Ask a Question forum→Leylandii problem

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May 18, 2020 4:50 AM CST
I have just noticed that there are strange discoloration on the truck of 3 main laylandiis in my garden. Is this canker. I am really worried as i have many of them planted side by side and wondering that this spreads around.what do i have to do?

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Name: one-eye-luke US.Vet.
Texas (Zone 8a)
Quitter's never Win
Hummingbirder Birds Organic Gardener Dog Lover Cat Lover
May 18, 2020 6:38 PM CST
I don't see any dead foliage covering that spot. How do you come up with Canker, because I just don't see it. Your plant is planted too close to that brick wall and you will run into problems with that. If you see a dead spot in the tree that is where Canker will start under dead foliage.
NOT A EXPERT! Just a grow worm! I never met a plant I didn’t love.✌
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
May 18, 2020 6:45 PM CST
Do the trunks get run into by the lawn mower or weed whacker? Did you recently cut branches off to expose more trunk?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
May 19, 2020 5:15 AM CST

Thanks for your reply. No i didnot run into the trunks by the lawn mower. I believe there is something wrong here as the skin of the trucks covered by the gray stuff is comming off. I attached a photo here. Any idea will be appreciated.
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Southwest U.S. (Zone 7a)
May 19, 2020 8:34 AM CST
Keeping in mind that conditions are quite different here, I'll tell you what I know. In our area, EVERY Leyland Cypress eventually develops Seiridium Canker and dies. Here's a link to some information from our local Cooperative Extension Office:

Leyland Cypress is no longer recommended for planting here. Some sources speculate that the disease is actually transmitted at the time the plants are propagated from cuttings in the nursery trade.
I hope that this is not the case in your area!

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