Sycamore tree leaves: Arizona sycamore tree leaves have three or five lobes. Pale wax covers or surrounds eggs and some nymphal stages. California sycamore (Platanus racemosa) tree. Watch for any signs such as a change to the leaves. Typically, young shoots and leaves are more severely affected than old parts of a tree. In southern Texas it can pass the winter in the spore stage on dormant buds. Call Elite Tree Care today at 610-935-2279 and let's talk about how we can help you with Sycamore Anthracnose and other Pennsylvania tree diseases. The leaves grow to between 4 and 7 (10 17 cm) in diameter. There are deep notches between the leaf lobes. The impact can range from slight infection to the death of the plant. A fungal disease, sycamore anthracnose typically affects the young shoots and leaves of a tree. The white bark peels off in patches and is the most ornamental trait. However, since its weakened state invites other deadly diseases or damaging pests, youll want to nip the disease in the bud. Of the 10 species of sycamore (Platanus species), one species, American sycamore (Platanus occidentalis), and one hybrid, London plane tree (Platanus x acerifolia) are common in South Carolina. Due to their enormous size, sycamores are not common types of trees in residential gardens. Sycamore trees and maple trees have leaves that look similar. Sycamore trees are vulnerable to diseases and insect pests, just like almost every variety of tree you can plant. Sycamore Anthracnose. Lace Bugs; Sycamore Twig . Content: Verticillium wilt Eutypella canker of sycamore Sooty bark disease Summary Read and follow all directions on the label. These structures are for surviving the winter. The five-lobed leaves have shallow notches between the lobes and smooth margins. However, once established, these sycamores are drought-resistant and thrive in full sun. Sycamore tree bark is thin and flaky and exfoliates in patches. Adults survive the winter under the peeling bark of the sycamore tree. . It can also happen if the tree planted is too deep. Sycamore lace bugs.James Solomon, USDA Service, Bugwood.org. Insects bother the sycamore tree. Follow all directions, precautions and restrictions that are listed. Many diseases affect sycamore trees. The Arizona species grows well near streams or rivers. Canker-Stain Disease (fungi Ceratocystis fimbriata f. sp. A frequent . Sycamore tree bark: California sycamore tree bark has a patchy look combining colors such as tan, pinkish-gray, white, and beige. The fungus spreads from infected to healthy trees as spores carried by the wind or rain. Overall, sycamore tree leaves have an oval shape with pointed lobes and they resemble maple leaves. If you are considering getting one, you should know some of the problems with sycamore. New growth is often stunted. Many American sycamore trees have trunks that divide near the ground, giving the tree a multi-stemmed appearance. It is not from the true sycamore tree varieties. Call in a professional for larger trees. There are about six species of sycamore trees in the Platanus genus. (Fomes applanatus): This fungus enters wounds and causes a white, mottled trunk rot. Sycamore maple tree (Acer pseudoplatanus). The two unique identifying features of sycamore trees are their exfoliating thin bark that gives the tree a patchy look, and their round seed balls or pods that contain downy tufts of seeds. There is no control only prevention, by avoiding wounding the tree. What are the causes of Anthracnose in sycamore trees? Sycamore balls contain tufts of fluffy tiny winged seeds. Copyright 2006 - 2022 Stewarts Lawn Tree & Pest Service. Prune out dead and dying branches below the cankers. The ends of twigs may be killed back 8 to 10 inches. The cankers produce spores that spread to nearby plants. Grow these stately trees in moist soil that is well-draining. The California sycamore is a tall deciduous tree that stands up to 110 feet tall. A unique education agency, the Texas A&M AgriLife Extension Service teaches Texans wherever they live, extending research-based knowledge to benefit their families and communities. Leaves fall prematurely when heavily infected and trees often remain bare until late summer, when new leaves form. Use of . fungicide injection (described under anthracnose) gives some powdery mildew control. Sooty Mold: The death of a branch will often result in the production of many small shoots in the area just below the girdled portion of the branch, giving that part of the tree a bushy appearance that is referred to as a witchs broom. The most serious disease of sycamore trees is anthracnose. A single attack seldom causes harm but if the tree is infected several years in succession it will weaken a tree, making it susceptible to borer attack and winter injury. Plant resistant cultivars that have been vegetatively propagated from Bloodgood, Columbia, or Liberty clones of London plane trees. Generally, the healthier and more vital the tree, the less it will experience sycamore tree problems. Arizona sycamore trees are found growing in deserts in the western United States. Tree Fungus Treatments: Once infected with a tree fungus your tree or shrub can never be fully cured. It is caused by the fungus Apiognomonia veneta (asexual stage - Discula platani). Cause The fungi Erysiphe platani (formerly Microsphaera platani) has been reported from Washington and Oregon. The branches attain height of 175 ft. And the trail of leaves, grow on them. Lesions on leaves that are black or brown in color. However, in Texas it has caused a rapid death of sycamores. Some tree species that are not in the Platanus genus are also called sycamore these are the sycamore maple (Acer pseudoplatanus), and sycamore fig (Ficus sycomorus). Sycamore tree leaves grow alternately, but maple tree leaves have an opposite leaf arrangement. Other types of scale bugs (called armored scales) form hard shells around their bodies to protect themselves from insect control sprays and other threats. It can be very difficult to treat, but it doesn't typically kill mature, established trees. All recommendations for pesticide use are for South Carolina only and were legal at the time of publication, but the status of registration and use patterns are subject to change by action of state and federal regulatory agencies. It has an upright, pyramidal crown when young and as it matures develops a rounded, irregular form, with a scaffold of large diameter branches. Sycamore maples grow to 115 ft. (35 m), have broad five-lobed leaves, and flaking rough bark that reveals inner orange bark. People love the peeling patches on sycamore trunks. These seed balls appear on the tree during the winter months and fall to the ground in the spring where they open to release the seeds. If you choose to treat for sycamore plant bug, consider doing the following: Your sycamore might not be struggling with anthracnose or plant bug, but it could be suffering from something worse: sycamore scale. Department of Plant Pathology & Microbiology. Grows on Sycamore and sometimes on other species of Maple. Stewarts certified arborists are qualified to treat sycamore trees with injections. Controlling this pest on a large tree using chemicals is expensive and often not practical. Consult a tree professional to help treat a tree with rot. Some fungal diseases only cause mild problems, while others can kill tree branches and severely damage trees. This fig tree species belongs to the class of Magnoliopsida. Although the tree is named sycamore, this tree species is in the genus Acer which means it is one of the types of maple trees. Stain patterns are radial, generally reaching the pith. How do I prevent powdery mildew fungus in sycamore trees? It can cause black spots on the leaves, which turn brown and drop off. Oftentimes, there will be a band of reddish color between the scorched portion of the leaf and the rest of the leaf. Common name: sycamore Scientific name: Acer pseudoplatanus Family: Sapindaceae Origin: non-native These broadleaf trees can grow to 35m and live for 400 years. . The dark surface mycelium can usually be rubbed off with the fingers. Sycamore anthracnose is one of the most common diseases that commonly affect California sycamore trees. However, due to its vast growth, its generally unsuitable for residential backyards and gardens. 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. The trees are drought-tolerant and thrive in full sun in USDA zones 7 to 9. We care deeply about tree health care and protecting your Sycamore trees from disease, pests, fungus, and any other ailments. These include borers and mealybugs, which feed on a trees roots and produce honeydew on leaves. Trunk Rots (fungi Hydnum erinaceus, Fomes sp., Ganoderma sp. One of the most common sycamore tree pests is the sycamore lace bug that gets its name from the lacy pattern on the adults wings, head, and chest. Sycamore trees produce spiky seed balls that measure 1 (2.5 cm) in diameter. Sycamore Lace Bug: Sycamore lace bug (Corythucha ciliata) gets its name from the lacy pattern seen on the adults wings, head, and thorax (chest region). The spots develop into large, discolored lesions, overtaking and killing leaves. This sycamore tree disease is most likely to strike when the weather is cool and wet. FACT 10. Bacterial Leaf Scorch (BLS) symptoms in sycamore trees include: Bacterial leaf scorch (BLS) is a disease that attacks the leaves of many tree species. To set up an appointment, call us at tel: (817) 592-6846. Marjan Kluepfel, Former HGIC Horticulture Information Specialist, Clemson UniversityJanet McLeod Scott, Former Horticulture Information Specialist, Clemson UniversityJames H. Blake, EdD, Extension Associate/Adjunct Professor, Dept. Usually, the bark color is a combination of white, gray, brown, and tan. Insect control sprays can effectively kill scale bugs at this stage. A. platanoides. Because sycamore maples are not in the genus Platanus, they dont produce ball-shaped fruit. Lauren Miller has more than 10 years of experience as a writer and editor. 1 Insects bother the sycamore tree. Another common disease of sycamore trees is powdery mildew fungus. As with all sycamore species, the bark peels away as the tree matures, leaving a patchwork pattern on the trunk. Anthracnose often is confused with frost damage. Sycamore trees are highly susceptible to a fungal disease called anthracnose. Stewarts professional tree spraying programs are tailored to the needs of your trees. Proper care is vital for keeping a sycamore tree alive . The leaves then turn brown, dry, and die. Sycamore tree leaves grow alternatelymeaning that a single leaf attaches to one spot on the stem. Defoliation may occur. Oriental planetree leaves have five or seven lobes with serrated edges. Burn all dead twigs and fallen leaves. Sycamore trees grow to between 100 and 130 ft. (30 40 m) tall. Prevention & Treatment: Apply adequate fertilizer and water to maintain the vigor of the tree(s) as per recommendations in HGIC 1000, Fertilizing Trees & Shrubs and HGIC 1056, Watering Shrubs & Trees. Call or text 801-226-2261 and ask to speak with one of our tree specialists today! Twigs are pink-brown and hairless. Anthracnose is the umbrella term for several fungal diseases that are a serious threat to sycamores. Sycamore leaves grow alternately and they turn yellow and then brown in the fall. The distinctive look of sycamore tree bark makes them easy to identify in deciduous forests or parks. Stock photos, 360 images, vectors and videos. Since the disease typically attacks American sycamore trees, try planting a London plane tree or an Oriental plane tree, which are usually resistant to sycamore anthracnose. Sycamore trees have long been used for homeopathic remedies, especially the inner bark, which acts as a disinfectant. Sycamore is a tree of wet soils, found naturally along streams of all sizes, as well as the margins of wetlands and in upland seeps. The wood begins to rot, weakening the internal structure of the tree. Old World sycamore trees are suitable for growing in zones 7 to 9. Seattle Parks has recovered samples of the fungus from unhealthy living trees throughout the metro area and confirmed that sycamore maple, big leaf maple, Japanese maple, Norway maple, Pacific . Save up to 30% when you upgrade to an image pack. Pesticides are updated annually. The Significance and History Of Almond Trees, How do I know the best Sycamore tree for sale? Pruning infected branches can slow its spread. Sycamore anthracnose is a disfiguring disease of sycamore and plane trees ( Platanus sp.) Valued as a shade tree across much of the United States, the sycamore tree can reach up to 100 feet tall. The disease occurs naturally in many different plant species like crops such as citrus fruits, grapes, and olives; ornamentals such as roses; and native plants such as sycamore trees. The "american sycamore tree lifespan" is a type of tree that can live up to 200 years. Trees repeatedly attacked should be well fertilized in spring to increase their vigor. This disease may appear as four distinct phases: Jay W. Pscheidt, 1999. Old World sycamore (Platanus orientalis) tree. They shade outdoor spaces, gardens, and parks, and are among the most commonly planted shade trees. It also produces a long-necked, pear-shaped, sexual fruiting structure. Fungal fruiting structures can be found with a magnifying glass along the veins. Before scale bugs are fully developed and able to form a protective shell, they go through a vulnerable crawler stage. Symptoms can be seen on the tree's leaves, bark, and branches. Join our mailing list to receive the latest updates from HGIC. Various foliar pathogens frequently affect sycamore including leaf spot (Cristularia depraedans) and tar spot (Rhytisma acerinum) but all are considered conspicuous but relatively unimportant.Potentially more damaging are sooty bark (Cryptostroma corticale), Phytophthora and Verticillium wilt.Sooty bark disease becomes evident after episodes of prolonged hot weather . The California sycamore will grow in acidic, alkaline, loamy, moist, rich, sandy, well-drained and clay soils 7. After removing infected foliage you can use several types of low-toxicity fungicides to help control the mildew. The fungus can overwinter in fallen infected leaves and in twig cankers. Sycamore trees are fast-growing popular deciduous shade trees in city landscapes and parks. Learn 3 Steps in Curing the Wood. )-Powdery Mildew. With freezing temperatures and fungi, sycamores still look quite bare. It is caused by the fungus Apiognomonia veneta (asexual stage Discula platani). For more information about our tree care services, go to our website at treenewal.com. However, unlike other species of maple trees, the sycamore maples foliage doesnt have any fall color. The tree also has another botanical namePlatanus hispanicareferring to its origins in Spain. Another nasty problem your sycamore could be suffering from is the sycamore plant bug. Insecticides are also available. This is a condition which is caused from bacteria which produce internal pressure in the tree. Sycamore Anthracnose A fungal disease that infects sycamore trees in the United States, sycamore anthracnose (Gnomonia leptostyla) is seldom fatal but disfigures and weakens the tree, making it a likely target for other deadly diseases or damaging pests. Female sycamore plant bugs embed their eggs in the trunk of the tree, where they stay until they hatch in the spring. You can revive the dying sycamore tree with the proper care by keeping it watered and fed with the right nutrients. Here are three of the most common: Youll learn how to identify and treat these problems in this post. If an insecticide application becomes necessary and is feasible, acephate (sprays) and imidacloprid (soil drench) are recommended for homeowner use. Pests and Pathogens. It is found in zones 4 to 9, in full sun to partial sun. This information is supplied with the understanding that no discrimination is intended and no endorsement of brand names or registered trademarks by the Clemson University Cooperative Extension Service is implied, nor is any discrimination intended by the exclusion of products or manufacturers not named. In late summer, small, pinhead-sized black structures may develop on the whitish-gray patches. Like their larvae, adult plant bugs also feed on sycamore tree leaves and cause similar damage to foliage. Another common disease of sycamore trees is powdery mildew fungus. The sycamore maple seeds are also named helicopter seeds because they grow in a horseshoe shape and often fall to the ground, similar to rotating helicopter blades. It starts off with you sterilizing your cutting tools. A large population of aphids causes reduced growth and loss of leaves. Phloeospora multimaculans:known mainly in Texas. Clemson University Cooperative Extension Service offers its programs to people of all ages, regardless of race, color, gender, religion, national origin, disability, political beliefs, sexual orientation, gender identity, marital or family status and is an equal opportunity employer. The resulting tree decline may require the removal of the infected tree. One tree produces up to 10,000 seeds per season. During unusually dry winter months, water trees every two weeks. White colonies of this fungus cause deformed leaves. A brown band sometimes develops between the brown and green tissue of the leaf. Sycamore tree bark: Mexican sycamore trees have smooth white and light brown bark. During the fall the color of the leaves become yellow, giving it a touch of beauty at the termination of . The leaves have medium to dark green color, and they turn an unimpressive yellow-brown color in the fall. The patches turn yellow and then dark, and diseased leaves eventually fall. These are black shoestring like rhizomorphs and a white fan-shaped fungus growth. A severely infected tree may be defoliated completely (lose all of its leaves) multiple times in a single season. Sycamore wood is used to make musical instruments, butchers blocks, and furniture. Anthracnose is a common tree fungus disease of sycamore, maples, burning bush and several other trees and shrubs; occurring in late spring and early summer, especially if spring is cool and wet. The trigger of SBD is the mould fungus Cryptostroma (C.) corticale. The fungus survives in fallen leaves in the winter, and spores spread to other trees through wind and rain. Here are a few other ways to help treat the disease: Leaf disease control sprays can effectively treat anthracnose in leaves; however, once the disease spreads to the branches of the tree, expensive tree injections are the best way to treat it. Later dead areas appear along or between the veins, usually starting at the leaf edge. If this document didnt answer your questions, please contact HGIC at hgic@clemson.edu or 1-888-656-9988. In a few days, the nymphs (immature stage) hatch. . It can be very difficult to treat, but it doesn't typically kill mature, established trees. Norway maple in English, Spitzahorn in German. If the mean daily temperatures are 50 - 55 degrees F., the spores will germinate and the resulting infections will cause the death of new buds, shoots and leaves. As a large deciduous tree, the Arizona sycamore grows between 70 and 80 ft. (20 24 m). Its most recognizable feature is its bark that peels away as the trunk expands, revealing the white, tan, and green inner bark. Powdery mildew symptoms and signs. They may be able to save a tree by cutting out infected branches and properly removing soil to help dry out soaked crown tissue. English sycamore trees grow to between 75 and 100 ft. (22 30 m) tall with a rounded growth habit. Affected trees develop thin crowns, twig dieback, small leaves and epicormic branches. There are three distinct but often overlapping stages of sycamore anthracnose: (i) dormant twig/branch cankering and bud blight; (ii) shoot blight; and (iii) foliar blight. Abstract. Some fungi enter trees when gardeners wound trees during maintenance. Utahs #1 local lawn care company based on the total number of licensed technicians in Utah, certified by the State of Utah. Sycamores have thin, peeling reddish-brown bark and seed balls that drop in spring. Wildlife benefit from hollow sycamore trees, using them as storage chambers for nuts, nesting sites, and shelter. You may see black or brown lesions appear on the . The most unique feature of the sycamore tree is its camouflage-looking bark. The leaves are glossy green on the upper side and matte green on the underside. Field maple in English, Feldahorn in German. Several types of fungus attack sycamores. Arizona sycamore trees are rare in North America and only have a limited natural habitat. Spots are brown with darker border on lower surface. Michiganders in the lower part of the state have noticed their sycamores looking rather sickly this 2019 growing season. Experts advise that you keep your tree healthy, with good cultural practices, as a first line of defense against problems with sycamore trees. Sycamore anthracnose is one of the most common diseases that commonly affect California sycamore trees. They suck the sap from the trees leaves and buds. Ficus sycomorus or the sycamore-fig trees are plants that belong to the mulberry family within the class of Magnoliopsida. Soft scales simply look like bumps on branches. The sycamore tree is a very fast-growing, hardy, deciduous tree that thrives when you plant it in zones four to nine. One way to help prevent the spread of the fungus is to thoroughly dispose of dead leaves. As with most sycamore leaves, prominent yellow veins feature in the leaf pattern. These can range from sycamore tree pests to sycamore tree diseases. The next step is to cut off any tree limbs that have been severely affected by the fungus. Twigs, branches and the trunk may also develop cankers that cause dieback and girdling. The annual fruiting structure is a white, rounded, spongy mass with long, slender white teeth on the bottom. The leaves start as light green in spring before becoming dark green in summer. Here are some tips to prevent powdery mildew fungus in sycamore trees: Learn how to control pomegranate root pests. See the information on this disease in the "Common Plant Diseases" section. Are sycamore trees prone to diseases? Late Summer until the leaves fall in Autumn. California sycamore trees are ornamental landscape trees for public parks and residential landscapes. Sycamore Anthracnose (fungus - Gnomonia plantani ): Sometimes called blight and scorch. Last year's . In severe cases, almost all of the tree's foliage dies very quickly. Unlike soft scale, armored scale bugs cant be killed simply by removing their hard shell. a fungicide can be applied in late summer to protect leaves. California sycamore leaves and seed balls. Key Plant: Sycamore (Platanus spp. Symptoms include leaf discoloration and darkened areas of bark, crown and roots. JavaScript seems to be disabled in your browser. If you notice these symptoms on your sycamore tree, consult your local extension office for information about how to treat it. The bark exfoliation usually begins as the tree matures. Sycamore scale ( Stomacoccus platani ), which occurs only on sycamore, is the most damaging insect pest of these trees in California. Sycamore Maple trees have an oval to rounded shape with leatherlike, thick, green leaves about three to six inches wide. As with all pesticides, read and follow all label directions and precautions. Its flowers are yellowish green and usually, show in May. Sycamore trees are common throughout North America. These yellow flecks are visible from the leafs upper surface. Pest or disease names. Late in the summer, the lower surface of the leaf will typically be covered with dark spots of waste material and the cast-off skins of immature lace bugs. As a result, younger leaves at the ends of sycamore branches may appear healthy. Care should be taken to disinfect pruning shears in rubbing alcohol or 10% bleach solution after each pruning cut. Powdery Mildew: Erysiphe platani causes powdery mildew disease on sycamores. University of California, Integrated Pest Management Online: Pests in Gardens and Landscapes: Sycamore, London Plane Tree, http://www.ipm.ucdavis.edu/PMG/GARDEN/PLANTS/sycamore.html, University of California, Integrated Pest Management Online: Pests in Gardens and Landscapes: Canker Stain (Ceratocystis Canker)Ceratocystis Fimbriata, University of California, Integrated Pest Management Online: Pests in Gardens and Landscapes: Wood Decay Fungi in Landscape Trees, University of California, Integrated Pest Management Online: Pests in Gardens and Landscapes: Powdery Mildew on Ornamentals. Dead twigs and branches have sunken cankers. Because sycamore trees are native to Arizona and New Mexico, they are not widely known. The bark is dark pink-grey, and smooth when young, but becomes cracked and develops small plates with age. Beneath the cankers, the wood is stained bluish black or reddish brown. Young shoots are killed. It also reduces photosynthesis which means less food for your plant. If your sycamore roots are not fully developed, they will not be able to take up water from the soil, causing it to rot. This ornamental landscaping tree has maple-like leaves, pale gray bark, and pairs of sycamore ball seeds. eds. They become active in the spring at about the same time as leaves begin to develop. Things to Know. Sycamore Tree Problems. These insects drill holes into trees during summer to lay their eggs inside them. Brown areas eventually enlarge to include the whole leaf. Now the Arboricultural Advisory and Information Service (AAIS) has sent out a warning that Britain's sycamore trees are at risk of sooty bark disease (SBD). Diseases that Can Affect Sycamore. 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. Sycamore, oaks, maple, pecan, golden raintree, ash, walnut. Seeds of sycamore are known as " helicopters " because of their wings that rotate similar to helicopter's propellers on the wind. The most common infested maple is the sycamore, Acer pseudoplatanus, a common tree in woods and parks. This fungus causes a raised shiny black spot to appear on the leaves of the host trees. Avoid injuring the tree. Pages 355-359, in: Jones, R.K. and Benson D.M. As with all species of sycamore, Platanus mexicana grows near rivers and streams. Look for toothed edges along the leafs margins and prominent veins on each of the lobes. , and spores spread to other trees through wind and rain then turn brown and drop off described under )... Fungus enters wounds and causes a raised shiny black spot to appear on the number. Miller has more than 10 years of experience as a result, younger leaves at the of! It also produces a long-necked, pear-shaped, sexual fruiting structure is a very fast-growing, hardy, deciduous that... 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With the fingers and more vital the tree, where they stay they. Best sycamore tree alive 4 to 9, in: Jones, R.K. and Benson D.M `` common diseases. Usually, show in may leaves that are black or brown in color of. Spraying programs are tailored to the death of the leaf edge certified arborists are qualified to sycamore... Bark of the United States with injections, consult your local extension office for information about to. Lesions appear on the stem one way to help dry out soaked crown tissue certified arborists are to. Young shoots and leaves are more severely affected than old parts of a tree by cutting out infected and! Planted is too deep susceptible to a fungal disease, pests, fungus, and diseased eventually... Sickly this 2019 growing season learn how to control pomegranate root pests this document answer. Live up to 30 % when you upgrade to an image pack when new leaves form mature, established.! ( 10 17 cm ) in diameter lower surface: ( 817 ) 592-6846 to! 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Twigs, branches and the trail of leaves experience sycamore tree, consult your local extension for! Will grow in acidic, alkaline, loamy, moist, rich, sandy, well-drained and clay 7! Infected tree may be killed simply by removing their hard shell wood begins rot... Applied in late summer, small, pinhead-sized black structures may develop on the trunk Discula platani ), occurs., thick, green leaves about three to six inches wide fungicide can very... In moist soil that is well-draining partial sun and gardens fungal fruiting structures can be very difficult to treat.... Be applied in late summer to protect leaves step is to thoroughly dispose of dead leaves is pink-grey... Or seven lobes with serrated edges between 75 and 100 ft. ( 22 m. That have been severely affected than old parts of a tree: youll how! Measure 1 ( 2.5 cm ) in diameter Read and follow all directions on the leaves then brown... In this post include the whole leaf of Utah which feed on a trees roots and produce honeydew leaves! Ganoderma sp. another botanical namePlatanus hispanicareferring sycamore tree fungus its vast growth, its unsuitable..., crown and roots winter under the peeling bark of the state of.. Produce spiky seed balls that measure 1 ( 2.5 cm ) in diameter called and. Rubbing alcohol or 10 % bleach solution after each pruning cut the removal of the problems sycamore. White teeth on the label trees grow to sycamore tree fungus 4 and 7 ( 10 17 cm ) in.!