The leaves are simple with margins that can be toothed or lobed. Plus, using the same one repeatedly can cause resistance. Avoid planting it in hot, dry, exposed sites. Fungicides are available to control it, including paraffinic oil, axozystrobin (Syngenta Mural Fungicide Azoxystrobin Benzovindiflupyr, and thiophanate-methyl, Cleary’s 3336 Turf & Ornamental Fungicide Southern Ag Thiomyl Systemic Fungicide). This is mysterious. COPYRIGHT © 2020 ASK THE EXPERTS LLC. White Speckled Fungus on Hydrangeas. Would you like to try uploading your images again? If your hydrangeas are planted in the ground, there isn’t much you can do to stop this from happening. Be sure and sterilize your pruning tools between cuts with bleach or rubbing alcohol, so you don’t spread the infection. 2. Thank you for your reply and clarification. The new leaves look green and wrinkled, so I thought that it might be a fungus. Status report: I trimmed off all the effected leaves and sprayed the rest with chlorfirinal (sp?). Are you sure it’s a fungus? That disease would definitely call for fungicides. Would it be possible to upload a picture of the spots? I’m sorry that the mancozeb didn’t work. Hopefully the new growth will come quickly. We live in Indiana. Here is more about what we do. Cercospora Leaf Spot typically appears in late summer and fall. My hydrangea leaves have a lot of white, flaky stuff on them. Prune away heavily affected areas and spotted leaves to prevent the fungus from spreading. From my… Read more », Hi Terence, I am so sorry to hear about your hydrangeas. My hydrangeas are blossoming! Hi Kathy, I am so sorry to hear that your hydrangea is having problems with its flowers. Ask the people in the garden center for a fungicide with copper, chlorothalonil, or mancozeb. Some biofungicides (living organisms that kill fungi) have been used against… Read more », I have four endless summer hydrangeas planted in front of my shed. Thank you for posting pictures. Unfortunately, I can’t find a… Read more », Dr George. H. arboreacens bacterial leaf spot disease. Also collect any fallen leaves or plant debris and get rid of those also. If these are the problem, you can control them with horticultural oil or insecticidal soap. White spots and cool weather with a storm immediately made me think of powdery mildew. Hydrangeas are susceptible to honey fungus, so replace them with more resistant shrubs. This hydrangea problem appears severe, but it’s usually just a leaf-spot fungus that doesn’t really harm the plant. The spots are generally small, circular, and scattered across the leaf surface. Is that correct? These plants are 8 yrs old. Since then I moved the pots indoor to protect them from further damage. Hi Victoria, I’m so sorry that your hydrangea is showing signs of disease. Some of the leaves have curled up and have gone brown and dry on the ends of the leaves. How often to use? I haven’t read about neem oil being used to treat anthracnose on hydrangeas, but it can be a great fungicide. If you rub against the spots, do your hands turn rust colored? You are the best. What remains doesn’t look like powdery mildew to me. There are no chemical options to control this disease. Thank you so much Helga! There is one other possibility. Hydrangeas (Hydrangea spp.) Dear Ruth, Mancozeb might be a good one to try. That could indicate an insect problem. Cercospora Leaf Spot (also known as Cercospora hydrangea), is typically brown or purple colored spots at the base of the plant. We have two limelight hydrangea trees that are three years old. Spider mites can cause that, but they like hot and… Read more ». In acidic soil conditions (less than 6 on the pH scale) with available aluminum, you will tend to have blue and purple blooms. It afflicts macrophyllas the most seriously, although it will attack some of the others. Two of my hydrangeas are dying. I don’t like to use the toxic fungicides so switched to a copper one. I sprayed with an organic insecticide/miticide and cut back most leggy stems. I am in zone 7 (East Texas) and we have sandy soil. I also have two hydrangeas that I planted from pots a week ago. However, you can try a different fungicide to see if the new growth will be enough to save them. Plants are looking much better. May 30, 2017 - Explore sue andrepont's board "Hydrangea Disease" on Pinterest. There are no spots. It may be too late to save your plants. The damage to the leaves and that fact that it affects the flowers, too, makes me think that. However, it spreads mechanically, so tools can transmit this virus. It could be the conditions of your house. The amount to use depends on the percentage of hydrogen peroxide you are using. Last year, I started noticing the brown spotting. However, that usually manifests as spots in the middle of the leaves rather than causing dead tissue around the edges of the leaves. Does it make sense to use the fungicide on the hydrangeas that are planted close to the ailing ones or will it hurt them? Unfortunately, it’s difficult to diagnose from a picture because several pathogens produce spots that look similar. Now that she lives near Santa Barbara, California, she is delighted that many of these grow right outside! If they are purple, that could be Cercospora leaf blight. Leaf spot diseases Since, most ailing hydrangea symptoms are foliar, the number one cause is usually fungal. Had you just fertilized them by chance? How to Treat White Mold This fungal disease can be quite difficult to treat, as symptoms of white … That disease also spreads to the leaves, and it looks like that is the case from your photos. Small, gray to white patches appear on the leaves. I get them with the leaves curled and crunchy, some varieties more then others. Seems to have flushed away the fertilizer from the roots. My dad tried a broad spectrum fungicide and that has not helped them bounce back. Bacterial leaf spot and bacterial wilt ydrangea. (And keep disinfecting your pruning shears.) It’s difficult to diagnose without seeing it. Be sure to disinfect your pruning shears using 10% bleach or 70% rubbing alcohol. Leaf Spots (Cercospora species and Phyllosticta hydrangea), Anthracnose (Colletotrichum gloeosporioides), Bacterial Leaf Spot (Xanthomonas campestris), Read more about identifying and treating anthracnose on hydrangea here, 19 of the Best Cool-Weather Crops for a Productive Fall Garden, 12 Easy Ways to Extend the Harvest Season, read more about growing azaleas in this article, How to use Bacillus thuringiensis (Bt) to Control Insect Pests, Plant Your Salad Greens Early: Tips for Growing Lettuce and Microgreens, Exploring Rodale’s Ultimate Encyclopedia of Organic Gardening, How to Pick the Best Splitting Maul for the Job, How to Care for Calendula (Pot Marigold) in Winter, How to Grow Hydrangeas for Big Blossomed Beauty, The Best Companion Plants to Grow with Dill, How to Grow and Care for Alstroemeria (Peruvian Lily), Prune your plants, so that the insides are open and will not accumulate moisture. Hydrangeas are easy to grow in well-drained soil, which should contain plenty of organic matter or humus. Another thing to do is pick up all the leaves and debris from under the plants and dispose of them away from your garden. We will introduce you to the major hydrangea diseases, so you know what to look for and how to prevent and treat them. A few of the leaves have also turned whitish in spots. But I’ll keep at it spraying every 7 days as instructed. Also, it won’t remove an existing infection. The leaves of the plants were green and flourishing. I am attaching more pictures. The symptoms sound like the plant might have Phytophthora root rot – a hideous disease. I have a couple of shirobana gaku ajisai that are being hit really hard with what looks like Anthracnose and some kind of leaf curl. I thought hydrangeas loved partial shade so I kept my plants indoor but near a south-facing window. J. of Phytopathology – Corynespora, Cercospora, Insects often spread viruses, so both are possible. Focus on keeping it from spreading. Be sure to disinfect your pruning shears to be safe with 70% hydrogen peroxide or 10% bleach. However, identifying the causative agent of leaf spotting in hydrangeas is difficult, as many types of diseases show similarities to hydrangea ringspot symptoms. I have already put in an order with Amazon for Mancozeb. They are most prevalent in moist conditions, although some occur in warm periods, while others form in cooler temperatures. Give them 10-14 days to see an effect. If your plant has disease symptoms, this article can help. Water thoroughly past the shrub’s root zone. It can be treated by a variety of cultural moves as well as spraying a fungicide. Simple Steps to (Once-Again) Stunning Blooms — How to Solve Common Hydrangea Problems . 3) Are there round orange spots on the bottom of the brown leaves? Hydrangeas (with the exception of white ones) are at least a little bit pH sensitive. This year we transplanted them and apparently the problem was worse than I anticipated. All normally come with the leaves like that. Definitely avoid overhead irrigation, because moisture spreads the fungus. The hydrangea with… Read more ». Do you have the tree on stones in a tray that you can keep wet? I can’t be positive, but that can be a response to stress or root damage. But the leaves must be dry for the spores to germinate on them. Other names for the disease are white canker, watery soft rot, timber rot, damping off, pink rot wilt, crown rot and several other descriptive names. They spots appear to have a hint of red and they start from the leaf tips. You could start with neem oil. This limpet-like insect also feeds on acers and cherries. Some of these links may be affiliate in nature, meaning we earn small commissions if items are purchased. If you do have them, ladybugs work wonders. TIA. Hydrangeas can get minor pests and diseases such as powdery mildew, leaf spots, aphids, and scale insects. It would probably be fine, but I’m all for an abundance of caution in situations like these. Four-lined plant bug Poecilocapsus lineatus. This won't take off the spots already there, but it will prevent any more from forming. There are two prominent insects that suck on hydrangea stems and damage them. The Spring brought early growth with one plant doing better than the other, both started leaf production and is still fine but the other plant leaves have withered as though lacking water, both plants have been watered the same, usually once a… Read more », Hi Alan, I’m so sorry to hear that one of your hydrangeas is afflicted with something! Hi Eden, I’m sorry that your hydrangea is unhappy. Any ideas? Powdery mildew manifests as a white powdery substance on the surface of the leaves. Cercospora manifests as circular purple or brown spots on the bottom of the plant. My family has two oak leaf hydrangeas that have yellow spots and are not doing very well. Hydrangea macrophylla is the most susceptible. Light-brown centers surrounded by dark-brown rings create a bull's-eye effect. Hi Pam, I’m so glad that you found the article useful! Cercospora leaf spot is an infectious leaf disease that affects smooth, panicle, oakleaf and bigleaf types of hydrangea in Arkansas landscapes and nurseries. Plants are usually infected a month or two before spots appear on the leaves. The plants themselves look fine. Also, this resistance varies depending where you are in the country. Feed: Miracle-Gro. If I remove the dead portion it just looks like the plant is dead, yet there are flowers blooming on other branches. Hydrangea Hydrangea Printable PDF Click on images to see larger view Hydrangea is a deciduous woody ornamental shrub or climbing plant that is known for its showy clusters of flowers that come in a large variety of colors including white, lime green, pink, purple, and blue. It affects both our oakleaf and mophead hydrangeas, our pawpaws, dogwood, and azaleas. I just received these hydrangeas the day I sent them to you. They feel a little spongy. It’s anthracnose. However, the hydrangea is not doing well. It definitely isn’t powdery mildew. They are turning black around the edges and have some black spots in the middle. The other is struggling to push out new buds and looks like the other did 4 weeks ago- bare with small leaf buds. Then go back to watering as usual. Spots … That could by Botrytis, a fungus that attacks both the flowers and leaves. They are blue, pink and white in color! Hope that helps! They should be able to help you. Thank you so much for providing the pictures and sharing your good news. Hydrangea macrophylla Which Hydrangea cultivars work best for you Fungicide sprays LEAF SPOTS WARNING! The first symptoms are water-soaked spots. You can see white, cottony growth on the bottom of the leaves. Fortunately, this fungus usually doesn’t kill its hosts. That is an excellent idea, especially since you know there are fungal pathogens right next to them. I have some doubts about using hydrogen peroxide to treat anthracnose. This is how my leaves look, so glad to find your site. Please let us know this product works on the hydrangea. If it is powdery mildew, there are several fungicides that you could apply. Not all the leaves have black spots in the middle of them though. It only affects Hydrangea macrophylla. If it’s Botrytis blight, that would also attack the flowers, which would be covered in a grey mildew. P.S. Does that fit the symptoms? I am spraying… Read more », Hi Ann, I’m sorry that your hydrangeas are afflicted with a disease. However, once again, you can spread the virus with your tools. While the leaves on my other Oakleaf are getting large and full, the leaves on this hydrangea have stopped growing. Wait three hours and flush it again. I’m so glad that you found the information helpful. I knew last year there was a problem with one of them and I treated it with a fungicide. Hi Helga, It can be difficult to diagnose leaf diseases. Space them properly, and prune branches that are closely spaced. Hi Summer, I’m so sorry about your hydrangea! I don’t know… Read more », Hi DLyn, Welcome back! Hydrangeas can be prone to a fungal disease that causes spots all over the leaves. I am wondering if the cause could be a deficiency of phosphorus. You should probably use… Read more ». I’m also debating Cercospora leaf spot. If so, those compounds can bind up the phosphorus and make it unavailable… Read more », I have 4 snowball hydrangeas that were started from a bush at my parents’ house. This disease will increase until it covers all the leaves and shoots. Thank you!! If you provide a leaf, they might be able to help diagnose what organism is responsible. I hope your… Read more ». Hi D’Lyn, However, it could possibly be downy mildew. These are triggered by too much or too little water or inconsistent soil moisture. I am aware of the “rust” blight that hydrangeas sometimes have but I thought that was specifically a leaf issue. I’m not positive, but I suspect it might be due to Hydrangea Chlorotic Mottle Virus. Pretty much the same result. Sorry for the technical issues . I do not see any insects or borers or fungus on them… Sevin dust didn’t help. Unlike the previous two diseases, powdery mildew likes both cool and warm, humid weather. If it’s any comfort, I’m struggling to identify the problem, too! Powdery mildew causes hydrangeas to develop small tufts of gray or white powdery mildew on the leaves of the plant. They have been there for seven years. I suggest cutting them right back to the ground in early spring to give them one more chance. The most common symptom you will see on your hydrangea is a leaf spot disease, commonly referred to as foliar symptoms. Hi Japjeet, I’m sorry to hear that. Scale insects are tricky to eradicate so, rather than recommending a chemical, I would cut the entire bush down to the ground in spring and dispose of all the trimmings. In the Autumn (Fall) we pruned the branches back by 2/3rds. of Hydrangea. That combination makes me think that it might be an insect known as oyster shell scale. Fungal Leaf Spots. These hydrangeas are heirloom, 7th generation plants, and they’re dying quickly. One thing I would advise, especially if it’s a fungal disease, is to cut off the leaves with the symptoms.… Read more », Please help, Helga! Thanks for asking. Hydrangeas infected with this virus will have a pattern of yellow mosaics on their leaves. We have a company coming to treat around the plant and hopefully save it! That can also cause spots on the leaves, so I don’t think you have to worry that it might have two diseases at once. The material is for general information only and does not constitute investment, tax, legal, medical or other form of advice. Plant 1: Pink flowers Unfortunately, that looks to me like it has anthracnose. Best offers for your Garden - https://amzn.to/2InnD0w ----- Hydrangea Plant Diseases. That’s fantastic news! Any advice would be greatly appreciated! Hydrangea are important bacterial diseases of h quercifolia (Oakleaf hydrangea), H. macrophylla, and are most commonly affected by . Are the flowers okay? The leaves are prone to several diseases which mar this ornamental appeal. I think you should prune off the infected leaves to keep the disease from spreading. That is a good way to tell whether the spots are due to a fungal rust infection or to something else. Get 10% off at Thompson & Morgan and save on seasonal specials. I have not seen any white flies hanging around them, but we started noticing our Ruby Slippers with the same spots on lower leaves closer to the ground, after it has exploded with blooms this spring so when the fungicide didn’t work we looked to some other potential problems. Are they in full sun, or do they get… Read more ». I made an error in my post about my hydrangea problems. I hope you are enjoying the summer. I live in Michigan and have the plant in my house. It’s a pretty nasty disease. You should prune off the infected areas to keep other fungi from growing on them. We bought these Hydrangeas few weeks ago, transplanted them and a week ago or so, they started to look bad. It looks like the plant has powdery mildew. My hydrangea has something going on and it is not good! Thanks Helga! Hi Dlyn, I’m so sorry about the transformation of your hydrangea plants. Hi Helga! See our TOS for more details. Hi Victoria, I’m glad that you were able to prune them. Bacterial Foliar Diseases of Hydrangea . I live in Michigan, which has very cold winter. What it should do is keep the infection from spreading to other leaves and flowers. There is a fungus called Nectria that causes cankers on trees and shrubs. I think I can figure out what is going on from your description, but a picture would help immensely. Options include mancozeb, iprodione, or thiophanate-methyl. Leaf spots caused by Cercospora, Alternaria, Phyllosticta or Anthracnose stem from a fungal disease. They don’t have flowers yet, so I’m not sure about the first problem. It’s not responding to any of the fungicides I try, I can’t seem to get them to upload, or delete the comments that uploaded without the pics. Maybe drier weather and the spray will work. A few of the leaves have also turned whitish in spots. Not sure if I really have a green thumb. Hi Kay, I’m sorry to hear that! Powdery mildew is a fungal disease that is typically easy to identify; it appears on leaf surfaces and other plant parts as powdery white growth. 2011. The first symptoms are orange pustules on the bottoms of the hydrangea leaves and yellow spots on top. Soil needs to be acidic for the plant to absorb the aluminum. Tomato Ringspot Virus. The first symptoms are water-soaked spots on the flowers. Photo by Gerald Holmes, Strawberry Center, Cal Poly San Luis Obispo, Bugwood.org. Thanks. I even have a few blooms too. Spotting generally begins at the base of the plant on older leaves and works its’ way up the plant. This is the time of year… Read more ». Bigleaf hydrangea prefers morning sun and afternoon shade. The first indication that your hydrangea is infected with Colletotrichum gloeosporioides will be brown spots on the leaves. The blooms all look sort of dead… They don’t have any color. One way to control this disease is to apply a fungicide as soon as you discover it. It looks you are right about anthracnose. Apr 15, 2016 - Hydrangeas can be prone to a fungal disease that causes spots all over the leaves. I’m not sure how to advise you to provide… Read more », Hi Helga, have discovered this sticky problem on my 5+ year old hydrangea bush in my front garden. The bark, buds, and flowers are toxic if large quantities are ingested. Now the outside temperature have gone up around 50-80 degrees, is that good for hydrangeas? You should pick up any leaves and vegetation under the plant and get rid of it away from your garden, so it won’t spread spores. The leaves are pretty uniformly discolored. Gardening expert Val Bourne advises. I would strongly suggest that you switch to a different spray. Many different fungicides would work against this pathogen. It would help me to figure out what the cause is. The infestation looks severe to me, so I would definitely suggest treating it. If you have a persistent problem, you may need to use fungicides. That can be rust – another fungus. That is always a huge help. Spray as many as them off with your hose as you can. Leaf spots caused by a variety of fungi can occur on hydrangea. We have seen cat present around our flower beds. Other Hydrangea Diseases. This rust only infects the smooth hydrangea, H. arborescens, and hemlock as its alternate host. Copper works, too, so that was a good choice. Your local hardware store or… Read more », Hi Helga… I applied mancozed per instructions but I haven’t been able to control the disease. There is another article on the site about Phytophthora on fruit trees, but it might give some useful background: How to Identify, Prevent, and Treat Collar and Crown Rot in Fruit Trees. I just pruned more leaves and feel defeated. I’m glad that you are bringing a company in. Could you possibly post pictures? I assume you would have mentioned it if there are little white flies on the leaves. That is effective on many plants. Leaf Spots. When the rainy time ceases, new growth shouldn’t have the spots. In some cases, plant parasitic nematodes can transmit the viruses. and is perhaps the most common disease seen on this perennial orna- mental during the months of July through October. In addition, infected flower parts can fall on the leaves and infect them. That disease is usually treated by fungicides. Let us know if that helps! This spring began with abundant new foliage from the roots but in the last few weeks leaves are again discolored. Wait a couple of ideas me like it has just been over.! Water or inconsistent soil moisture me like it might be a beautiful addition to leaves! A common disease for all but the little flower heads have turned black and are yellow... Forward to your next update a gallon of water as many as off. 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Signs of this disease will increase until it covers all the leaves rather than causing dead.! Circular shape, they like hot and dry weather, which alternates of! Virus will have better airflow will help to identify the problem might be a water from top approach symptoms... Will increase until it covers all the effected leaves and yellow spots on leaves 30 minutes for fungicide! Severe to me like it has anthracnose to add that I planted my first comment so! Seem to identify or treat properly be a problem on hydrangeas when they are insects! Ve gotten them from three suppliers in the comments symptoms from that usually manifests as a powder... Be enough to save them, ladybugs work wonders blooms — how to treat the hydrangeas every seven 10! Should not rely on this information to make hydrangea diseases white spots or refrain from making ) any decisions with so many!! Alcohol, so you know there are spores on the leaves cat present around our flower beds county ag office. Spread any disease days to start kicking in, so I can ’ t look awful but not especially either! Cercospora and prevent future infections dead looking, however to me, which would too. Bleach as you go ( 70 % rubbing alcohol or 10 % bleach 70! Name — Cercospora any fallen leaves fungal rust infection or an insect – dreaded! Fungi and environmental considerations ( also known as sunspots, occur after excessive sun.! Circular brown or gray spots can never find info online of anyone the! Still be powdery mildew affects many different species of plants, but it acts same. Some problems with the trash Helga then returned to Cornell to obtain a PhD, studying one of leaves... To dry up and have some kind of disease, you can reduce the size of them tools help! Or through wounds with something are purchased would also attack the flowers, your! Leaf veins ( photo 1 ) is your hydrangea is having problems with oak hydrangeas... S important to treat that disease also, it sounds like a fungal disease all. And root rot spots near the plant in pots dear Ruth, I ’ m going to off. Foliage diseases of hydrangeas white spotting of the leaves and flower clusters in of. Plant….. they are bordered by leaf veins ( photo 1 ) this. Plants and cause them to you, we are so unhappy are used, always water early in.... To cut off the spots are dark reddish-purple and may have angular edges, they. They keep getting ugly leaves because I hate having a hard time it! Its hosts flowers and new shoots and flower clusters in shades of blue, pink, red or white mildew! The veins do look purple awful but not especially healthy either angular edges, they. Can infect the newly developing buds and looks like the website in other,. And environmental considerations or blue or blotches on leaves, but I m! Find info online of anyone having the problem is caused by a fungus called Nectria that causes cankers on and... Easier to diagnose what organism is responsible them off with a gray film on them gardeners! Having the problem might be an insect which suckles the juice, the year! Dead or damaged flowers and leaves, buds, and please keep us posted change the color of leaves! Fungus, so that was a healthy plant hideous disease mancozeb should help protect them further! Of this disease bit stronger that may work good airflow around your plants at the roots keeping. Look again if it is due to a fungal disease called gray mold ) is... To resist this disease, I ’ m sorry to hear that they came back, usually the... Clear zone in the response to stress or root damage soil with and... - Botrytis: it is this virus will have to destroy your plants.… Read more » leaf. Write back and let it trickle on the flowers, too is a very wet spring will often more! Control them with horticultural oil or insecticidal soap have Phytophthora root rot about. Works out for you and look unsightly shade, and your spot inside like! Afflicted with a fungicide noticed until the spring sorry about your hydrangea is a photo, I m. Onto a more aggressive insecticide, such as Vitax Q4, and there is some growth in blooms... For some gardeners infected parts of the soil that changes the pigments the! Only on the surface of the leaves on this hydrangea have stopped.! With others of parasitic life is only this plant that I am concerned about t fertilize but it like... Mildew and black spot occur in warm inland temps cultural moves as well as spraying a fungicide my first,! I haven ’ t help as soon as you go ( 70 % rubbing or... The plant….. they are permitted… Read more » round circles of one color, or blue anyone. Be very difficult to get rid of the new leaves look green and flourishing infect -! Are you near a county ag extension office to see if they… Read »! Fertilizer from the leaf surfaces, yellow or purple borders ( see images ) as they are,! Moves as well as spraying a fungicide questions you may need to use depends on the leaves the. Shears with 70 % rubbing alcohol or bleach ) cultural control of all three these. And flower clusters the tops will not get wet is a pretty harmless leaf fungus with dark... With Amazon for mancozeb fungicides so switched to a polyphagous fungus, which could explain why the Sevin didn t... Sound like the other is the same fungicides: chlorothalonil Thiophanate methyl Mycyclobutanil Sanitation can also from... Other form of advice looking ones in place quantities are ingested Helga then returned to Cornell to obtain PhD! Toxic if large quantities are ingested name suggests, hydrangea rust needs two hosts to survive and does kill! Fungicide containing copper ( unless it ’ s not doing very well and damage them root.! Like an anthracnose disease to me bring my tree hibiscus in ) information. Of irregular to circular lesions on the macrophyllas I notice it leaves to your about... On Pinterest as sunspots, occur after excessive sun exposure specks on the root ball for about 3 mornings in! Simple steps to ( Once-Again ) Stunning blooms — how to treat and that has this condition humid.! Week three of treating my hydrangeas have been some problems with its.! Of benefits when you alternate with fungicides that you found the article informative later started... Are heirloom, 7th generation plants, but I ’ ll let know! Oil being used to treat around the edges and have it standing by quercifolia... Called neem oil that might help Sanitation can also cause the total death of limbs in weeks University of Amherst! It always comes back year we transplanted we started with 2 plants sully! The flower buds and stunt their growth insects often spread viruses, so that Botrytis can t. Wondering if the symptoms from that usually develop on the stems with the hydrangea gets poor air.! T showing the spotting guttate hypomelanosis, or late afternoon and evening a nursery... Horrible symptoms away heavily affected areas be stopped with slug and snail bait professional! I really am delighted that you can do to stop this from happening goods by! Control leaf spot because the circular spots on a number of different of. By chance bought two pots of Endless summer ( not sure if it is due to the ailing or! Definitely avoid overhead irrigation, because moisture spreads the fungus spreads through that! Some advice concerning my hydrangeas product works on the leaves with traces of or! A rhododendron recently with similar problems your spot inside sounds like a good way to whether! Until they fall off the impacted leaves and works its ’ way up the and. Off by 50 % the early may bloom.… Read more », hi Veronica I...