The portion of the tree which seems to be mostly affected by the damaged branches and leaves would be on the north facing side, all the way up from the lowest branches to to the top. Have you had any construction around it, or any trenching, that may have cut through roots, in the last 5 years? Start watering, and give it a long, slow soak once a week. The foam may small ‘beery’ or of rot. Any ideas as to what's happening and how I can fix it? Just discovered small black eggs(?) Tree Categories Tree categories on the left will give you information about the specific tree type and lots of great pictures of that tree species. thank you for your help. Once the top of the tree has been cut off, especially a very young tree, it may not reach its true height. If this is the only problem you notice, the tree may sprout a second set of leaves this summer, but they will be smaller than those on the "good side" of the tree. If the tree has to be cut down in the future, an unsuspecting person cutting down the tree could be injured. An arborist said it wasn’t dying. Hard to say at this stage, but have you had a late frost in your area, after the leaves came out? Typically, those are only resorted to on commercial plants and bushes like roses and wheat. Answer: You may trim the roots, but only if it hasn't started to leaf out yet. you should be able to go to the above link, which is another hub of mine and email me there. On the other hand, there is a lot of sap flow at this time of year, so if the liquid is clear, not-bubbly, and tastes a little sweet, it is probably just sap coming from the split. adroll_pix_id = "T5DEBSDHVFG4FA3KSLHHKJ"; Read here for more information. I'm not sure exactly what may be causing the lesions you speak of. I’d hate to lose it! All our other Norway's on the property are doing fine. 2 ft diameter)on our property got some kind of whitish mildew on the leaves and the next year the tree was 100% dead. I have a Japanese maple in deep distress. scientific literature doesn't support this one way or another, General Care of Maples: Managing Phyllosticta Leaf Spot Disease. Calling the nursery early in the year, I applied fish fertilizer, and the leaves that were there brightened, and thickened, but no new leaves on those problem branches. Temp is about 16-22 degrees normally. We’ll call the horticulturist again to come take a look, as I’m not entirely sure it requires removal at this point. In dying maple tree pictures, leaves may also appear to have bite marks or designs carved in them from insects. I have a 12 year old green maple tree. Parasites can attack the host plant in these damaged areas. I’m afraid I can’t say what that is – did you have a late frost, because it sounds a bit like frost damage. The leaves were falling off previous to that. Call your local Cooperative Extension office (your county office will have their number), and ask if they can help you identify what bug(s) are attacking your tree, and if the tree needs to come down for safety reasons. I have a recently planted autumn blaze tree (18-24ft) that has recently received a lot of rain. Taper the top and bottom so you have an elongated oval. Some of the trunk is a lichen color, like the lichens are part of the grayish colored trunk. I don't think your tree is dying- it just needs a little extra care. Taking it down does sound like a headache, but it will be several years at least before a large tree like that is definitively dead, and a few more after that before it becomes a hazard. Is this a disease? The feeding tunnel is in the heartwood close to the bark or cambium layer. Lovely tree – I have one in a container too, as it happens. Is there anything else that you can suggest? the tree is about 20 years old. These fungus are the most common maple bark diseases. Is this maple wilt? Please help as I do not want to lose these wonderful trees. Now a nearby red ornamental maple in our yard has suddenly shriveled up and looks dead after being beautiful and healthy this spring. Feel free to call your local Cooperative Extension as well- they can tell you if there is a disease or frost damage issue in your area. This is easily done during the winter while the tree is dormant. Same thing happened, lost the leaves and then the trees died. Any ideas why? Hard to say, although that is always possible. Perhaps this has been addressed elsewhere but I did not find specifically. Pictures of over 40 Japanese Maple Trees grown in the UK with links to much more detailed information of each variety. Powdery mildew doesn't often cause lasting harm to the tree that it's on because it just sits on the top of the leaf (as opposed to getting inside the roots or eating holes in the leaves). it had more dead than live limbs. Yes, the Bayer Advanced Tree and Shrub will get rid of them, but it may take a week to two weeks to totally kill them all. Trees live at a slower pace than us, so there is no urgency. It's actually a combination of algae and fungus living symbiotically. It’s late in the year now to fertilize, as the buds for next year will mostly be formed, but plan on feeding next year early, with a slow-release fertilizer. I should also mention that one of the worst branches for sap in the spring was on the south side. tall. Have them remove all the dead branches, and everything with that dark ring in the wood. This disease can be managed by removing all debris and dead leaves from around the trees before winter, as the fungus that causes it lives in the debris. I don’t see any aphids on the tree, and there are no spots on the leaves. I live in Northern Colorado. Maple Tree Gallery consists of two pages of maple images with an impressive maple tree photos feature and a maple leaf page.. Tree Categories. Some strains can cause cankers and blight. Don’t cover it, paint it, or do anything more. Any thoughts? I think this is aphids. Read on to learn what this disease is and how to protect your maple trees against it. I’m guessing, based on what I’ve read, that the roots are compacted. We have never had any problems and the tree is huge which provides the only shade in the yard. Is it a fungal problem? They come and go depending on the season, but the damage is purely cosmetic. Tree fungus diseases can’t be treated and cured, and so, as an essential part of gardening, it’s necessary to prevent it from developing. I have a maple tree in my back yard. They have been drippping sap since spring to the point we cannot park in our driveway without cleaning the windshield first. Treatment of these needle diseases must be based on the particular disease, the size of the tree involved, and the setting. Next, make sure your tree is getting enough water. Although these insects can cause Hi Jeff, It sounds like sun scorch. Your lawn feeding means your tree is getting a lot of nitrogen, which keeps it producing soft new growth longer into the season. We live in va beach, 5 miles from ocean and possible hurricane track. They inject toxins into the leaf, causing the leaf to form these structures, which create a nice, comfortable home for the mites. Though this hardy tree is a vigorous grower, the red maple is susceptible to several tree diseases, some of which could be harmful. any way to save it? Other types do exist but are rarer. My husband did tree spikes in the drip line and broadcast fertilizer in the fall. I'm not an arborist, but I am a maple syrup producer in NY. It had a brown soft center 3/4 inch in diameter surrounded by normal wood. Its showy red flowers appear throughout the spring and winter months. One of the worst diseases that your tree can get is verticillium wilt. I notice that even on the live tree small branches at the very top are now dead. He said to deep water it for a couple of weeks and I have, every three days, along with the normal daily lawn watering. Would the Bayer product work on this problem? The reason the leaves are dying is because of the stress, and probably lack of water, due to the split. To reduce spread, collect and bag or burn all the leaves – don’t put them into compost or mix with other leaves to mulch. failing that upload the pictures to flickr or picassa and then give me the url's. Cut across the stem at a sharp angle. I was told it could be Anthracnose, but uncertain how to treat it or if it is treatable this late in the season? Often this is first noticed when a branch starts to show fall colors in late summer, long before other trees begin to color at all. Black fruiting pods may appear on these leaves, which then cause leaf fall. Question: A big piece of bark fell off my large silver maple tree. Your thoughts? You happened to cut the tree when the sap had started flowing in spring (maple syrup making time!). So now the cars and deck are covered with sticky sap. Woodpeckers are active on the tree. We see leaves all over the tree including way up on top. The most common hardwood tree diseases and pathogens found on trees in the yard and a forest. leaves are now very lacey like something eating them have not noticed anything ??????? I did see one poster who seemed to identify with a like problem, but she never replied with pictures so an answer was never provided. Our other maple is not affected, & we did not put red bark-mulch around it. You shouldn't feel a pressing need to eliminate lichen because it's not harmful, but you can use copper fungicides if you don't want to see them on your maples. Luckily it doesn’t seem to bother the trees at all. Fertilizer is injected into the ground under pressure around the root zone. The newest in a two year-old coral bark maple. The right side (north) of the tree’s foliage/canopy/entire side is green leaves, and the left side (south) of the tree is variegated, which is what we always expect from this tree, not 1/2 green. It would be a shame to remove it if it can be saved, it has grown significantly since we planted 5 years ago, provides shade, appeared healthy until after that freeze/snow storm we had this year. Do you have any idea what this could be? They are not raised spots. I have a young maple that has little pointed tips on the face of all the leaves, they are about 1/4 inch long and there are about 10 to 20 on every leaf. Apart from tree diseases that affect the leaves, trees can also be affected by pests, fungi diseases and other damages. There are many kinds of maple tree diseases, but the ones that people are most commonly concerned with affect the trunk and bark of maple trees. Thank you. Cloud Mn the maple tree leaves have stiff grasslike growths on them spike like what is this? No sign of anything other than a few earwigs around the tree. . I might suggest having the tree fertilized with a deep root feeding – many arborists offer this. If it is just a modest amount, here is what to do. Leaf scorch seldom kills trees; deep watering is the recommended treatment. Charlotte Gerber (author) from upstate New York on June 07, 2010: Hi Mike in Houston, The problem your tree is experience is probably related to either not enough water throughout the growing season (the Japanese maple needs a lot! Cut some younger branches with dead leaves and slice at a sharp angle through the stem. Some variants include: This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional. The trees are very much alive and he said he did this early on I’m the year and they are still alive. A newly-planted tree is almost entirely dependent on the root ball that was in the pot, so water with a slow trickle beside the trunk, as well as watering the larger area to encourage the roots to move out. it is the only shade tree they have. There are several damaging maple tree diseases and pests. Had a tree guy over he said to cut it down. This typically happens at a spot where the insect feeds on the tree. Any help would be amazing. It should be budding out by now, and that discoloration sounds bad. Everything seemed to be fine but now most of the leaves are dead (dry up and turn brown) on one of the larger trees and the other one has lost a lot of the leaves in the top 1/3 of the tree. Sorry about your tree. If this is the case, the tree will bounce back from the injuries, though they may look a little ugly until the tree ages a few more years. Have you had any excavation done in the garden in the past few years? Notice that the black areas are very black, and neater in shape. Thanks for any help. There may be one or several spots on each leaf and leaves with a lot of spots may turn yellow and fall prematurely. No more sap noticed since then despite other new cracks each year. It’s really bad. Your tree(s) should recover if it is kept well watered during drought conditions. Thanks Tim, glad to help plant lovers. I understand that there is nothing that can be done for wetwood but will see what his opinion is on the rest of the issues. Where the leaves curl it can be just the "toes" of the leaf or the whole leaf. What can be done. could it be from lack of moisture? Hi I have a red maple,,,, the truck has a split in it and it looks like something is seeping out,,how can i fix this? Taking a long time to die is typical, and suggests a weak form of the fungus, so the odds are better that you will be able to lock it inside successfully. That is a great shame. Help….what can we do? I don't know much about trees but I'm worried about them. Don't plant any more maple trees until you have an answer as to what is causing the problem. Diseases And Pests Evergreen Trees Informative Tree Care Insect Pests of Pine Trees Pines – big and small – were the subject of a recent blog, and they are beautiful trees that bring a unique look to any garden, with so many to choose from. How do we treat a very large sugar maple (25 years old?) I planted a maple tree last yr and it budded out and was leafed out really well and then all the leaves shriveled up and turned brown what caused this ? Sorry you are losing a mature tree – it is always sad when that happens, but this disease is hard to control, and does destroy a lot of trees. should I spray the tree for the insect? When I worked as an editor of a gardening channel, people often asked me how to identify and address common maple tree pests, diseases, and problems. Yes, the spots in Tar Spot can be raise – thicker than the leaf – it’s normal. This year several large branches are dead. If that is a problem where you live, the braces may not work, but regardless, it is worth a try. Also, I'm curious as to why one tree sprouts pods (Problematic Tree) and the other one doesn't given the trees are approx. Nov 21, 2014 - There are many kinds of maple tree diseases, but the ones that people are most commonly concerned with affect the trunk and bark. If the tree is as showing as much damage as you say, I don’t think it will live much longer – sorry. Just a side note- are there a lot of birds/pigeons in the area you describe? They float around and makes everything sticky and gross. is the soil type the same in their different locations? This sounds like another case of verticillium wilt, which has become a serious and spreading disease of maple trees. Should I be looking for an arbourist to do something regarding the roots and, if so, what would you recommend? . Some people have claimed to have success with pesticides and miticides, but this remains to be scientifically proven. Now the waiting game begins- most maples can leaf more than once when they are stressed, so your tree may show improvement by July. If the leaves are healthy it should be fine, and hollow trees can live for a very long time. Hi Eric, The tree is savable, but it also depends on how much you want the tree, and is it aesthetically pleasing. Yes, pruning/shaping the tree to reduce the weight on the limbs would definitely help. Any ideas. By now they are probably spread around, ready to release new spores. It is caused by a soil-dwelling fungus that is very difficult to eradicate. If that 2-inch wide strip is more than 1/3 of the trunk diameter then it may not be worth trying to save the tree – but you can give it a go. The sap dripped profusely where we cut the two branches, and the next day the bark turned black. Trees of that age, despite their hydro trimming, are usually pretty durable unless it is verticillium wilt, which you can’t really do anything about anyway. Second, contact your county Cooperative Extension office- they can visit your tree to make a correct diagnosis of the problem. Are other red maples in your neighborhood affected too? I would also remove the plastic from around the tree if it is still there as it can harbor pests and encourage fungal growths. The most common Japanese maple diseases are caused by fungal infection. You have two choices: since the trees are still young, if you don’t mind the cost of replacement, I would replace them – because of the long-term effects, which can be future girdling of the trunk, killing the trees at a much older age. The plant is still in it's pot but it has been kept watered - not that it's particularly sunny or hot here. Sometimes sapstreak means a slow death for the tree, over a period of many years. It is too bad if they're causing trouble for you, since they're great shade trees. This means the mower guy doesn’t have to come anywhere near the trees, and it will also conserve moisture and provide some nutrients. About a week after noticing that, we now have wilting of new leaf growth at the ends of many of the branches, spreading in toward the center of the branches – they are yellow in color (the Sensation surprises us every year, the leaf color is different every year, and fall colors are also very different) – we cannot find any insects on the leaves or trunk. ), or it is exposed to a lot of wind. At this point, they cover the driveway, the back deck, and most of the back yard. PS: I have to sadly also mention that the soil in my yard is not of the best quality since we have to fight a lot of weeds and do a lot of work to get our yard green. You can also apply fungicide, but you may need a commercial application depending on the size and number of trees that may be affected. Your saying it runs the length of the tree suggests that. I do not remember any odour to the sap back in the spring just that it was a golden honey brown colour. Though, similar to any other maple tree, the autumn blaze maple will fall prone to common diseases and attacks by insects, pests, and fungi. When you say branches are dying, do you mean losing leaves, or has the wood died? Infections capable of killing these plants tend to attack a tree’s internal systems, invading via the roots. Older maples tend to leaf out on the outermost part of the branches, while the inner parts of the branches have fewer leaves and small branches. Which I didn’t start putting down until a couple years after we moved in and started my gardens. Hi, I've been planting sugar maples (small 18-24 inch saplings) on my property in Michigan for 5 years. Take a few branches with curled leaves, about an inch or so in diameter. It is just that what you describe sounds like Ash tree flower gall, a common problem caused by a tiny mite. As well, there are so many to choose from! As well, create a circle around each tree, 3 feet across, with no grass. Please help. Answer: I don't believe that you damaged or killed the tree. we’ve had a lot of rain and it looks as though it has some type of rot going on. Any suggestions? I think you have a Crimson King Maple, if it has purple leaves, but I have never seen white spots on it. Do I need to water more; if so, how much? . I planted a Florida Maple tree that I bought at a nursery over the weekend. Though sunset maple trees, often referred to as 'Red Sunset', are prized as the most successful red maple cultivar, issues may still arise. If so, it could be Verticillium wilt, which could lead to death of limbs or the whole tree. APHIDS AND JAPANESE MAPLE TREES IDENTIFICATION Aphids are tiny insects about 3mm long with the most common types being black fly and green fly. This late in the season the tree doesn’t really need its leaves anymore, the buds for next year are fully formed. Whether you don't have any idea what anthracnose is or you don't know how to identify lichen, you'll find all the common issues below to help you understand what's plaguing your tree and how to treat the problem. Maple Wilt. many of the limbs have also developed green algae extending from the bottom to top and not on the north side as might be expected. I suggest deep root feeding with high nitrogen fertilizer – as suggested to another poster. This has become increasingly common in many areas in the last few years, due to a series of damper summer, suitable for the spread of this fungus. Anthracnose is different from leaf scorch in that the browning occurs in random spots on the leaves and along the veins. Is it green underneath or brown? Hi Annie Papas, I would definitely say that you have a fungal infection, however, I'm not sure how to tell you to treat it, since I'm only aware of US laws regarding fungicides. Maple wilt is one of the more serious maple tree diseases. Thanks again. Treating the trees is usually not affective because the spores can travel from a neighbor's tree onto yours. Physiological leaf scorch is the most common. adroll_current_page = "other"; I have a 20" maple tree looking very good leaf wise with little or no dead lims/branches. Thank you. after i noticed this happening, i started watering the tree alot. The difficulty of the identification process depends on Maple trees are known for their fall colors, and the Amur maple certainly lives up to this reputation.With a variety of names like 'Flame' and 'Embers', this small tree (or large shrub) will set your yard ablaze in autumn with its red or orange leaves. Informational table showing disease name, symptoms, pathogen/cause, and management of Maple diseases. You are not going to lose your trees. I have a picture but cannot post it and all my research is not telling me what it is. Leaf color in red trees is influenced by shade – they turn greener in shade. The tree should be removed, and the wood burned, not chipped, which can spread the disease around. That would be 100% confirmation, although it doesn’t always show. Trees with variegated or colored foliage are often prone to reversion – a return of some sections to the original green form. You can let the mildew sit, and it may resolves itself. Your tree is probably healthy - it was just a prime year for seed production. If so I assume we would have to wait until winter for a pruning? Any advice that you can offer would be helpful. If you Google it you will see many photos to confirm that. Could it be something else? Sometimes a disease can’t be prevented, and often can’t be This is a common disease in certain years – then it goes away for several. There are a few diseases that can occur and it is helpful to be able to recognize them and even more helpful to know what steps can reduce the chances of them occurring. There are a few Japanese maple diseases and several insect problems with Japanese maples that you should be aware of to give your tree the care it needs. Hi, I’m learning a great deal from the questions and your answers here, thank you! Other Japanese maple pests are scale, mealybug and mites. Four years back our newly constructed home came with two maple trees in our front yard. is this tree dying and should they ask owner to have it taken down. Leaf scorch seldom kills trees; deep watering is the recommended treatment. If it is more limited it could be sun scorch from winter sun on a cold day, although that usually happens on the east side. We have two 25 year old sugar maple trees in our yard – always beautiful. Did we damage or kill the tree? We have many Maple's in our yard and it could have been any tree but this was our favorite! This is a much more serious disease that affects all kinds of maples, but Sugar Maple and Silver Maple are the ones most commonly affected. A tree that old is not likely to give up with one bad event, unless it is Verticillium, which gets in through damaged roots, hence the question about the ground around the tree. The tree is leafing well but not growing good. Is it growing in a shady spot? Lots of water and perhaps a little tree fertilizer should help your trees survive the summer. Get a very sharp pocket knife and carefully trim each wound, removing anything rotting or brown, until you have a clean, light-colored (white or green) area, with no ragged bits, and no bark that is not attached to the underlying trunk. I want to know if I need to feed the tree or what I can do to make sure I don’t loose it. The damage done by this disease is mainly cosmetic. Charlotte Gerber (author) from upstate New York on July 11, 2010: Hi Randy, I'm guessing that the leaves have spots, like tar spots? On a terrace in a pot the roots and/or buds could have frozen and died, so give it a bit longer, but if nothing happens – like new buds developing on the stem – then it’s still time to go shopping. Google some images and see if it looks the same. Is my tree dying. Everything was fine - in the last week we had one savage windy day. Is there something I can do?? It was about three feet or so high over the winter but is now at least twice the size. . The best way to prevent these in the future is to do a good fall cleanup (assuming you don't have dozens of trees, or an untidy neighbor). In either case, both of these are pretty harmless in the long-term, and vary from season to season, depending on the weather. When I looked closely I noticed that where the stem of the leaf joined the main part of the leaf the stem had darkened and started to shrivel. Leafscorch occurs around the perimeter of the leaf. There are two things that come to mind when I hear "white fungus" - powdery mildew or heart rot. Hi Paul, The foam insulation idea is intriguing, I've never used it in that way! I hope you have some thoughts and suggestions. You should in time see new tissue start to grow around the edges, and eventually the whole area will cover over with scar tissue, and finally disappear almost completely under new bark. However seeds can be externally contaminated, so seedlings can become infected. Thank you! Since Verticillium enters through damaged roots, it is important to try to not damage the roots of your maple trees. On the other the bark looks all craked all the way around as if it is peeling off and the last one has a small hole with rot but looks fine other than that. We lost a 35 foot Bradford pear tree to Florence which dominated our front yard, providing shade for everything else. Both trees were planted in new home subdivisions where the topsoil was replaced with basic dirt. The living tree has light yellow/ greenish leaves. I don't think I would use cement though, only because eventually it will crack/pull away from the tree when exposed to the weather after a few years. We just put red bark-mulch around it, and that’s the only thing that’s different. Fungi overwinter in leaves left in the yard, which will guarantee the same problems again the following year. I am very attached to my baby tree and want to see it survive. Sprinklers are fine during normal temps/conditions. After any windstorm there is always a plethora of these small dead branches scattered on the ground. I have a a 50 yr old silver maple whose leaves began falling shortly after sprouting this spring. This is a pretty common diseases in cool, wet springs. Then why are my trees the only ones not growing :(. Those sound like male flowers that have of course died by this time. Is this normal or diseased. Over the past 5 to 10 years the tree has thinned out considerably. Learn more about the symptoms of maple leaf blister and maple anthracnose, two foliar diseases of maple trees that can appear in late spring on the same tree. I am ready to give up.....help! I know, we all love trees until something goes wrong. Common Diseases of Maple Tree Limbs. cazzart from England , west Yorkshire on April 25, 2011: could anyone help.. If you watch out for diseases and know how serious they may or may not be, you will enjoy your tree for many years. Be sure to wait for a good weather day to apply the fungicide, with little or no wind. You are better off using foam that expands and covering it with a screen to prevent animals and birds from removing the foam. To avoid the diseases, you should use appropriate soil for tree planting. 34 year old hard maple 60 ft. high X 60 ft. dia. Mower/string trimmer damage is a major cause of long-term issues with trees. It comes and goes with the weather, and can be around for several years and then disappear for years. The tree is about 41 years old, & we planted it. Most fungal growths are brown or black, not white, on maple trees. If you are already losing foliage and branches, it doesn’t look promising, but take a ‘wait and see’ attitude, as you can’t do anything anyway. Anthracnose Anthracnose (Discula spp., Kabatiella apocrypta) is a name for a group of diseases caused by several closely related fungi that attack many of our finest shade trees. The first few years we loved them as they did not produce “keys”, but about 5 years they started producing “keys”. This spring it was very late sprouting its buds and the leaves are now sparse and smaller on the lower half of the tree. Mapping your maple trees, tapping them for syrup and making homemade maple syrup are part of maple syruping. These insects carry plant pathogenic fungi. We live in NW Indiana and have several groves of possibly 35 year old silver maples,last summer we took down one with a triple trunk because between the trunks was some kind of nest that formed rather quickly. My sugar maple is producing less leafs and the ones that are on the tree are smaller than they use to be. Leaf scorch can be remedied with deep watering during hot or windy conditions. No there is nothing you can do, except pray for different weather. When inspecting the tree I noticed several of the ends of the branches had a small insect stuck to them. The leaves stay green only for a month or two and then start getting yellow and fall off much before Fall. All necessary for Pest Control https://amzn.to/2rLU5CG --------------- Maple Tree Diseases With White Spots on the Bark. If the tree leafs out normally, then no worries. Dieback generally around the crown; external signs appear long after the tree has been infected, Try to prevent the roots from getting damaged or wounded; some trees recover for no apparent reason, Ten to brown spots with a purple or red center. If you're still unsure whether your tree has anthracnose or not, contact your county Cooperative Extension office- they can come out and examine your trees to make a correct diagnosis. If that would make the tree aesthetically unpleasing, you probably should just cut down the tree. it starts where the leave is attached to the leave stem. This year the die off is extensive and we have lost 75% of the leaves on the entire tree. http://www.extension.umn.edu/garden/diagnose/plant... http://plantclinic.cornell.edu/FactSheets/barkspli... maple bladder gall (caused by mites, looks like pimples, likes silver and red maples especially, usually appear in May), maple spindle gall (caused by eriophyid mites like. This stuff seems to be on the lower 1/3 of the tree. Half of the tree has leaves. It does sound like Verticillium wilt, which Norway maple can certainly get, is a possibility, but it could simply be natural loss of lower limbs – since you say the upper growth is good, and that is usually where Verticillium symptoms show first. Should I be worried? Galls are abnormal structures formed when a plant's hormones mix with an insect's. It doesn't seem to be any particular size of leaf or location. adroll_adv_id = "RK545AVNKVEJFFRYPAE7DC"; Japanese maples in particular, but other maples too, especially when young, can suddenly have the leaves dry out, first around the edges and sometimes the whole leaf. Please check this link from the US National Forest Service: www.na.fs.fed.us/fhp/alb/. What should I do? The trees have always been healthy, dark nicely shaped leaves and beautiful and they appeared to have the same amount of leaves as they always do. Maples can show several different leaf-spots that are usually brown, scattered all over the leaf and sometimes join together into larger areas of dead tissue. Had an early bloom time in spring, followed by a very unexpected freeze/snow storm. The stress can weaken the tree and make it more susceptible to a wide range of diseases. This involves injecting fertilizer into the soil around the root system, and can cause a tree to ‘grow away’ from the disease. Alternatively, you may also contact the Cooperative Extension office in your area (the closest one is probably on the OSU campus) to see if someone could come look at your tree to make an on-site diagnosis of the problem. Verticillium tends to strike on single limbs, not all over. A new larger crack in the trunk appeared (the bark has fallen away from the crack revealing cream-colored heartwood), but it also has what we assume is wetwood, there is a vertical streak of black about 6″ in length on the heartwood, NOT on the bark. many of the limbs and top part of main trunk is white. You have to be vigilant from the beginning and remove any all-green shoots (which are always produced, every year) before they take over the tree – which yours has now done. Changes in level? Also, there has been no construction around this tree. In addition, if the leaves seem smaller this year (and perhaps last year as well), I believe it may be due to the late frosts we've had. . Does this tree have a single trunk? Question: Why aren't my Purple Maples purple? can damage a tree. There are many other species of shade trees available with fewer problems that will provide beauty in the landscape. If this area covers a lot of the diameter of the trunk, explore with your knife, and if it is mostly brown underneath, then I am afraid it’s time to go shopping for a new tree. The most common maple tree diseases come from fungus that causes cankers on the bark. Boy, that’s a lot of issues! Fortunately, it's not harmful because it feeds off of the air rather than the trees. The leaves often show the first signs because they're one of the last tree parts to get water, thus they show under-watering signs first. This year also noticed that leaves have black and brown spots on edges of leaves and they curl up and die. Although the tree is a good 7 feet tall now, this rapid dying off of leaves on adjacent branches is spreading around the tree. Verticillium wilt inhibits water flow while producing toxins. It does sound like verticillium wilt – but I suspect the condo will want an arborist report to confirm that it is, indeed, doomed! As for the tree not faring well, it probably will rebound since you have taken steps to correct the exposed root. When the bark is coming off of a tree, and there are woodpecker holes, along with dying limbs, it usually means the tree is dying. Tar spots may cause premature defoliation but are not known to kill trees. Charlotte Gerber (author) from upstate New York on August 29, 2010: Hi Indoor Greenhouse Guy- Thanks for the kudos! I ask this because it sounds like Verticillium wilt, and those would be supporting bits of evidence. or is it slowly dying? This has infected the entire tree all the way to it’s estimated height of 150 feet. Also, once it is in an area, it spreads. You had a very cold winter up there this year, yes? a fine powder-like mildew that covers leaves; white-ish in color, Summer; thrives in greenhouse-like conditions (humid and hot). Maples are among the most popular trees for the garden, especially as shade trees. 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