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Sacramento California Dutch Elm Disease in
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
DED Symptoms Wilting of leaves Leaf Curl Dry, brown leaves Occasional leaf yellowing Premature leaf drop Discolored wood
Not DED Symptoms Squirrel damage Broken limb Cambium layer chewed likely by squirrels
How the disease spreads! European Bark Beetle (Scolytus multistriatus) Through root systems grafting to a neighboring tree with DED
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
Elm Leaf Beetle (ELB) Damage Light: = 0-10% Medium: = 20% - 40% Heavy: 50% - 70% Very heavy: 80% -100%
Identifying mature elms LeafBark
Annual Inspection Professionals Trained volunteers
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
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’
Ulmus carpinifolia x parvifolia ‘Frontier’ 3705 4 th Avenue
Ulmus glabra x carpinifolia x pumila ‘Homestead’ 4533 T Street
Ulmus americana ‘Princeton’ 5412 T Street (tree in forefront)
Ulmus americana ‘Valley Forge’ William Land Park (on golf course, by pond off of 14 th Avenue)
Ulmus carpinifolia x glabra ‘Pioneer’ 4648 T Street
Ulmus japonica x wilsoniana ‘Accolade’ 5417 T Street
Ulmus wilsoniana ‘Prospector’ 310 11 th Street
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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