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Sacramento California Dutch Elm Disease in

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Page 1: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Sacramento California

Dutch Elm Disease

in

Page 2: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

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

Page 3: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

DED Symptoms

• Wilting of leaves• Leaf Curl• Dry, brown leaves• Occasional leaf

yellowing• Premature leaf

drop• Discolored wood

Page 4: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Not DED Symptoms

• Squirrel damage• Broken limb• Cambium layer

chewed likely by squirrels

Page 5: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

How the disease spreads!

• European Bark Beetle (Scolytus multistriatus)

• Through root systems grafting to a neighboring tree with DED

Page 6: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Not European Bark Beetle

• Elm Leaf Beetle (Xanthogaleruca luteola)• Defoliates trees but does not carry the

fungus which spreads DED

Depicts medium ELB damage

Page 7: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Elm Leaf Beetle (ELB) Damage

Light: = 0-10%Medium: = 20% - 40%Heavy: 50% - 70%Very heavy: 80% -

100%

Page 8: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Identifying mature elms

Leaf Bark

Page 9: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Annual Inspection

Professionals

Trained volunteers

Page 10: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

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

Page 11: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

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’

Page 12: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus carpinifolia x parvifolia ‘Frontier’

3705 4th Avenue

Page 13: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus glabra x carpinifolia x pumila

‘Homestead’4533 T Street

Page 14: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus americana ‘Princeton’

5412 T Street (tree in forefront)

Page 15: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus americana ‘Valley Forge’

William Land Park (on golf course, by pond off of 14th Avenue)

Page 16: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus carpinifolia x glabra ‘Pioneer’

4648 T Street

Page 17: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus japonica x wilsoniana ‘Accolade’

5417 T Street

Page 18: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Ulmus wilsoniana ‘Prospector’

310 11th Street

Page 19: Sacramento California Dutch Elm Disease in. What is Dutch Elm Disease (DED)? DED is caused by a rapidly spreading fungus Invades water conducting system

Plant for the…

…future!

What can we do?

For further information contact:

Sacramento Tree Foundation

Web: www.sactree.comPhone: 916-924-8733

http://www.sactree.com/

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