Tree Diseases

Trees can be vulnerable to certain diseases. We have listed some of the most common tree diseases in the North Carolina with their diagnosis, symptoms, and treatment.

Apple Scab

Description- Apple scab is prevalent among apple trees. This disease thrives in wet and moist areas and is caused by Venturia inaequalis fungus.

Recommendation- Rake the fallen leaves at the base of the tree. Sparing of fungicide will help prevent the spread of disease.

Bud Rot

Description- A tree infected by bud rot has discolored and wilted leaves. This disease can be challenging to diagnose, especially for palms, because the rot typically forms at the top where it can’t be easily seen.

Recommendation- If the tree is infected, it should be sprayed with liquid copper fungicide.

Bacterial Blight

Description- This disease causes young blossoms to turn brown. Bacterial blight can be prevalent among a wide variety of trees, especially those located in damp areas. The bacteria can be transported through the wind, rain, and unclean gardening equipment.

Recommendation- Plant your trees at a proper distance from each other and prune them to allow better airflow within the crown. Avoid using dirty tools that can quickly spread the disease.  Visit for more information about bacterial blight.

Citrus Scab

Description- Citrus scab is common among citrus fruit. It appears like a scab on the surface and causes a halt in the development of the yield. Leaves will also begin to drop in the middle of the season.

Recommendation- Spraying the area with fungicide can help control the disease. Avoid using sprinklers when watering them to avoid spreading the disease to other plants. Spray the tree before the spring begins for a more effective result.

Downy Mildew

Description- Downy Mildew looks like yellow spots on the exterior of the leaves. The side under the leaf is covered with cottony sprouts. This is prevalent among grapevines.

Recommendation- Get rid of every fallen leaf at the base of the plant. In the early summer or the onset of spring, spray the affected area with fungicide. Spray the trees that are within the range of the affected tree.

Greasy Spot

Description- Greasy spot is a fungal disease that is widespread among citrus trees. Look for signs such as yellowish-brownish blister on the leaves’ surface. The tree can lose a large amount of its foliage due to this disease.

Recommendation- Eliminate the fallen leaves in the area to prevent the disease from spreading and from coming back.

Iron Deficiency

Description- Iron deficiency among trees can be prevalent. If you notice leaves that appear green or yellow, chances are, the tree is suffering from iron deficiency. If the disease has completely taken over the tree, you will notice that new leaves are extremely tiny and in yellow color.

Recommendation- To cure the iron deficiency, put iron tablets in the ground, at the tree’s drip line.

Leaf Curl

Description- Leaf curl is caused by fungus and is common among peach and nectarine trees. The leaves will curl and turn red or yellow if infected by this disease.

Recommendation- The trees cannot be treated in the same season, so you can just spray it with fungicide.

If you are affected by any of these tree diseases, you may need a tree removal service in Greensboro, North Caroline.