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Started By
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What is going on with my leyland cypress trees?
Posted on 8/22/22 at 4:21 pm
Posted on 8/22/22 at 4:21 pm
I have a few of these in my yard. I noticed recently that a few of them seem to be turning brown from the base and creeping upward. The location they are in stays kinda wet. The trees seem to handle the drought better than the constant rain. 
They have been a pain since being planted almost 4 years ago. I still have them strapped b/c they lean over with heavy winds.
See the pics below. Thanks in advance for any ideas and help.
They have been a pain since being planted almost 4 years ago. I still have them strapped b/c they lean over with heavy winds. See the pics below. Thanks in advance for any ideas and help.
This post was edited on 8/22/22 at 4:26 pm
3
Posted on 8/22/22 at 4:58 pm to notbilly
I would check for a canker.
Posted on 8/22/22 at 5:19 pm to notbilly
Could be spider mites but there other could issues as well - like phytophora root rot from excess moisture, etc.
I’m attaching a LSU AgCenter YouTube video of spider mite damage to bald cypress but applicable to Leyland cypress. Also a fact sheet on Leyland Cypress issues from Clemson. Lastly another YouTube video by horticulturist Jim Putman - pay attention to the last 1/3 of the video.
LINK
LINK
LINK
This might be tree you want to cut bait on before you invest to many more years into them and give consideration to planting a more hardy tree.
I’m attaching a LSU AgCenter YouTube video of spider mite damage to bald cypress but applicable to Leyland cypress. Also a fact sheet on Leyland Cypress issues from Clemson. Lastly another YouTube video by horticulturist Jim Putman - pay attention to the last 1/3 of the video.
LINK
LINK
LINK
This might be tree you want to cut bait on before you invest to many more years into them and give consideration to planting a more hardy tree.
Posted on 8/22/22 at 8:29 pm to ronk
quote:
I would check for a canker.
Thanks Ronk. I looked this up. I don't know if this is what my current problem is, but I've certainly had this issue before with these trees. I'd have random branches dying while the branch next to it was perfectly fine. I just didn't know what it was called.
Posted on 8/22/22 at 8:36 pm to CrawDude
quote:
Could be spider mites but there other could issues as well - like phytophora root rot from excess moisture, etc.
Thanks for the info. I'm reading about these things. The pics of spider mite damage looks kinda like my issue, but the root rot seems more accurate. The trees are in spot that has stayed wet for a while. They were doing just fine until all of the rain the last couple of months.
quote:
This might be tree you want to cut bait on before you invest to many more years into them and give consideration to planting a more hardy tree.
definitely agree with you. My problem is I'm looking for a unicorn of a tree. I need something that can be at least 12' for a privacy screen near my pool. So I also need it to be pretty thin so it doesn't grow over the pool while not shedding into my pool at different times of the year.
Posted on 8/22/22 at 11:26 pm to notbilly
quote:
definitely agree with you. My problem is I'm looking for a unicorn of a tree. I need something that can be at least 12' for a privacy screen near my pool. So I also need it to be pretty thin so it doesn't grow over the pool while not shedding into my pool at different times of the year.
Look into Green Giant Arbovitae which has a similar look and growth characteristics as Leyland Cypress. According to the LSU AgCenter it does better in our heat and humidity and has become a popular replacement for Leyland Cypress. I don’t have any personal experience with it, maybe others have and can share their experience, as you don’t want to replace one problem tree with another.
Maybe speak with the most knowledgeable staff person at a retail plant nursery. Whatever you plant raise the planting bed/rootball of the tree 4 to 6 inches above lawn grade to promote better drainage around the tree’s root system.
Posted on 8/23/22 at 6:22 am to notbilly
Leylands are hard to grow in South Louisiana but they do have a variety called the Murray Leyland that is supposed to be better in our humid area. We have a few and they are doing good
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