Help identify tree disease and solution please? - Ask Extension
Hello, there are a few trees in my back yard that has this and one has died (see attached photo) and it seems to start infecting a huge plum tree as s...
Knowledgebase
Help identify tree disease and solution please? #564036
Asked May 24, 2019, 1:10 AM EDT
Hello, there are a few trees in my back yard that has this and one has died (see attached photo) and it seems to start infecting a huge plum tree as shown in the picture. What is this? What can we do to help getting rid of the disease so we can save the huge plum tree? Thanks so much!
King County Washington
Expert Response
Hello,
There is not a picture attached? Can you please try again? I noticed the tag says you are in King County. Here is the email address for the King County Master Gardeners. You local program is a great resource for local issues
<personal data hidden>
Thank you,
There is not a picture attached? Can you please try again? I noticed the tag says you are in King County. Here is the email address for the King County Master Gardeners. You local program is a great resource for local issues
<personal data hidden>
Thank you,
Here are the photos! Thank you
Hello,
Thank you for the pictures. I have attached some information on lichen and mosses that grow on trees. Most of the time lichen gets a bad rap as being the cause of a trees decline when in fact the reason lichen are sometime prolific on a tree is because the tree is already in decline. I believe there is something else going on with your trees. Lichen and mosses prefer wet environments, as to fungal diseases that can attack trees. Figuring out a way to open the canopy and get more sunlight in can be very beneficial. Also utilizing a copper based fungicide or lime sulfer can also be useful. I encourage you to get take a sample to your nearest Master Gardener program. I've listed below the contact information for the King County Master Gardeners, but not knowing where you are located you may be closed to a different Master Gardener program. A sample of the leaves may better help the diagnosis of what underlying cause is created a beneficial environment for the lichen.
https://pnwhandbooks.org/plantdisease/pathogen-articles/nonpathogenic-phenomena/algae-lichens-mosses-plants
King County Master Gardeners
<personal data hidden>
<personal data hidden>
<personal data hidden>
The Plant clinic Schedule
https://s3.wp.wsu.edu/uploads/sites/2058/2019/04/2019-Plant-Clinic-schedule.pdf
Thank you for the pictures. I have attached some information on lichen and mosses that grow on trees. Most of the time lichen gets a bad rap as being the cause of a trees decline when in fact the reason lichen are sometime prolific on a tree is because the tree is already in decline. I believe there is something else going on with your trees. Lichen and mosses prefer wet environments, as to fungal diseases that can attack trees. Figuring out a way to open the canopy and get more sunlight in can be very beneficial. Also utilizing a copper based fungicide or lime sulfer can also be useful. I encourage you to get take a sample to your nearest Master Gardener program. I've listed below the contact information for the King County Master Gardeners, but not knowing where you are located you may be closed to a different Master Gardener program. A sample of the leaves may better help the diagnosis of what underlying cause is created a beneficial environment for the lichen.
https://pnwhandbooks.org/plantdisease/pathogen-articles/nonpathogenic-phenomena/algae-lichens-mosses-plants
King County Master Gardeners
<personal data hidden>
<personal data hidden>
<personal data hidden>
The Plant clinic Schedule
https://s3.wp.wsu.edu/uploads/sites/2058/2019/04/2019-Plant-Clinic-schedule.pdf
