Leaf spot diseases of linden trees can be caused by many different fungi. They grow larger and merge over time. This fungus … This large deciduous tree can grow to more than 20m high. Other names include linden for the European species, and basswood for North American species. These dead spots are caused by fungi or other factors. Family: Malvaceae. The Basswood variety of the linden tree offers a great yard addition for those looking to … Severe infections defoliate the tree. Small-leaved lime may produce suckers from the base of the tree. Under the Cronquist classification system, t… She holds a Bachelor of Arts in urban and regional studies. var. Multiple fungi can cause leaf spots or leaf blotches on the large leaves of the American linden, including an anthracnose fungus and the leaf spot fungus Cercospora microsera. Several diseases are common in linden trees, such as powdery mildew, sooty. Major Diseases of the Lime Tree Scab Disease. 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). 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. Verticillium Wilt. Powdery mildew is another common issue with lindens, and easily recognizable by the white powdery substance that covers leaves and even shoots. These pathogens generally affect the linden through wounds; old or declining trees are most likely to develop wood decay. Large-leaved lime (Tilia platyphyllos) has hairs all over the underside. 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. 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. Middle-aged ‘Greenspire’ Littleleaf Linden. If you have a sick linden tree, your tree might have verticillium wilt, which is one of the most common linden tree diseases. Origin: native. Angela Ryczkowski is a professional writer who has served as a greenhouse manager and certified wildland firefighter. In case of severe infestations, falling of leaves might occur. A deciduous tree, it thrives in U.S. Department of Agriculture plant hardiness zones 3 through 8. Keep trees healthy to prevent the disease. It is one of the most common diseases that linden trees fall prey to. Tilia americana. What Can I Do if I Have a Fungus on My Linden Tree? American lindens are potentially affected by multiple different fungi responsible for wood decay. Back to search results. It is easy to transplant is tolerant of clay soil and some drought once established. The tree likes Sun to half-shade at the location and the soil should be sandy - loamy to loamy. American linden is a useful shade tree and a good honey plant in the Malvaceae family. Once cankers appear on a tree's trunk, there is no way to address the canker, but providing the tree with excellent cultural care will prolong its attractive life. If cankers appear on a tree’s trunk, it is not possible to eliminate the canker. Anthracnose caused by Gnomonia tiliae causes elongated light brown areas next to the veins. The Tree is a deciduous tree, it will be up to 40 m (131 ft) high. Common Name(s): American Basswood; American Linden; Basswood; Linden; Phonetic Spelling TIL-ee-uh a-mer-ih-KAY-nah Description. The disease does not require chemical controls every year but repeated severe infections may justify spraying. Sold by 42 nurseries. Basswood. If your sick linden tree has cankers, prune off the affected branches as soon as you notice the damage. Verticillium wilt causes dieback and death of individual branches or the entire tree. 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. If control is needed, use benomyl. The fungus enters the tree’s xylem, infects the branches, and spreads to the leaves. Affected leaves often drop prematurely. This deciduous tree species is susceptible to multiple diseases that can impact a tree's appearance or even its vigor and structural strength. The spots are bordered by a distinct black band. Scientific name: Tilia cordata. Sign up for our newsletter. Try an advanced search. Consider removing declining specimens that could pose a threat to property or life if they are structurally compromised enough to fall. Wood decay fungi are most easily identified and differentiated by their fruiting bodies, mushrooms or conks, that emerge from near the base of the plant or wounds. Leaf spots are common diseases of linden trees. Unfortunately, treatment of this disease is nearly impossible. In case of fruits, the affected areas become light-colored and raised. The best thing to do is to plant the tree where it gets lots of sunlight and the air can circulate. This fungus is dispersed by wind and develops most rapidly in shade and when temperatures are 60 to 80 degrees Fahrenheit. Tilia explores a field of tall grass during a demonstration Wednesday, Oct. 28, 2020, at the Mequon Nature Preserve. The genus occurs in Europe and eastern North America, but the greatest species diversity is found in Asia. Reasonably resistant to pests & diseases; Need more criteria? New growth can be distorted. To address cankers on branches, prune off the problematic branches as soon as you notice the damage, making any cuts well below the bottom of each canker into healthy tissue and positioning cuts just above stem junctions or next to a branch collar, the area of raised tissue where a branch meets the trunk or a larger branch. In order to deal with leaf spot, prune out infected twigs when the trees are dormant. American linden trees (Tilia americana) are loved by homeowners for their lovely shape, deep foliage, and beautiful fragrance. https://homeguides.sfgate.com/diseases-american-linden-tree-77206.html It enters the tree through root wounds. Fertilizing infected trees with high nitrogen fertilizers helps.