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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.

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Presentation on theme: "Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system."— Presentation transcript:

1 Sacramento California Dutch Elm Disease in

2 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

3 DED Symptoms Wilting of leaves Leaf Curl Dry, brown leaves Occasional leaf yellowing Premature leaf drop Discolored wood

4 Not DED Symptoms Squirrel damage Broken limb Cambium layer chewed likely by squirrels

5 How the disease spreads! European Bark Beetle (Scolytus multistriatus) Through root systems grafting to a neighboring tree with DED

6 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

7 Elm Leaf Beetle (ELB) Damage Light: = 0-10% Medium: = 20% - 40% Heavy: 50% - 70% Very heavy: 80% -100%

8 Identifying mature elms LeafBark

9 Annual Inspection Professionals Trained volunteers

10 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

11 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’

12 Ulmus carpinifolia x parvifolia ‘Frontier’ th Avenue

13 Ulmus glabra x carpinifolia x pumila ‘Homestead’ 4533 T Street

14 Ulmus americana ‘Princeton’ 5412 T Street (tree in forefront)

15 Ulmus americana ‘Valley Forge’ William Land Park (on golf course, by pond off of 14 th Avenue)

16 Ulmus carpinifolia x glabra ‘Pioneer’ 4648 T Street

17 Ulmus japonica x wilsoniana ‘Accolade’ 5417 T Street

18 Ulmus wilsoniana ‘Prospector’ th Street

19 Plant for the… …future! What can we do? For further information contact: Sacramento Tree Foundation Web: Phone:


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