Sycamore Lace Bug: Sycamore lace bug (Corythucha ciliata) gets its name from the lacy pattern seen on the adult’s wings, head, and thorax (chest region).The adult is small, 1 /8 inch in length and brown to black in color. This disease cannot be prevented, but removal of infected limbs will extend the life of the tree. Apply a fungal spray as a preventative measure or as a cure when you first notice the fungus. Sycamore leaf spot, caused by the fungus Cristulariella depraedans, results in pale blotches on leaves which later dry up and fall. Ceratocystis fimbriata f. sp. If you give your trees sufficient water and fertilizer, you are unlikely to see this sycamore tree disease. Anonymous. Over time the spots may combine to enlarge and form blotches. In more severe cases, like Linda's, trees may drop leaves prematurely. The lesions continue to grow, and by the end of summer form leaf spots that look like tar. I forget the name of the disease but what I want to know is will using them as a mulch transfer disease to my vegetables and flowers? A maple belonging to my neighbors across the street has the same issue. 22 Friday Sep 2017. Beneath the cankers, the wood is stained bluish black or reddish brown. Spores from the fungus can be spread by rain and wind. The first symptom on the yellow or green bark is a brown to black lens-shaped discoloration. black spots on sycamore leaves, Blue tit, grey-green lichen hanging from tree, hart's tongue fern, male fern, Nuthatch. The black spots on the leaves contain fungal spores that can survive the winter. Viewed in cross section, the discolored wood is wedge shaped with the point of the wedge extending toward the center of the trunk or branch. To prevent bacterial leaf spot, keep the plant in a well-ventilated area exposed to the amount of sunlight it needs. It also kills twigs and, if severe, entire branches. use sycamore leaves for leaf mould because it is our main tree which sheds leaves, have had no problem at all with any leafmould this has made but would be interested to know what anyone finds out, the leaves on most sycamores seem to have blackspots on them I seem to remember – can make leaf mould in 12 months both in the leaf bin and also in black bags – does need a bit of moisture … Adults survive the winter under peeling bark of the sycamore tree. Is it safe to bag them up to make leaf mould or is it safer to put them in my council compost bin? Thanks for any advice. These spots appear on the leaves and appear to be spreading to other varieties, such as beech. The trees otherwise seem to be doing fine. Sycamore; As with most tree fungi, maple tar is more likely to happen if your area has been getting lots of rain! Sycamore. It impacts many trees, but doesn’t usually present any critical danger to them.. Black spot disease is a fungus that mostly attacks fruit trees like the cherry tree, walnut, grapevine, raspberry, blackcurrant, oak or red currant, certain shrubs like hydrangea and also vegetables such as cucumber, bean, pea, or tomato. These develop into brown-black lesions, retaining the yellow border. its called TAR SPOT,CAUSED BY POLLUTION IN THE AIR. Tree removal, trimming and pruning service located in Loganville, Ga. serving Atlanta, Snellville, Lawrenceville, Duluth, Decatur, Monroe, Norcross. Hawthorn leaf blight is a major cause of severe fungal infections that can cause hawthorn trees to wilt and die. This sycamore tree disease is most likely to strike when the weather is cool and wet. Answer Save. Favourite answer. Sycamore Tree Leaf. I am (unfortunately) surrounded by sycamore trees, their leaves are covered with large black spots. Management. 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