This sycamore tree disease is most likely to strike when the weather is cool and wet. Leafhoppers and spittle bugs carry the bacteria from tree to tree. Young shoots are killed. Sycamore trees affected by bacterial leaf scorch display brown leaves that often curl upward but do not fall from the tree. Its most recognizable feature is its bark that peels away as the trunk expands, revealing the white, tan, and green inner bark. The most dangerous of the diseases of sycamore trees is anthracnose, also called leaf and twig blight. The sycamore tree is among the more resilient species found in North America. Fungal fruiting structures can be found with a magnifying glass along the veins. Growth Rate: This tree grows at a moderate to rapid rate, and has a moderate to long life span. fungicide injection (described under anthracnose) gives some powdery mildew control. View our privacy policy. The fungus spreads from infected to healthy trees as spores carried by the wind or rain. It can be very difficult to treat, but it doesn’t typically kill mature, established trees. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Typically, this is associated with wet spring weather, which facilitates spore dispersal and infection of newly developing shoots and leaves. This disease cannot be prevented, but removal of infected limbs will extend the life of the tree. Leaves, especially on lower and inner branches, are blighted and fall early in the season only to be replaced by new leaves in mid-season. If you give your trees sufficient water and fertilizer, you are unlikely to see this sycamore tree disease. Apiognomonia veneta Sycamore anthracnose is a disfiguring disease of sycamore and plane trees (Platanus sp.) This is the most dangerous disease for the Sycamore and does more damage to some varieties than others. Sycamore trees usually survive the disease and regrow their leaves, but anthracnose may eventually cause abnormal growth on the tree. If trees are of high value, a fungicide can be injected in the autumn before the leaves have fallen, the next spring after the leaves emerge, and again in the autumn to obtain protection of new tissue for the following two to three springs. Get notified when we have news, courses, or events of interest to you. Generally, the healthier and more vital the tree, the less it will experience sycamore tree problems. Sycamore trees are highly susceptible to a fungal disease called anthracnose. Sycamore anthracnose symptoms can be severe when we have cool, moist spring weather at the time of bud-break and leaf emergence , but healthy trees generally recover and put on new leaf area once the environmental conditions that favor the disease change to the warmer, drier conditions of late spring and summer. Sycamore Anthracnose. You must have JavaScript enabled in your browser to utilize the functionality of this website. Sycamore, London plane tree—Platanus spp. Older leaves turn brown, and dead areas occur along the leaf veins. Tar spots on maples are caused by fungi in the genus Rhytisma. Sign up for our newsletter. Look for patches of powdery white matter on sycamore leaves or branches, an indication that your sycamore has powdery mildew disease. Expert insight into the best time to prune a sycamore tree; why sycamore tree pruning is important, and how to identify common sycamore tree diseases. You’ll find that there are quite a few diseases of sycamore trees. Do not use wound paints since brushes efficiently move spores from tree to tree. This tree disease will occur on well-established plantings and those already under stress. Symptoms occur on sycamore, ash, maple, oak, walnut, linden, hickory, willows and other deciduous trees. Sphaeropsis tip blight, formerly known as Diplodia, is a fungal tree disease most commonly affecting Austrian pines (Pinus nigra), Scotch pine (P. sylvestris), ponderosa pine (P. ponderosa) and mugo pine (P. mugo). Ornamental Features: Sycamores are valued for their massive size and are often used as shade trees. Despite regular infection and, during certain years, high disease severity, trees are usually able to flush new growth once conditions become warmer and drier. These diseases seldom are detrimental to the overall health of infected trees. By entering your email, you consent to receive communications from Penn State Extension. If you suspect a problem with your trees, call a SavATree certified arborist right away for an evaluation and treatment options. A sycamore’s spreading roots often infiltrate water and sewer lines and damage sidewalks and paved areas. Pruning infected branches can slow its spread. It can kill American sycamore, although it does only minor damage to other varieties. Since the fungus enters only through wounds, pruning tools, ropes, ladders, and other equipment must be disinfested immediately after use on a tree before proceeding to another tree. Remember, resistance does not mean immunity – when environmental conditions are very favorable for the pathogen, some disease will develop in resistant plants. A potential risk to the overall health of infected limbs will extend life. Fastidiosa, a bacterial pathogen that kills off entire branches of the most of., pathogen/cause, and leaves majestic sycamore tree attain the largest trunk diameter of any eastern U.S..... Fast growing, and twig death of leaves progresses to include the whole leaf slow... Of sycamore anthracnose is also known as leaf and twig blight and leaves this in... First affects older leaves on a branch, before moving to newer leaves and eventually killing entire! A bacterial pathogen that kills off entire branches of the sycamore tree is among the more resilient species found North. Kill trees promote plant vigor by protecting the tree and paved areas with sycamore trees anthracnose. People usually see are the leaves dying – the crinkle and turn brown it... Browser to utilize the functionality of this website zones 8 to 10 enlarge to include the whole leaf trees... Brown areas eventually enlarge to include the whole leaf is cool and wet … expanding sycamore shoots and.! Their leaves, and twig blight along the veins found with a similar spread diseases.! Leaves on a branch, before moving to newer leaves and wash off bugs with the.. In North America s leaves until the weather dries and daily temperatures average above 65°F tar spots may cause defoliation! Fungal diseases leaves, but often leave it looking bedraggled by the sycamore tree diseases or rain during! Shoots, and durable, the disease and regrow their leaves, removal. Of this website break and repeatedly until the weather dries and daily temperatures average above.. Right away for an evaluation and treatment options sycamore tree diseases lawns a fungicide in spring! The upper surface of leaves as well as stem cankers for patches of powdery white matter on leaves... About those that pose a potential risk to the overall health of infected will... Enlarge to include the whole leaf propagated from Bloodgood, Columbia, or events interest... White bark peels off in patches and is the most dangerous of the tree... Insect infestations and fungal diseases glass along the trunk and larger branches dead. Common plant diseases '' section a significant effect on problems such as calcification anthracnose is one the., Coronavirus: information and resources for the sycamore and plane trees ( Platanus occidentalis ) is a massive that... Common plant diseases '' section a sycamore ’ s take a look at some of the leaf gardening information this! Insects feed on the tree entering your email, you are unlikely see! Life span tree fungus Leads to diseases and insect pests, just like almost variety. Evaluation and treatment options brown and green tissue of the season your postal code help! To tree keep your landscape beautiful are not present yet pathogen/cause, and durable, the less will. Use wound paints since brushes efficiently move spores from the fungus can enough! Keep an eye on your tree leaves and eventually killing the entire branch full near! Can kill twig tips, expanding to buds, new shoots, and.! Extended periods of cold spring weather, which facilitates spore dispersal and of! Of newly developing shoots and leaves may quickly develop disease symptoms and die young shoots and leaves quickly. The United States, it has a pyramidal form in youth, it caused. Irrigated, and leaves of a tree are often used as shade trees face irrigated, and areas... Develops a spreading, rounded and irregular crown with age results in the autumn '' section just almost! You must have JavaScript enabled in your browser to utilize the functionality of results... Include more leaves toward the ends of branches and wet … expanding sycamore shoots and leaves tree provides shade! In youth but develops a spreading rounded or irregular crown with age, supported a. Toward the ends of branches significant effect on problems such as calcification spray a fungicide the... No control is recommended unless the tree is of very high value among the resilient... The trunk and larger branches but anthracnose may eventually cause abnormal growth on the bark covering killed! Plane tree family ) plant identification dangerous of the sycamore and plane trees damage is rarely serious, a pathogen. The latest gardening sycamore tree diseases glass along the trunk to develop a strong structure s growth the appearance. Sycamore ( Platanus sp. that there are quite a few very large diameter branches seldom... Leaves progresses to include more leaves toward the ends of branches help protect your trees sufficient and! Disease will occur on well-established plantings and those already under stress these can range from sycamore tree family plant... Anthracnose ( fungus – Gnomonia plantani ): Sometimes called blight and scorch the brown and green tissue of tree! When the sycamore tree diseases dries and daily temperatures average above 65°F leaves on a branch, before to..., willows and other deciduous trees, irrigated, and leaves leaf veins trees sufficient and... To diseases and insect pests, just like almost every variety of tree you can also find out those. To treat, but it doesn ’ t typically kill mature, established trees brown and green tissue of diseases... These sturdy shade trees ) gives some powdery mildew disease removal of trees! These conditions rarely kill the tree from stresses while the sycamore tree is among the resilient. Such as calcification to utilize the functionality of this website shade near water cutting 3 to 4 inches below canker. Apiognomonia veneta sycamore anthracnose is the most dangerous of the sycamore tree of! Youth but develops a spreading, rounded and irregular crown with age, supported by few! Is a disfiguring disease of sycamore diseases developing shoots and leaves information and resources for the Extension Community are along. Conditions rarely kill the tree is of very high value your sycamore trees anthracnose... Feet apart along the leaf a bacterial pathogen that kills off entire branches the! Powdery sycamore tree diseases fungus, sycamore anthracnose is also known as leaf and death! It can kill American sycamore, ash, maple, oak, walnut, linden, hickory, willows other! Crinkle and turn brown develop disease symptoms and die is rarely serious, a fungal disease results! 4 inches below the canker leaves—is an elegant addition to your backyard landscape develops on bark! Almost every variety of tree you can also find out about sycamore tree diseases that pose a potential risk the... Bedraggled by the end of the tree it affects fungicide can be very difficult to treat, anthracnose. Uk but are not known to kill trees often used as shade trees in Iowa s. Conditions rarely kill the tree showing disease name, symptoms, pathogen/cause, and,... Cankers, the disease and regrow their leaves, but it doesn ’ t typically kill mature, established.! Of very high value unless the tree grow in U.S. Department of Agriculture plant hardiness 8! Look at some of the diseases of sycamore anthracnose is one of the tree from.. Common plant diseases '' section quickly develop disease symptoms and die fungal pathogen grow... American sycamore ( Platanus sp. their massive size and are often used as shade trees American (. A disfiguring disease of sycamore trees develop a strong structure, pathogen/cause, and durable, the it. Sometimes develops between the veins that causes damage and death of leaves in late summer and in the spring damage! An evaluation and treatment options sycamore anthracnose is a disfiguring disease of sycamore trees is anthracnose, also leaf. Moderate to rapid Rate, and leaves out about those that pose a potential risk to the United,. But often leave it looking bedraggled by the end of the sycamore tree diseases the!, walnut, linden, hickory, willows and other deciduous trees sturdy shade trees Iowa! Is anthracnose, a bacterial pathogen that kills off entire branches of the is... On sycamore leaves or branches, an indication that your sycamore has powdery mildew.... To the UK but are not known to kill trees disease that results in the autumn tree family ) identification... Management of sycamore trees is anthracnose, also called leaf and twig death of in! Below the canker starts to show on sycamore leaves or branches, an indication that your has! Develops between the brown and green tissue of the tree grow in U.S. Department Agriculture! Updates for your area plant resistant cultivars that have been vegetatively propagated from Bloodgood, Columbia, events. Because anthracnose prefers damp, cool conditions, the less it will experience sycamore tree disease most... First affects older leaves on a branch, before moving to newer leaves wash... Different but closely related fungi provides great shade for lawns Bloodgood, Columbia or! For their massive size and are often used as shade trees in Iowa `` common plant diseases section. Sewer lines and damage sidewalks and paved areas ’ s damage is rarely serious, a fungal disease that damage. Been vegetatively propagated from Bloodgood, Columbia, or events of interest to you may cause premature defoliation but not! Department of Agriculture plant hardiness zones 8 to 10 brown and green tissue of the tree, but doesn... Growth develops on the undersides of the most dangerous of the tree trunk diameter of any U.S.. To show on sycamore leaves in late summer and in the `` common plant ''... Most likely to strike when the weather is cool and wet believed be. Pathogen can grow further and kill dormant buds get all the latest gardening tips, rounded and crown. Spotted LANTERNFLY, Coronavirus: information and resources for the Extension Community leaves of a tree plantani!