Leyland Cypress Archives
Insects and diseases that can affect Leyland Cypress (Cupressus).
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Bagworms
Bagworm is a caterpillar that molts into a moth in the adult stage. They are easiest to identify by the bags they construct as they feed. Damage includes needle discoloration and injury.
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Bark Beetle
Bark beetles, family Scolytidae, are common pests of conifers (such as pines, Arborvitae, Fir, Juniper, Leyland Cypress) and some attack broadleaf trees. Over 600 species occurring the United States and Canada with approximately 200 in California alone. The most common species infesting pines in urban landscapes
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Juniper Scale
The juniper scale, native to Europe, is now distributed throughout the United States. This armored scale insect occasionally becomes a…
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Seiridium Canker
Seiridium canker is perhaps the most significant and damaging disease on Leyland cypress. This fungus is commonly associated with both twig cankers and twig dieback.
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Spittlebug
This pest is most commonly recognized when the nymphs make the bubbly spittle masses on small branches of conifers.
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Spruce Spider Mite
The Spruce Spider Mite is considered one of the most destructive spider mites in the United States.