Maple tree yellowing and dropping leaves - Ask Extension
I have a blaze maple tree in my back yard that has yellowed as the year goes on and dropped its leaves early the last couple of years I have two other...
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Maple tree yellowing and dropping leaves #272125
Asked August 22, 2015, 12:35 PM EDT
I have a blaze maple tree in my back yard that has yellowed as the year goes on and dropped its leaves early the last couple of years I have two other blaze maples that do great and turn beautiful every fall
I have attached a picture of a couple of leaves
The tree also has large bumps on the trunk that and the bark is splitting I attached photos of this as well
We live in Firestone just south of 119 on a hill that has rocky soil very high in clay content
Thank you
Larry Ehrman
Weld County Colorado
Expert Response
It appears your tree is most likely suffering from a nutrient deficiency (though there are a couple other things that could be involved). The selection of maple you are going is prone to several micronutrient deficiencies in our soils. The most common of which is iron deficiency. However, from the pictures I don't believe the issue is iron. The yellowing associated with iron deficiency is normally between the veins of the leaf which remain green. Yellow leaf veins are sometime due to other nutrient deficiencies like boron.
If you want to know for sure what nutrient is involved you can send leaf samples to a lab for analysis of their nutrient content. More information including links to the labs web site and sample submission forms can be found be can be found here: http://www.ext.colostate.edu/pubs/crops/00116.html
Is there anything else that has happened resently around the tree such as constrution or the use of any herbisides?
If you want to know for sure what nutrient is involved you can send leaf samples to a lab for analysis of their nutrient content. More information including links to the labs web site and sample submission forms can be found be can be found here: http://www.ext.colostate.edu/pubs/crops/00116.html
Is there anything else that has happened resently around the tree such as constrution or the use of any herbisides?
