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Published byJordyn Weller Modified over 10 years ago
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Sacramento California Dutch Elm Disease in
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What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system Restricts water movement Causing progressive wilt, die back and eventual death
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DED Symptoms Wilting of leaves Leaf Curl Dry, brown leaves Occasional leaf yellowing Premature leaf drop Discolored wood
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Not DED Symptoms Squirrel damage Broken limb Cambium layer chewed likely by squirrels
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How the disease spreads! European Bark Beetle (Scolytus multistriatus) Through root systems grafting to a neighboring tree with DED
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Not European Bark Beetle Elm Leaf Beetle (Xanthogaleruca luteola) Defoliates trees but does not carry the fungus which spreads DED (= Py rr hal ta) Depicts medium ELB damage
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Elm Leaf Beetle (ELB) Damage Light: = 0-10% Medium: = 20% - 40% Heavy: 50% - 70% Very heavy: 80% -100%
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Identifying mature elms LeafBark
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Annual Inspection Professionals Trained volunteers
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What are we doing? Monitoring all elms for DED Removing hazardous and infected elms Planting DED resistant elms Monitoring DED resistant elms progress Educating and reaching out to the community
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DED Resistant Elms Ulmus carpinifolia x parvifolia ‘Frontier’ Ulmus glabra x carpinifolia x pumila ‘Homestead’ Ulmus americana ‘Princeton’ Ulmus americana ‘Valley Forge’ Ulmus carpinifolia x glabra ‘Pioneer’ Ulmus japonica x wilsoniana ‘Accolade’ Ulmus wilsoniana ‘Prospector’
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Ulmus carpinifolia x parvifolia ‘Frontier’ 3705 4 th Avenue
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Ulmus glabra x carpinifolia x pumila ‘Homestead’ 4533 T Street
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Ulmus americana ‘Princeton’ 5412 T Street (tree in forefront)
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Ulmus americana ‘Valley Forge’ William Land Park (on golf course, by pond off of 14 th Avenue)
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Ulmus carpinifolia x glabra ‘Pioneer’ 4648 T Street
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Ulmus japonica x wilsoniana ‘Accolade’ 5417 T Street
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Ulmus wilsoniana ‘Prospector’ 310 11 th Street
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Plant for the… …future! What can we do? For further information contact: Sacramento Tree Foundation Web: www.sactree.comwww.sactree.com Phone: 916-924-8733
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