If the Thuja Smaragd gets brown spots, if the shoots change color or if the tree of life gets brown tips, this is an alarm signal for the gardener. Diseases are rarely responsible for this. Brown discoloration of the Thuja Smaragd is often caused by incorrect care or pest infestation.

Brown discoloration can be the result of too much or too little water

Brown discoloration on the Thuja Smaragd

There are a number of reasons that can cause a Thuja Smaragd to turn brown:

  • Tree of life dried up
  • too much water
  • sunburn
  • frost damage
  • Diseases
  • fungus
  • pests
  • road salt
  • over-fertilization

If it is only brown tips, you can simply cut them off. If the tree of life suffers from brown discolouration over a large area, severe pruning can help. Sometimes the Thuja Smaragd can no longer be saved.

Diseases of Thuja Smaragd

In a good location and with proper care, Thuja Smaragd rarely suffers from diseases. However, an infestation cannot be completely avoided if it is triggered by fungi or pests.

If the tree of life is otherwise doing well, the hedge can usually cope with an illness on its own. You can strengthen them with special preparations from the garden trade.

Brown shoots from fungal attack

Especially in the hedge, fungal infestation is easier due to the dense growth. If you are sure it is a fungus, you can use a broad spectrum fungicide.

Pests turn the tree of life brown

The leaf miner is the primary pest. It causes brown tips and ensures that the discoloration spreads to the entire shoot.

You can recognize a pest infestation by the feeding tunnels in the shoots. In addition, there are small black heaps of feces on the needles.

Cut off and discard affected shoots. In the case of a severe infestation, the use of a spray from the garden trade will help.

Brown discoloration on Thuja Smaragd due to external circumstances

Occasionally the brown discoloration occurs because you cut the Thuja Smaragd at a bad time.

You should only cut Thuja Smaragd when the sun is not shining too much and the branches are not too wet.

Road salt also leads to brown shoots. Therefore, always plant a Thuja hedge at a sufficient distance from roads and paths that are kept free of ice in winter with road salt.

Thuja Smaragd needs a lot of planting distance

Especially with Thuja Smaragd, brown discolorations are more common. If the affected tree of life is in a hedge, it may be because the planting distance is too close. The roots then do not have enough space, it is too dry or too few nutrients are available.

tips

Root rot occurs when the tree of life is in a too damp location. Thuja Smaragd does not tolerate waterlogging at all. Make sure the soil has good drainage.

Category:

Trees