Why is my birch tree leaves turning brown?

Why is my birch tree leaves turning brown?

What are Birch Leafminers? Perhaps a more apt name would be birch leaf carpenters. 😉 The name comes from the shape of the damage they cause on the upper side of a leaf, appearing as brown or reddish-brown irregular shaped patches (a leaf “mine”). The mine often causes the leaf’s edge to curl as well.

How do you treat river birch leaf blight?

Treating Birch Leaf Blight Fungicide and fertilizer applications should be used to attack the fungus and strengthen the tree. It is also important to dispose of the fallen leaves accordingly as blight can spread easily through rain splash.

How do you know if a river birch tree is dying?


  1. SPOTTY LEAVES. If you notice small spots on the tree’s leaves that are tan, brown, or even black in color, the tree is most likely infected with leaf spot disease.
  2. SOOTY RESIDUE. Sooty mold is another common disease that may infect your river birch tree.

Can you overwater a river birch?

The facts: You can NEVER over water a River Birch! No matter what you think, during the summer months, you are most likely not watering enough. If you see the leaves on your Birch, begin to turn yellow, water water water!

How do you treat river birch fungus?

Apply fertilizer designed for river birch in the spring after the leaves open and the rainy season ends. To help prevent anthracnose, apply copper fungicides to the river birch as the foliage begins to emerge. A second treatment 7 to 10 days later may be necessary.

What kills river birch trees?

Caused by Armillaria fungus, root rot kills the inner tissue of the river birch tree, especially major roots and lower portion of the trunk. Look for stunted foliage or leaves that fall prematurely. Branches at the top of the tree may begin dying before lower areas of the canopy.

How do you keep birch trees healthy?

Cultural practices (mulching, watering, fertilizing and pruning) play an important role in developing and maintaining healthy birch trees. Mulching and proper watering are the most important. These two practices can create the cool, moist soil conditions that birch trees need.

What’s wrong with my birch tree?

Some of the most common are: Bronze Birch Borer – This potentially lethal pest can be difficult to control in birch trees. European Birch Aphid and the Common Birch Aphid – Aphids suck the sap out of the birch tree leaves causing them to yellow and twist. A severe infestation can cause leaf drop and branch dieback.

How often should I water birch trees?

two to three hours a week
Birch trees require moist soil and need a lot of watering in the summer months during the first year of active growth. You should water your birch tree generously for at least two to three hours a week in total.