[CANUFNET] white blotches on Norway maples
Shields, Peter
Peter.Shields at davey.com
Wed Nov 21 12:25:18 EST 2012
Has anyone seen this? I was sent a picture from multiple trees in Ottawa asking to try and ID this. Apparently throughout the crowns randomly and spongy underneath. Does not look like a lichen but could be wrong. Trees are stressed too. It's kind of fun trying to diagnose from such a small caption!
Peter Shields
Board Certified Master Arborist, ISA BCMA ON 0570B
Certified Tree Risk Assessor, ISA PNW CTRA #1590
Forest Technician
ASCA Member
Butternut Health Assessor, OMNR BHA #252
Davey Resource Group, A Division of Davey Tree Expert Company
Cell (647) 465-4901
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