Ash tree issue - Ask Extension
We have a 20-25 foot tall ash tree, which this year has some leafless branches, etc. It is not leafing out nearly as well as normal. I just so happen ...
Knowledgebase
Ash tree issue #405664
Asked June 08, 2017, 4:28 PM EDT
We have a 20-25 foot tall ash tree, which this year has some leafless branches, etc. It is not leafing out nearly as well as normal. I just so happen to put together a daily compilation of May days for this same tree last year (just for fun, so crazy I have this) ...it is on you tube here https://www.youtube.com/watch?v=cNs5es9uR1E
This year, many branches are not having leaves, particularly on one side, but not all branches. When I break some of the tips of the branches without leaves, it is not green/some seem 'dead'. I fertizlize in addition to the imdacloprid / fertilizer (Bayer).
I see no sign of ash borer and have been using Bayer insectiside on it for 4-5 years now. I live in Maple Grove, so ash borer is here, but again, no signs of it on my trees and I have other ash that are doing fine.
Seems like advise from web is to trim it and hope for best. I do have clay soil. Tree has been there for about 12-13 years (Planted when fairly large with spade.) Appreciate any advise.
Hennepin County Minnesota
Expert Response
Hello.
It is not easy to find the D shaped exit holes that indicate the presence of Emerald Ash Borer (EAB) because they emerge high up in the tree and the holes are too small to see from the ground and maybe from your deck vantage point.
Having said that, it seems that the advice to trim and hope for the best is second best. What's best is to contact a certified arborist. The die back in the tree is concerning and it is known that treating trees for EAB with an insecticide has met with mixed results. So an examination by an arborist could confirm EAB or at best determine the real issue and treatment that will save the tree.
Best of luck!
It is not easy to find the D shaped exit holes that indicate the presence of Emerald Ash Borer (EAB) because they emerge high up in the tree and the holes are too small to see from the ground and maybe from your deck vantage point.
Having said that, it seems that the advice to trim and hope for the best is second best. What's best is to contact a certified arborist. The die back in the tree is concerning and it is known that treating trees for EAB with an insecticide has met with mixed results. So an examination by an arborist could confirm EAB or at best determine the real issue and treatment that will save the tree.
Best of luck!
Thank you! Can you recommend a good arborist in the North Metro? Thanks.
Joe
Joe
Hello.
I'm sorry if this is a repeat of a reply I've already sent but the AaE listserve is indicating I haven't answered your last question about recommending a good arborist.
The UofMn Extension Service does not make recommendations but it does provide a page guiding one in selecting an arborist and also has a link to Tree related resources. Here is the link.
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/]
I hope this helps.
I'm sorry if this is a repeat of a reply I've already sent but the AaE listserve is indicating I haven't answered your last question about recommending a good arborist.
The UofMn Extension Service does not make recommendations but it does provide a page guiding one in selecting an arborist and also has a link to Tree related resources. Here is the link.
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/]
I hope this helps.
