![]() ![]() You can find a certified arborist in your area through Landscape Ontario. I agree with the initial response that an arborist should be consulted in order to determine what’s affecting your lovely tree. You mentioned the tree has been sick/stressed for 5 years and seems to be getting worse.īased on your photo, it seems that Cypress Canker may be the culprit. I believe your tree is a weeping Nootka cypress ( Chamaecyparis nootkatensis ‘Pendula’). Thanks for forwarding a photo of the tree. As this is a large tree, I would also recommend you seek the advice of a certified arborist for a definitive diagnosis as well as removal, should that be necessary. Hope this information helps with your on-site diagnosis and gives you guidance on how to proceed. Needle damage is also caused by winter burn and desiccation as per the West Virginia University Website Winter Burn and Dessication ![]() I do not believe it is needle blight as you mention that it affects the bark of the weeping cypress, needle blight affects the trees needles. Phytophthora root and crown rot management The symptoms you described may also be attributed to Phytophthora root and crown rot, the University of West Virginia newsletter article describes Phytophthora root and crown rot in detail. It also provides details of the disease and how to manage the canker. The West Virginia University Website has photos of the damage that you may compare with you weeping cypress. This disease is dangerous and can spread to other nearby trees. Unless this Canker has already attacked most of your tree or the whole tree, then you will have to remove it and dispose of it appropriately. To revive your tree from Seiridium canker, get rid of infected branches by cutting them out. You can easily detect this fungus by checking cracks in the bark where the fungus attacked it. This is a fungus that attacks the bark of the tree, leaving its leaves yellow and killing the plant slowly. I am attaching several links within this answer that should help you out by comparing the pictures to the exact situation in your garden.Ĭypress Canker – also referred to as a Seiridium canker. ![]() It has graceful pendulous branches that upsweep at the ends and flattened sprays of gray-green or blue. In its native habitat, it is commonly found growing along streams and ravines and other areas with moist soils. That being said, from your description, it may be Cypress Canker (Seiridium), Phytophthora root, Crown disease, and/or needle blight. Nootka Cypress is a needled evergreen tree in the cypress family native to the Pacific coast from Alaska to northern California. The photos did not attach to your email so I cannot verify the tree damage or make a diagnosis. Thank you for contacting Toronto Master Gardeners, ![]()
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