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Invasive Spotlight: Sudden Oak Death
Sudden oak death is a disease of oak trees that is caused by an invasive plant pathogen Phytophthora ramorum. The disease has been found infecting trees in coastal California counties from Monterey to Humboldt and can be spread by...
April Gardening Tips: Powdery Mildew
As you practice social distancing during COVID-19, you may find yourself spending more time in the garden. As we move into nice weather, we are sharing a few gardening tips for pest management. Powdery Mildew Check for signs of powdery mildew on...
Are Your Roses Diseased?
Roses in the garden can be infected with a variety of bacteria, fungi, and viruses, leading to diseases like powdery mildew and rust. Roses may also be damaged by nutrient deficiencies and other environmental problems. Our Pest Notes: Roses: Diseases...
Armillaria Root Rot in Landscape Trees
What is Armillaria Root Rot? Armillaria root rot is a severe fungal disease that affects trees, woody plants, and some herbaceous plants including palms and succulents. Also known as oak root fungus, Armillaria root rot can rapidly kill trees and...
HLB Detections in Corona Expand Quarantine in Portions Of Riverside, Orange And San Bernardino Counties
The California Department of Food and Agriculture has declared a quarantine following the detection of Huanglongbing (HLB) in multiple residential citrus trees in Corona (Riverside County). This is the first time HLB has been detected in Corona. The...
