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UC IPM Home > Homes, Gardens, Landscapes, and Turf > Trees and Shrubs > Diseases

How to Manage Pests

Pests in Gardens and Landscapes

Cypress canker susceptibility of cypress and conifers with similar foliage when planted away from direct local influence of cool coastal climate

Highly susceptible

Leyland cypress, Cupressocyparis leylandii 1
Monterey cypress, Cupressus macrocarpa

Less susceptible

arborvitae, Platycladus orientalis, Thuja occidentalis
Arizona cypress, Cupressus arizonica
Italian cypress, Cupressus sempervirens
Mexican cypress, Cupressus lusitanica var. benthamii
Portuguese cypress, Cupressus lusitanica
Not susceptible

Incense cedar, Calocedrus decurrens
western red cedar, Thuja plicata
1 Leyland cypress reportedly is more susceptible to cypress canker than other hosts even when planted along the coast.

Chinese elm anthracnose, or black leaf spots
Foliage of an incense cedar tree

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