ᐅ Thuja / Cypress Hedge – 3 Plants Suddenly Declining

Created on: 9 Apr 2019 12:18
I
Illo77
I
Illo77
9 Apr 2019 12:18
Hello everyone,

I have a 20-meter (65 feet) long Thuja hedge that is 6 years old. It was planted at about 80 cm (31 inches) tall. For the past nine months, three consecutive plants in the middle have completely declined and turned brown, so you can see through that part.

What could be causing this? All the other plants are fine… This has only started happening in the last nine months.

Dichte grüne Thuja-Hecke am Straßenrand mit Kieseln am Boden


Dichte grüne Hecke mit braunen Verfärbungen, Steine am Boden
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Nordlys
9 Apr 2019 12:22
Road salt poisoning?
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Illo77
9 Apr 2019 12:42
Hm, we didn’t really have snow or ice. On one side there is grass, and on the other side there is a path that is neither cleared nor salted (it leads to a dog exercise area, or rather, it is a nature reserve meadow). Could concentrated dog urine, maybe from a larger dog, cause something like this?
N
Nordlys
9 Apr 2019 12:51
I don’t think so. By now, after six summers, it should be well established. Is it dry? Did it dry out during the summer of 2018?
kaho6749 Apr 2019 13:02
Mice? They can dig many tunnels, which can leave the roots exposed and hollow. During extended dry periods (see last summer), this could become a problem.

In the end, you will probably have to replace them and might learn more when digging. It’s also a good reason to consider native hedge plants that provide flowers and nectar for insects and other wildlife... 🙂