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Common Plant Diseases in Washington

Posted on by Urban Eden Landscaping

Washington State’s climate creates the perfect environment for many different types of plants to flourish. However, with this abundance of plant life comes the risk various types of plant diseases that can negatively impact the health of your greenery. After reading this, you will have explored some of the common plant diseases in Camas, Washougal, and Vancouver, Washington, as well as how to identify, prevent, and treat these diseases if they ever arise within your landscape.

Powdery Mildew

A frequent concern in Washington’s damp conditions is powdery mildew. This can affect just about any plant. This disease looks just like it sounds: a white powdery substance that forms on the leaves of many plants. Providing spacing between plants, proper air circulation, and using fungicidal treatments can help manage and prevent powdery mildew.

Apple Scab

For those of you who have orchards or gardens consisting of apple trees, you may encounter apple scab. Apple scab is a fungal disease that creates dark and scaly spots on leaves and fruit as well. Applying fungicides, pruning affected branches, and maintaining proper sanitation practices can help contain the spread.

Rhododendron and Azalea Disease

These well-known ornamental bushes are in danger of multiple diseases such as Phytophthora root rot and powdery mildew. Avoid overwatering, make sure to provide good air circulation, and plant in well-drained soil which will be essential in protecting these plants from potential diseases.

Rust Diseases

Presented as rusty colored spots on leaves, rust diseases affect a range of plants including hollyhocks and roses. Quickly pruning away affected areas, consistently inspecting plants, and using fungicides are all effective ways to decrease the likelihood of rust disease affecting your beloved plants.

Verticillium Wilt

This causes wilting and yellowing of leaves, is a soil-borne illness able to affect a large variety of plants and is, by far, the saddest looking disease to come across. Maintaining proper soil health, planting resistant varieties, and practicing crop rotation are all strategies that prevent and manage verticillium wilt.

Fire Blight

Fruit trees are very susceptible to fire blight. This is bacterial disease that causes wilting and a burnt appearance to leaves. Pruning affected branches and using antibacterial sprays can help the spread of fire blight. 

To maintain a garden in Washington State, it requires knowledge and understanding of plant disease. Regular plant care, monitoring, and timely intervention are essential in keeping a healthy and resilient garden. By staying informed of the diseases in your area, as well as acting on preventive measures, you can create and maintain a successful garden ready to take on any challenge. If you would like some assistance in identifying and treating plants diseases, Urban Eden would love to help. Contact us or fill out our FREE estimate request form today! 



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