Insects and pests

Japanese maple scale (JMS), Lopholeucaspis japonica, is an introduced pest on landscape ornamental trees and…

Juniper scale (Carulaspis juniperi) and minute cypress scale (Carulaspis minima) are closely relate…

Lace bugs are common insect pests on many deciduous and evergreen landscape plants. Common host plants include azalea…

By fall, many trees are preparing for dormancy, and the loss of leaves for photosynthesis has a lesser impact at that…

Madrone (Arbutus) canker, the most common disease found on Pacific madrone, begins as bark discoloration, followed by…

Magnolia scale (Neolecanium cornuparvum) is the largest scale species in the United States. This native inse…

Mealybugs (family Pseudococcidae) are common pests of landscape plants, greenhouses, and…

Taxus (yew) in nursery and landscape plantings is susceptible to infestation by two species of mealybugs: Taxus mealy…

Mediterranean oak borer (MOB), Xyleborus monographus, is an emerging threat to valley and blue oaks (Que…