Red leaves on madrone tree - Ask Extension
I have a Pacific madrone tree I planted over 3 years ago. It has gone from a 13 inch baby to now 5 feet tall. This year it has developed numerous red ...
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Red leaves on madrone tree #874593
Asked June 25, 2024, 10:16 AM EDT
I have a Pacific madrone tree I planted over 3 years ago. It has gone from a 13 inch baby to now 5 feet tall. This year it has developed numerous red leaves and I’m worried there is a problem with the tree. Is this normal for the tree?
Thanks in advance
Washington County Oregon
Expert Response
Thank you for your question, Colleen. I can find no disease that causes red leaves, although there are several that cause leaf spots. https://ppo.puyallup.wsu.edu/madrone/about/diseases/
Red foliage is often an indication of a nutrient deficiency, especially phosphorus. Have you had a soil test for pH and nutrients? It is interesting how the red leaves and spots occur on only a few branches. Do you have any other information? Thanks!
Red foliage is often an indication of a nutrient deficiency, especially phosphorus. Have you had a soil test for pH and nutrients? It is interesting how the red leaves and spots occur on only a few branches. Do you have any other information? Thanks!
Thanks so much. I have an over the counter soil test kit, is that sufficient or is there a way to send, take soil for professional testing near me? I live in Washington county near Rock Creek PCC and Hillsboro.
The madrone is in a very sunny spot on a slope but it is near a very large, old Norway maple (maybe about 20 feet) that roots and steals water over the whole area. The area has been covered in wood chips for the whole time the madrone has been there. I essentially don’t water it at all.
I appreciate any advice. I don’t want to lose my madrone!
Colleen
Research has indicated that the over-the-counter tests are not as reliable as a commercial lab. Here is the one closest to you: https://emswcd.org/tools/conservation-directory/2328/a-l-western-agriculture-laboratories/
If their data is inconclusive, you can have the OSU Plant Clinic examine the leaves. https://bpp.oregonstate.edu/how-submit-plant-materials
If their data is inconclusive, you can have the OSU Plant Clinic examine the leaves. https://bpp.oregonstate.edu/how-submit-plant-materials
