Round up damage to ash trees

Asked June 18, 2014, 6:00 PM EDT

I live in southern Richland Co and the ash trees on the south side of my yard look like they have damage from what I think is Round UP. Trees on other sides of yard and in the yard are OK. They have short shriveled up leaves on the bottom 1/3. The tops look somewhat OK. It started last year and is worse this year. Is there anything that can be done to help them survive? I read that a very heavy dose of Miracle Grow or nitrogen can help.

Richland County North Dakota trees and shrubs horticulture

1 Response

We cannot predict whether the trees will survive. It depends upon the type of herbicide and the dose. If the tree received a relatively low dose, it will outgrow the problem by next year. If there is a buildup of herbicide in the tree or soil, you may see deformed foliage for 2 to 3 years. In either case, I would advocate taking extra good care of the trees. Water them when they need it. It is also good to fertilize your trees. Here is a link to a publication on fertilizing trees: http://www.ag.ndsu.edu/pubs/plantsci/trees/h1035.pdfJust make sure not to fertilize your trees after July 1st. Good luck!