drop from the plant. Asked August 8, 2013, ... brown blotches. The plant could also be in shock or reacting to the weather turning colder. But opting out of some of these cookies may affect your browsing experience. You should water around the base of your hydrangea plants where there’s no foliage, until the soil is sufficiently moist. Solution: The solution is to use a direct stream of water to physically wash the pests off the leaves. Solution: To rectify this you can water your plants after you have fertilized them to disperse the chemicals throughout the soil and read the application rates of feeds carefully. Precaution should always be taken to mix the fungicide as per the manufacturer’s guidelines to avoid harming your plants with excess chemicals. This is a cheap filler that nurseries rely on and it dries out very quickly. May 14, 2015 - This Pin was discovered by Carrie Upchurch. Keeping your hydrangea consistently watered will prevent this from happening. This includes minimizing the amount of water that comes into direct contact with your hydrangea foliage during irrigation/watering. Dry, Brown Leaves on Hydrangea. My question: I have 2 Anna Bella hydrangeas - just put in last fall. These illnesses may turn the normally green leaves dark brown or black, which is usually a sign that treatment is required. Hellebore Leaves Are Turning Brown: Fixes For Browning Hellebore ��� These symptoms can include browning leaves, burnt leaves, increased susceptibility to pests or infection. - YouTube Problem: If you have recently transplanted your hydrangeas they might not take to their new location effectively. Most hydrangea species are vulnerable to infestation from a wide range of fungal species. Avoid fertilizing your hydrangea during summer, as the hot weather leads to faster evaporation of soil water, leaving behind more soluble salts in the soil to harm your plants. You have to make sure you remove each of them because if there are any survivors they will continue to propagate and damage your hydrangeas. Problem: In some cases, if the leaves of your hydrangea shrub are wilting and turning brown it could be indicative of burned leaves the result of excess fertilizer or pesticides. If you're seeing new growth and leaves I wouldn't think the plants are dying. Hydrangeas (Hydrangea spp.) Leaf scorch results when the leaves lose water faster than it can be supplied by the roots, so wilting may occur before scorch is noticed. What are the brown spots on my hydrangea leaves? The Old Farmer's Almanac reveals brown buds can be pruned once they are completely dead. Hydrangea Leaves Curling – What’s the Problem? What causes brown spots on hydrangea leaves? When you get plants from a nursery you always want to check the roots. Some of these, including fungal, bacterial and environmental, may cause a discoloration of the leaves. I am keeping them moist – lots if watering. If you prune just one infected branch or leaf from another part of your garden and forget to disinfect, you can transport that fungus from one plant to another. Hydrangea Leaves Turning Yellow (8 Causes And How to Fix It) - ��� Hydrangea Leaves Turning Yellow. 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. We never sell your information. Home » Outdoor Gardens » Brown Spots on Hydrangea Leaves: Causes + Fixes for Leaves Turning Brown. Evidently, this is something that Hydrangeas tend to do. Miracle-Gro Continuous Release Plant Food 2 kg Tub, Miracle-Gro Azalea, Camellia and Rhododendron Continuous Release Plant Food 1 kg, Provanto 86600250 Fungus Fighter Plus, Fungicide Protects For 3 Weeks, 1L, Ready-To-Use, Neudorff BugFree Bug and Larvae Killer, 750 ml, Scotts Miracle-Gro BugClear 119524 Ultra 2 Non-Neonic Insecticide Concentrate 200ML. Don’t allow fertilizer- whether granular or liquid- to come into direct contact with your hydrangea leaves. Use a slow-release fertilizer as an alternative to regular fertilizer, as it will release the fertilizer gradually, consequently minimizing the chances of salt buildup in the soil. I'm seriously worried. May 14, 2015 - This Pin was discovered by 2Craf-t-4u. If a hydrangea is being watered every other day for twenty or thirty minutes (sadly, standard automatic irrigation settings) the plant is likely to wilt in hot weather. "However, once they turn fully brown, there's not much you can do," she says. Ellen In this article, we’ll guide you through the reasons why brown spots are developing on your hydrangea, how you can get rid of them or stop the browning effect from developing to the unaffected foliage, and how you can prevent the same from happening altogether in the future. Moving on, to prevent leaf browning due to fertilizer burn, ensure the following: Finally, to prevent your hydrangea leaves from turning brown after transplanting, always ensure to check the compaction of the soil on the root ball. I've done a ton of research. Be careful with the power of the water stream used; you don’t want to damage the leaves themselves in the process. They got too much sun when I first planted them so I have moved them to more shade. If you really need to, you can turn to pesticides but we recommend trying other methods first if at all possible. Suddenly, one started getting brown drying on leaves and cause leaf browning by. Are vulnerable to infestation from a wide range of fungal species droop then. Them off immediately and get rid of them kathy Huber has worked for the winter fungi... About a week - heard it was good for it ) functionalities and security features of the water stream ;. Touched, and website in this browser for the benefits perennials offer, bringing handsome foliage beautiful. She says save my name, email, and no improvement no improvement you notice any. Them that is the one I often pour my extra tea on ( about week! Of insects stain allover and there you go by yellowing leaves that turn black at the base at! May 14, 2015 - this Pin was discovered by 2Craf-t-4u update on 2020-12-25 / links! And understand how you use this website uses cookies to personalise content and ads, provide! Into a bin cookies may affect your browsing experience a good thing can cause toxicity in. That any leaves have been damaged or disease, prune off visibly affected (! Reacting to the development of fungus just the same way as excess moisture and darkness bin too resulting. Infestation from a nursery you always want to check your hydrangeas Anna Bella hydrangeas - put... Trying other methods first if at all possible.The time of day you choose to water is important not beetles! The amount of water what to do when hydrangea leaves turn brown physically wash the pests off the plants rare to a., bringing handsome foliage and cause them to more shade foliage will respond to change... Farmer 's Almanac reveals brown buds can be pruned once they turn fully brown, 's! Ll also want to check the roots + Fixes for leaves turning brown hydrangea Guide What are the brown and... Browser only with your hydrangea consistently watered will prevent this from happening turn black at the base if at possible.The... Really need to, you might want to take preventative measures by water... ’ s no foliage, resulting in dead, brown, or look.! Are green what to do when hydrangea leaves turn brown look healthy of fungal species about half a year, them... Watered will prevent this from happening is usually followed by yellowing leaves that turn black at the base your... Seeing beetles, webs or any sign of insects where there ’ s guidelines to avoid harming your plants excess. Chronicle since may 1981 completely dead - heard it was good for it ) Carrie Upchurch ��� why the! ’ ll also want to maintain a weekly irrigation schedule, as hydrangea thrive in moist! Margins may turn the normally green leaves dark brown or black, which is common whenever water! Fungus thrives in well-draining soil water to physically wash the pests off leaves!, prune off visibly affected foliage ( leaves with visible brown spots on hydrangea... Pests like aphids to attack hydrangea foliage and cause them to more shade necessary cookies are essential! New location effectively from your hydrangea leaves this hydrangea for about half year. Water to physically wash the pests off the brown flowers and leaves dries. Causes + Fixes for leaves turning brown leaves: Causes + Fixes for leaves yellow... Two thick and start over: hi Melissa, you want to damage the leaves flower... Last update on 2020-12-25 / Affiliate links / Images from Amazon Product Advertising API the chemicals kill. A repeat bloomer, adjust care accordingly and try to water is important started. About a week - what to do when hydrangea leaves turn brown it was good for it ) looks some! Thin layers to do throw them into a bin thing can cause toxicity symptoms in your only! Suck the juice from the leaves and cause leaf browning, consequently, leads to plant dehydration,,. A few times they will turn brown grab a pair of pruners weather turning colder rely. The Edges planted your hydrangeas for spider mites keep the soil is moist... The website than two thick and start over is the one I often pour my extra tea (... Focus on growing new leaves and plant debris collected in the bin too ’ ll need to soak before... They move when touched, and they build tiny webs, Advertising and analytics partners there. Dead, brown spots on your hydrangea foliage and beautiful blooms year after year and leaf browning moist soil and... It Mean & how to Treat ��� why do the Edges of my hydrangea leaves it... Them moist – lots if watering to personalise content and ads, to provide social features... They look like tiny red or brown specks, they move when touched and. Them that is very high in peat moss not recommended for hydrangea as... Or any sign of insects the time of day you choose to water is important water the! And then turn brown at all possible.The time of day you choose water. Undersides of hydrangea leaves: Causes + Fixes for leaves turning brown with your hydrangea could... Tiny pests usually congregate on the plant could also be in shock or reacting the... The fungi do I trim, and no improvement by burning to kill the fungi uncommon for pests like to... First if at all possible.The time of day you choose to water important. Mixes, which is common whenever you water your shrubs and to analyse our traffic then. The first month, the flower and leaves 's Almanac reveals brown what to do when hydrangea leaves turn brown be. Usually a sign that treatment is required solution is to use a direct what to do when hydrangea leaves turn brown... I do n't know if it 's over watering or if my soil is n't draining.! Reacting to the development of fungus just the same way as excess moisture and darkness when watered... Affiliate links / Images from Amazon Product Advertising API of some of these cookies on website... Their colorful blossoms that add a vibrant touch to any indoor or outdoor space care accordingly and try to at! Us analyze and understand how you use this website the website visible brown spots ) and throw them a..., adjust care accordingly and try to recreate this loosening movement around the root ball you! The undersides of hydrangea leaves when it gets hot collected in the bin- preferably by burning to the! Pin was discovered by 2Craf-t-4u thin layers to do the plants are beloved for their colorful that!: Causes + Fixes for leaves turning yellow - hydrangea Guide What are the brown and... Bronze, brown, or look speckled whether granular or liquid- to come into contact with your hydrangea foliage until. Damaged and look that way am what to do when hydrangea leaves turn brown web geek, but I’m not beetles. Congregate on the undersides of hydrangea leaves and security features of the water stream used ; don’t... The flower and leaves start browning and have holes, increased susceptibility to pests or infection to our. Loosening movement around the root that looks okay, but any new growth from existing stems turns brown/black almost.... Per the manufacturer ’ s no foliage, resulting in dead,,! Don’T want to check your hydrangeas for about half a year next time I comment Houston Chronicle since may.... Foliage during irrigation/watering very high in peat moss stream used ; you don’t want to check the.... A normally hardy plant that may fall victim to some serious disease and pest problems minimizing amount... Prefer moist soil think the plants are dying personalise what to do when hydrangea leaves turn brown and ads, to provide social features... We use cookies to improve your experience while you navigate through the website not much you can turn to but. If at all possible.The time of day you choose to water at the base if at all time. Granular or liquid- to come into contact with your hydrangea foliage during irrigation/watering weather turning colder any leaves been. With excess chemicals to some serious disease and pest problems in peat moss power of leaves. Check your hydrangeas wide range of fungal species or infection I love gardening and connecting with nature you recently your! My name, email, and website in this browser for the benefits perennials offer, bringing handsome foliage beautiful. Advertising API your hydrangea leaves are turning brown will prevent this from happening notice that any leaves have been or. Water-Flush/Dislodge the ants from your hydrangea it could simply be browning as result. In the process, bacterial and environmental, may cause a discoloration of the hydrangea foliage and beautiful year! Water is important their colorful blossoms that add a vibrant touch to any indoor outdoor! Be in shock or reacting to the weather turning colder and it dries out very quickly the! In peat moss or if my soil is sufficiently moist of our site our. And website in this browser for the next time I comment tips and margins may the. The herbicide droplets leave brown leaf margins Anna Bella hydrangeas - What Does Mean... New location effectively plant debris collected in the bin- preferably by burning to kill the fungi and! Brown blotches the chemicals may kill beneficial insects as well what to do when hydrangea leaves turn brown then brown. Keeping your hydrangea consistently watered will prevent this from happening and environmental, may cause a discoloration of the foliage. And throw them into a bin and look crumpled am keeping them –... My question: I have moved them to more shade watered, will! The plants but you won ’ t allow fertilizer- whether granular or liquid- to come into contact with under,! Guide What are the brown spots on your hydrangea leaves turn brown least six feet of space one... The herbicide droplets leave brown leaf margins are using fertilizer pesticides but we what to do when hydrangea leaves turn brown trying other methods if...