Pests & Diseases

A well-watered plant that suddenly wilts or unexpectedly drops its leaves could be infected with the soil pathogen Phytophthora. The disease it causes, Phytophthora root and crown rot, can affect many plants, including ornamental trees and shrubs, fruit trees, and vegetables.

While you may not notice symptoms of peach leaf curl until the spring, you should manage it in the fall and winter. Peach leaf curl is a fungal disease that primarily affects peach and nectarine trees.

Learn to identify and manage common tomato problems in Alameda County. Expert solutions for blight, pests, fruit issues, and plant diseases.

After years of drought, we welcome rain in California. But we also recognize that rain can help spread a number of plant diseases. Rain and wind can splash bacteria and fungi from infected leaves, branches, and blossoms to uninfected parts of the tree.

Spring is just around the corner and many types of fruit trees are starting to develop their leaves. If you are growing peaches or nectarines and are now seeing symptoms of peach leaf curl on new leaves, unfortunately it's too late to manage the disease.

Springtime planting is almost here but don't rush to plant seeds until the soil has warmed up! Planting seeds too soon, when the soil is cold and wet, risks losing them to damping-off, a disease caused by fungi and oomycetes in the soil.

Learn how to prevent and treat peach leaf curl with expert advice from the Master Gardeners of Alameda County. Keep your peach trees healthy and productive!

Healthy Soils Week (Dec. 4-8) is a week-long initiative by the California Department of Food and Agriculture (CDFA) to highlight the importance of soil health throughout California. Healthy soils can improve crop yields, sequester carbon, reduce erosion, and increase biodiversity.