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Sacramento California

Dutch Elm Disease. Sacramento California. 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.

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Sacramento California

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  1. Dutch Elm Disease SacramentoCalifornia 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 (= Pyrrhalta) • Elm Leaf Beetle (Xanthogaleruca luteola) • Defoliates trees but does not carry the fungus which spreads DED 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 Leaf Bark

  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’ 3705 4th 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 14th Avenue)

  16. Ulmus carpinifolia x glabra ‘Pioneer’ 4648 T Street

  17. Ulmus japonica x wilsoniana ‘Accolade’ 5417 T Street

  18. Ulmus wilsoniana ‘Prospector’ 310 11th Street

  19. What can we do? For further information contact: Sacramento Tree Foundation Web: www.sactree.com Phone: 916-924-8733 Plant for the… …future!

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