Last summer the leaves started to turn and fall early. Any information you can give me would be very helpful. It's been in my front yard growing very well for the past few years, and stands 10+ feet tall now. Indoor Greenhouse Guy on August 29, 2010: Wow, you've put a lot of work into this Hub, thanks for a great resource! Woodpeckers are active on the tree. I recommend you to try pest control services from maple pest control inc. in Toronto area.I found lot of fantastic information about pest control on your blog. I have put ant powder and insect replent around it. If possible, get this tree planted ASAP in an area with as little wind as possible. Fortunately, it's not harmful because it feeds off of the air rather than the trees. This is the escape tunnel. It tolerates both very dry and moist sites but grows best in moist well drained soils. I live in downtown Chicago and for this summer almost all of the maple trees in our neighborhood have developed white spots on the green leaves. Hi Mike, I suspect, based on your location, that your maple was anothr casualty of this year's late frost. Charlotte Gerber (author) from upstate New York on January 06, 2011: Hi Jerry, So sorry for the delay in responding to you. Thousands of new, high-quality pictures added every day. We have lived in our house in Pennsylvania for 20 years and have never experienced this problem with our trees. Though sunset maple trees, often referred to as 'Red Sunset', are prized as the most successful red maple cultivar, issues may still arise. The disease is spread through the ambrosia beetle and can easily kill the host tree. Due to the huge wind we put all the trees and plants together in the most sheltered part of the garden. From what I have read watering should not be required for a well established tree in our area (we also had a very wet spring)and I am worried the tree has reached the end of it's life span. There are over 30 common tree diseases that contribute to health decline and death of most of the trees in the United States. Hi. Hi -- I have a red maple about 60 years old. Our well established maple tree has developed an orange-sized black moist spot on one of its exposed roots. If you're on a budget, you can also call your local Cooperative Extension office too (assuming you're in the U.S.) - often they'll come take a look at your tree at little or no cost. As for the red/black spots, I agree - they're probably galls and those don't cause the leaking sap problem, nor will they kill your tree. Answer: My first thought on this was cottony maple scale, but it seems early in the season for this particular problem. Come spring, your red maple tree will put on yet another show when its beautiful red flowers and fruits emerge. Call your local Cooperative Extension office to see if they can come out and take a core sample to test. Hi Bob, Sap is common; it doesn't signal the end of the tree's life though. Over mulching – Poor mulching practices can cause the bark around the base of the tree to crack and fall off. Around late May, after a very wet spring, he noticed that it was developing spots. and maple velvet gall (caused by mites; looks like a red velvet patches on leaves; primarily found on silver, Norway and boxelder maples). Charlotte Gerber (author) from upstate New York on September 20, 2010: Hi Bruce, There is a borer beetle that likes maple trees - the Asian Longhorned Beetle. Other maple tree diseases and pests include: Root rot; Gall mites; Cankerworms; Aphids; Cottony scale; Petiole borers; Leafhoppers; Boxelder bugs; Many of these insect and disease conditions can weaken the tree and lead to … Did they occur as a result of a hard frost or a period of freezing weather followed by a warm thaw (or vice versa)? From helicopters to leaves to the sap... One arborist said you don't see too many maples reach this age and be relatively healthy. Additionally, the pot is causing restriction of the roots, which is contributing to the problem. It is too bad if they're causing trouble for you, since they're great shade trees. Although, cankers are unsightly, most will not kill a tree. I am not sure if it is related but a few years ago another large apparently healthy bigleaf maple (a local native species. I have a mature maple ( about35 - 40 years old) This year the leaves a much smaller than normal. So this infection isn't necessarily a death sentence. 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. Reading your other posts you state trees can leaf out more than once in a season if they are stressed, should we be giving up at this point? One of the most abundant trees in America's forests, red maple (Acer rubrum) makes a statement in the garden with its big canopy of wide, hand-shaped leaves. Charlotte Gerber (author) from upstate New York on September 01, 2010: Hi Ken, It could be several things, from scorch on the leaves (occurs in dry weather, high temps or windy conditions) to anthracnose (there's more info on this in this hub above). I am suspicious that I have some form of insect boring intop the branches (based on looking at a couple of these branches where they final broke off - This usmmer a health brach came down and you could see where something had basically cut it through part way - Lookinf for suggestions if there are any on treating the tree to keep this from continuing - the tree is starting to look thin. The Connecticut Agriculture Department's ", Agriculture and Natural Resources, University of California's ". We have a young Sugar Maple (4" diameter) that has looked healthy for the 10 years that it has been planted in our back yard. Question: A big piece of bark fell off my large silver maple tree. I think the Bayer Advanced should help with reducing stress to your tree. In either event, I suggest you contact your county Cooperative Extension office and request that they investigate it. Lee Curtis from London, UK on March 20, 2011: New constructions near established trees sometimes affect the tree, compaction of the soil. This is best done by a professional- especially if you have a large tree. You happened to cut the tree when the sap had started flowing in spring (maple syrup making time!). Just follow the directions for diluting the product exactly, so it is safe for your plants. This condition you describe is sometimes caused by a late frost followed by a rapid thaw, thus causing splits in tree trunks. 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. The bugs seem to be gone. It doesn't seem to be any particular size of leaf or location. The taller it gets, the longer the roots are going to be. 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. Charlotte Gerber (author) from upstate New York on July 03, 2010: Hi Sam, Some maple trees this past spring experienced die back due to a late frost/cold snap. Certain branches are not leafing out anymore and the tree just isn't as full as it used to be. If that would make the tree aesthetically unpleasing, you probably should just cut down the tree. Charlotte Gerber (author) from upstate New York on September 18, 2010: Hi Mary, Here are several things to consider: Leaves that are dry and curl up around the edges usually have sunscald. The tree looks so good but how can it survive? About 1 month ago, the tree was staked down and during a storm the top 1/3rd of the tree snapped off as well as a few lower branches. While sooty mold mainly affects plants and trees that honeydew-secreting insects love, the mold can also effect maples. It kills sucking insects, which are causing the "honeydew" (sticky, syrup-like substance) on your trees. The leaves look fine, but they are all sticky. Heart rot will literally rot away your tree, in many cases destroying a tree within a season or two. The leaves stay green only for a month or two and then start getting yellow and fall off much before Fall. This is the second year I have noticed this. Four years back our newly constructed home came with two maple trees in our front yard. Basically, what I'm trying to find out is whether I have an insect problem or the tree isn't receiving enough water. Tree growth slows. Most leaves have them and they are sprinkled around the bottom portion of the leaf, closest to the stem. Also, don't use concrete to fill a hole. Maple Tar Spot Treatment Because of the way maple tar spot disease is transmitted, complete control of maple tar spot is virtually impossible on mature trees. If the rest of your tree looks okay, I suspect that it was just to do a late frost. In addition, try using a one-time application of a tree fertilizer to help your tree recover more quickly. a fine powder-like mildew that covers leaves; white-ish in color, Summer; thrives in greenhouse-like conditions (humid and hot). Severely affected trees may exhibit leaf loss. My maple leaves are much smaller, for example, because the initial set of leaves were hit by frost right before they opened. Your Life has called and left you a message: get one, and spend less time surfing the Internet. We have three Maples at the end of our garden and I think they're about 30 years old. Growing Japanese maple farther south can result in these trees experiencing leaf scorch. Follow the directions closely using these types of products so you don't burn the tree roots. Eutypella canker – The cankers of this maple tree fungus looks similar to Nectria galligena canker but the layers on the canker will normally be thicker and will not peel away from the tree trunk easily. To treat mealy bugs/scale, I've found the easiest way is to use Bayer Advanced Tree and Shrub. However, I'd say about 60% of the leaves are fine and 40% have this curling problem. after i noticed this happening, i started watering the tree alot. These cankers can become slimy after rain or dew. A tree service with certified arborists on staff will be able to help you identify and treat sick trees. Check out my slideshow at the beginning of my article- slide #7 is a photo of this type of gall. Diseases. Answer: Leaves on most maple trees appear green because they absorb a lot of chlorophyll. My tree each year establishes pods a few weeks prior to leaves emerging. Sapstreak isn't easy to catch because it mainly affects the inside of the tree. They are slow to establish, have poor branching structure and, most importantly, they are susceptible to long-term trunk injury or damage, which results in internal rot and decay. Abnormal growths, or lumps, on tree branches and stems are usually galls. This is because bark diseases of maple trees are very visible to a tree’s owner and are often bring about dramatic changes to the tree. They are slow to establish, have poor branching structure and, most importantly, they are susceptible to long-term trunk injury or damage, which results in internal rot and decay. Verticillium wilt, common to all species of maples, attacks the tree from infected soil, where it may lay dormant for up to five years. 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. many thanks for your blog it is great! Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. All my research says the tree is stressed, but I cannot figure out why. Do you know what is wrong? I don't think your tree is dying- it just needs a little extra care. The other halh of the tree is what I believe to be dead. At this point, they cover the driveway, the back deck, and most of the back yard. This typically happens at a spot where the insect feeds on the tree. Typically, they appear as localized, sunken, slightly discolored, brown-to-reddish lesions on the bark of trunks and branches, or as injured areas on smaller twigs. This tree is planted next to a green maple that has no residue. the same age. Noticed a patch of missing bark about 14" in length by 6 inches in width, at the bottom of the trunk, lots of pincher bugs/ants falling out of the surrounding bark. The roots are usually as long as the tree is tall, and often much longer. Thanks for your response about the split trunk being the likley cause of stress to our Japanese maple. However, it inflicts much more extensive damage because it affects both the leaves and the branches. This list of tree diseases causes most tree health problems and death and are very specific to either a conifer or a hardwood host.. Last fall, my husband and I planted an October Glory Red Maple in our yard. Some trees are more susceptible to certain types of galls than others, and some galls occur only in certain regions of the country. Sounds like you're the go to guy for maple problems! High winds also help it migrate. You can find this particular product at your local lawn and garden store or megastore with a garden department. About three years ago, it started losing some of its bark, just flaking off. Maple spindle gall (left) and maple bladder gall (right) are common cosmetic issues that plague maples. It affects the tree's vascular system, which usually kills the entire plant. is there any environment changes around the tree and its canopy or root system? The only problem I can foresee with this is continuous high winds. I have a couple autumn blaze maples that started to leaf this spring, but then lost it leaves and now only has leaves on part of the tree on one and almost none on the other. Eventually you should plant the tree in the ground. The trees in my neighborhood have finally lost all of their leaves, and I noticed that my 2 maples have a lot more seeds than any others in the neighborhood. It only needs to be applied once a year. is arrested and recovery ensues, even in trees with more than 40 percent crown dieback." The tree should recover, though it may be a month or so before you see any improvement. Two symptoms of verticillium wilt are yellowing leaves and wilting leaves. Would the Bayer product work on this problem? A fungus disease of the Red Bay, Avocado, and other trees that stops the water flow within the host tree and causes the leaves to wilt and die. Tree Diseases in Maples. 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