You can recognize these linden tree diseases by circular or splotchy spots on the leaves. Positioning the American linden where it will receive full sunlight, pruning out areas of dense growth to encourage good air circulation, and avoiding excessive nitrogen fertilizer applications will minimize problems with this disease. Sign up to get all the latest gardening tips! Join the RHS today and get 12 months for the price of 9. Common Name(s): American Basswood; American Linden; Basswood; Linden; Phonetic Spelling TIL-ee-uh a-mer-ih-KAY-nah Description. New growth can be distorted. University of Florida IFAS Extension: American Linden, University of California Statewide Integrated Pest Management Program: Powdery Mildew on Ornamentals, University of California Statewide Integrated Pest Management Program: Wood Decay Fungi in Landscape Trees, University of California Statewide Integrated Pest Management Program: Canker Diseases, Lady Bird Johnson Wildflower Center: Tilia Americana (American Basswood), West Virginia University Extension Service: Diseases of Forest Trees, University of Illinois Extension: Anthracnose Diseases of Shade Trees. The best thing to do is to plant the tree where it gets lots of sunlight and the air can circulate. Small-leaved lime may produce suckers from the base of the tree. Keep trees healthy to prevent the disease. The leaf areas are discolored, and raised from the surrounding surfaces. Powdery mildew is another common issue with lindens, and easily recognizable by the white powdery substance that covers leaves and even shoots. Powdery mildew forms a white coating on the leaves but is usually not serious. American linden is a useful shade tree and a good honey plant in the Malvaceae family. These dead spots are caused by fungi or other factors. If cankers appear on a tree’s trunk, it is not possible to eliminate the canker. What Can I Do if I Have a Fungus on My Linden Tree? If control is needed, use benomyl. Severe infections defoliate the tree. These pathogens generally affect the linden through wounds; old or declining trees are most likely to develop wood decay. Give the tree top care in order to prolong its life. You can recognize these linden tree diseases by circular or splotchy spots on the leaves. The twigs are brown-red in the shade, but become shiny in sunlight. Sold by 42 nurseries. Cankers are sunken areas of dead tissue that may appear on an American linden's trunk or branches; they are sometimes very noticeable and other times hardly visible. To treat your linden tree for diseases, you must first make an accurate diagnosis of what disease is affecting your tree. Powdery mildew is a fungal disease that appears on American lindens and a host of other landscape plants as powdery white growth on leaves and shoots. Tilia americana. The spots may be anywhere on the leaf but are most often near the tip. Tilia is a genus of about 30 species of trees or bushes, native throughout most of the temperate Northern Hemisphere. Its bark is grey-brown and smooth and develops flaky plates with age. Prune well below the bottom of each canker into healthy tissue. These diseases appear as circular or irregular leaf spots that may enlarge, grow together and develop a dark margin as the disease progresses. It is pale yellow-green in the fall. The spots are bordered by a distinct black band. Anthracnose caused by Gnomonia tiliae causes elongated light brown areas next to the veins. The genus occurs in Europe and eastern North America, but the greatest species diversity is found in Asia. Large-leaved lime (Tilia platyphyllos) has hairs all over the underside. Sick linden trees weaken because photosynthesis is interrupted. Origin: native. Where possible, prune out infected twigs when the American linden is dormant and destroy these diseased plant parts. Middle-aged ‘Greenspire’ Littleleaf Linden. TILIA DISEASES . This large deciduous tree can grow to more than 20m high. Also, rake up fallen leaves and destroy them. For a rundown of the diseases of linden trees and other linden tree problems, read on. U.S. Department of Agriculture plant hardiness zones, Linden Tree Info: How To Care For Linden Trees, Linden Borer Control – Linden Borer Information And Management, Maple Tree Bark Disease - Diseases On Maple Trunk And Bark, Prickly Kale Leaves – Does Kale Have Thorns, Corn Husk Wreath Ideas: How To Make A Corn Husk Wreath, DIY Air Plant Wreaths: Wreath Making With Air Plants, Pepper Black Spot – Why Are There Spots On My Peppers, Ringspot Virus Of Spinach Plants : What Is Spinach Tobacco Ringspot Virus, What Is Potato Late Blight – How To Manage Potatoes With Late Blight, Avocado Texas Root Rot – Controlling Cotton Root Rot Of Avocado Tree, Thanksgiving Tradition: Turning Homegrown Pumpkins Into Pie, Growing Thanksgiving Dinner – Must Have Turkey Side Dishes, Interesting Uses For Pecans: What To Do With Pecans, The Bountiful Garden: Bringing The Garden To Thanksgiving. https://homeguides.sfgate.com/diseases-american-linden-tree-77206.html American lindens are potentially affected by multiple different fungi responsible for wood decay. Common lime (Tilia x europaea) has tufts of white hairs at the end of twigs, whereas in small-leaved lime (Tilia cordata) these are rusty red. Back to search results. Promptly rake up and remove or destroy fallen leaves and other debris. Several diseases are common in linden trees, such as powdery mildew, sooty. She holds a Bachelor of Arts in urban and regional studies. Other names include linden for the European species, and basswood for North American species. Major Diseases of the Lime Tree Scab Disease. The symptoms of a sick linden tree with this disease include leaves dropping prematurely. The Basswood variety of the linden tree offers a great yard addition for those looking to … It is one of the most common diseases that linden trees fall prey to. var. Angela Ryczkowski is a professional writer who has served as a greenhouse manager and certified wildland firefighter. In case of fruits, the affected areas become light-colored and raised. Tilia cordata small-leaved lime . The Tree is a deciduous tree, it will be up to 40 m (131 ft) high. This deciduous tree species is susceptible to multiple diseases that can impact a tree's appearance or even its vigor and structural strength. Consider removing declining specimens that could pose a threat to property or life if they are structurally compromised enough to fall. This is also a fungal disease that starts in the soil. It is caused by the fungus Elsinoë fawcettii, and it usually affects leaves and fruits. Leaf spots are common diseases of linden trees. Affected leaves often drop prematurely. Fertilizing infected trees may help. Unfortunately, this attractive tree is susceptible to multiple diseases. Properly prune trees and avoid wounding the American lindens to avoid problems with wood decay fungi. Fertilizing infected trees with high nitrogen fertilizers helps. 1). The leaves are cordate and the flowers are yellow. American linden (Tilia americana), also commonly called American basswood, basswood or bee tree, grows in U.S. Department of Agriculture plant hardiness zones 3 through 8, where it is prized for an attractive form, dense foliage and fragrant but inconspicuous flowers. Verticillium Wilt. They grow larger and merge over time. This fungus is dispersed by wind and develops most rapidly in shade and when temperatures are 60 to 80 degrees Fahrenheit. The disease does not require chemical controls every year but repeated severe infections may justify spraying. Family: Malvaceae. Leaf spot diseases of linden trees can be caused by many different fungi. Linden trees fall within the Tilia genus and are part of the Tilioideae (or Tiliaceae) subfamily.This same family also includes trees and shrubs like the Rose of Sharon (Hibiscus syriacus), phalsa (Grewia subinaequalis), durian (Durio zibethinus), and the Illawarra flame tree (Brachychiton acerifolius). If you see sunken areas of dead tissue on your linden tree trunk or branches, it may have another of the most common linden tree problems – canker. Leaf spots are common diseases of linden trees. These leaves fall prematurely. It is easy to transplant is tolerant of clay soil and some drought once established. Unfortunately, treatment of this disease is nearly impossible. Some of the linden tree diseases can impact a tree’s appearance or vigor.