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How to Manage Pests

Pests in Gardens and Landscapes

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Leaves and seed pods of Oregon ash
Leaves and seed
pods of Oregon ash

Ash—Fraxinus spp.
Family Oleaceae (Olive family)

Plant Identification

Most ash species are deciduous and commonly seen as street trees and larger garden trees. Their size varies by species, but they are usually large and grow between 40 and 60 feet.

Optimum conditions for growth

Fraxinus spp. are fast growing trees and widely adaptable to various climates and soil types. They grow best in full sun. Most species do best with regular watering except flowering ash, Oregon ash, and foothill ash, which do best with infrequent summer water.

Fall color of Modesto ash
Fall color of Modesto ash

Pests and disorders of Fraxinus spp.

Invertebrates

Invertebrates (cont.)

Diseases

Environmental disorders

Parasitic plants

Weeds

Vertebrates

Statewide IPM Program, Agriculture and Natural Resources, University of California
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