Pests & Diseases

Fig 1. Limb dieback and sparse canopy of overwatered olive trees around which turf was planted. Unirrigated trees in the background are healthy. (Photo: L. R. Costello)

Pests in the Urban Landscape: Article

Landscape Tree Damage: It's Not Always a Pest Issue

March 14, 2018

By Janet S Hartin

[From the Spring issue of the UC IPM Retail Nursery & Garden Center News] Most disorders impacting landscape trees result from abiotic (non-living) disorders rather than attacks from biotic (living) pests like plant pathogens, insects, and vertebrates.

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Peach leaves deformed by peach leaf curl. (Photo: Jack Kelly Clark)

Time to Treat for Peach Leaf Curl?

January 8, 2018

By Anne E Schellman

Peach leaf curl is a disease that affects peach and nectarine trees. Although you may not see symptoms right now in the dormant season in California, it's time to think about treatment, especially if your tree had the disease last year.

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