Knowledgebase

Yellowing Maple tree. #275428

Asked September 03, 2015, 3:53 PM EDT

Hi, 1st time I have ever used this service.

We have a lovely great big Norway Red Maple. Last year the leaves on half the tree started turning yellow and this year they have all turned yellow. We have fed it lots of iron liquid in ground and spray. Still yellow? Have asked and received many answers. So time to ask where I should have started. How do I handle this? Please advise me what to do. Thank You,

John Schrenk CSU 1960

Douglas County Colorado

Expert Response

As you've clearly heard before, iron in Colorado soils is plentiful, but due to the alkaline nature of the soils, the iron is insoluble and generally unavailable to tress, grass and other plants. While iron supplementation can help reduce leaf yellowing of your maple trees, many treatments are ineffective. Even with more effective treatment options, generally administered by a certified arborist, maple trees still don't get as much iron as they truly need and consequently, can have a reduced life span here in Colorado. If you haven't already, you might want to contact a certified arborist for evaluation and treatment of your tree. Here is a list of arborists in Douglas County, Colorado:

Keith Worley

Forestree Development

Larkspur, CO 80118

Jay Carter

Consolidated Arborists of CO Centennial, CO 80015

William Ostrowski

Tree Medicine Tree Service

Englewood, CO 80150

Kelly Gouge

Swingle Lawn & Tree Service Littleton, CO 80122

Sarah Smith

White Oak Arbor

Littleton, CO 80123

Christine Phillips

AAA Emergency Tree Service Denver, CO 80209

M. Manning

Commonwealth Tree & Garden Denver, CO 80129

Kevin Jones

Jones Tree & Lawn

Arvada, CO 80002

Terrence Sheldon

A-1 Stump Removal & Tree Care Arvada, CO 80003

David Merriman

ArborScape

Castle Rock, CO 80104

Mike Landers

Mike Landers Tree Service

Josh Theibald (2014)

Root Tree Service

http://www.roottreeservice.com

Brett Lemaire (2014)

Knothead Tree and Lawn Care

-Douglas County Master Gardeners

Kind Regards, Replied September 04, 2015, 12:01 PM EDT

Yellowing Maple tree. #275428

Expert Response

Loading ...