Almond Tree Pests and Diseases


Almond Tree Pests and Diseases

Unfortunately, almond tree can suffer from various fungal and bacterial diseases and various pests.

Verticillium wilt. It is a soil borne fungal disease that enters the almond tree through the root system and can finally kill the tree. After some years, it actually blocks the water and nutrients that are supposed to be transferred from the roots to the upper parts of the trees, resulting in the collapse of whole branches. It is created from the pathogen Verticillium dahliae. Verticillium wilt has created huge economic loss in the nut orchards of California Valley. Unfortunately, the pathogen can live in the soil for many years, without any plant host. The first precaution against Verticillium wilt would be to keep a field fallow for 4 years, if cotton or Solanaceae species (Tomato, Potato, Tobacco) were cultivated in this field. Alternatively, a farmer can sow a variety of grasses for a couple of years or cover the ground with a special plastic cover (ask a licensed agronomist). The second precaution against Verticilium is to select a rootstock that is resistant to this disease. Over irrigation and the presence of certain weeds favor the rapid spread of the disease.

Crown gall. It is a bacterial disease caused by the pathogen Agrobacterium tumefaciens, which enters most often the young almond tree through wounds. The pathogen’s activity results in the creation of various galls, which can finally block the water and nutrients that are supposed to be transferred from the roots to the upper parts of the tree. Infected trees develop leaves of smaller size and become weak and unproductive.

Mites of various types and sizes can attack water stressed almond trees and reside in the underside of leaves. The most common symptom is that the color of the leaves turn yellow or bronze and often drop. The production is significantly reduced.

Almond Kernel Shriver, Anthracnose and Alternaria Leaf Spot are also common almond tree diseases. Read more on Almond Tree Diseases.

You can enrich this article by leaving a comment or photo of your almond tree pests or diseases. 

1. Almond Tree Facts

2. How to grow Almond tree from nuts

3. Starting an Almond Orchard

4. Almond Tree Climate Requirements

5. Almond Tree Soil Requirements and Preparation

6. Almond Tree Propagation

7. Almond Tree Pollination

8. Planting Almond Trees

9. Pruning Almond Trees

10. Almond Tree Water Requirements

11. Almond Tree Fertilizer Requirements

12. Almond Tree Harvest & Yields

13. Almond Tree Pests and Diseases

14. Q&As Almond Tree

Do you have experience in cultivating almond trees? Please share your experience, methods and practices in the comments below.

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