How to prevent and treat browning in thuja trees

The browning of thuja trees is a relatively common problem. It can have very diverse causes. One of them is improper watering—the browning of thuja needles can be caused by both a lack and an excess of water.

An inappropriate location can also be a big problem. Remember that thuja trees prefer sunny or slightly shaded places.

Thuja trees also turn brown when the soil is poor or fungal diseases occur. Pests, cat or dog urine, and frost damage can also cause browning.

How do you act when thuja trees start to brown? First of all, make an appropriate diagnosis - carefully examine the thuja tree, check the roots, and look for pests.

These are the rescue actions you can take:

• Watering: plants often deteriorate due to lack of sufficient water. Water thuja trees abundantly, especially on hot and dry days, preferably in the morning or evening. Avoid spraying the crowns;
• Fertilization: in early spring or early summer, use a fertilizer dedicated to thuja trees, which will help replenish missing nutrients;
• Pest control: if you notice the presence of pests, use appropriate plant protection products, following the instructions;
• Treating fungal diseases: phytophthora is a common fungal disease that requires a specialized agent, such as Polyversum WP. Use according to the recommendations on the label;
• Pruning: remove dry and diseased branches to improve the overall condition of the plant;
• Protection: in winter, protect young thuja trees with agrotextile fabric.

You can also use sprays. A homemade solution can be prepared from 10 garlic cloves and 1 litre of water. Of course, you can also use sprays available in stores.