Why is the thuja turning brown?
There are a number of causes that cause thuja needles to turn brown. Most discoloration is caused by improper care. But diseases and pests can also turn the tree of life brown. Sometimes the tan is due to external circumstances.
- Thuja is too dry / too wet
- Road salt in winter
- Hedge cut in the sun
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If the arborvitae gets brown tips after cutting, you have probably cut when the weather is too good. Choose a cloudy day for the pruning, but it shouldn't rain.
If you're unsure exactly why the thuja is turning brown, examine the needles, shoots, and stem closely. A remedy can only be found if you know the correct causes.
The thuja hedge will turn green again
If only a few shoots of the thuja are affected, there is hope that the hedge will turn green again. You simply cut off any infected shoots. However, you must not cut behind the green area or even into the waste wood. There the tree of life no longer sprouts and remains bare.
If half the tree is affected, the thuja can often no longer be saved. Then you'd better dig them up and replace them with new trees of life.
In the event of a fungal attack, you must replace the soil before replanting, as the fungal spores are hidden in it. This is especially true if the sick tree of life has suffered from root rot.
Caring for thuja properly
In most cases, the right care ensures that the thuja hedge remains beautifully green and healthy:
- water regularly even in winter!
- Prevent waterlogging
- do not over-fertilize
Thuja likes it neither too dry nor too wet. In the first few years you have to water a tree of life hedge regularly, later whenever it is very dry outside.
Fertilize with organic fertilizers such as compost, horn shavings (€ 6.39 on Amazon *) or manure. Use mineral fertilizers, strictly follow the instructions. When fertilizing trees of life, less is often more!
Fight diseases and pests
If the brown needles or shoots were triggered by a disease or a pest infestation, cut off all infected parts. Dispose of the cuttings in the household waste and not in the compost.
Provide the thuja hedge with soil activator after a disease infestation. As a result, the thuja strengthen themselves and survive illnesses better.
Always use clean tools for cutting so that you do not transmit diseases or pests. Clean the scissors carefully after use.
In autumn, many thujas turn brown and dry inside. Many needles then simply fall off. This is a natural process and not a cause for concern.