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Shrub Insects

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Updated: February 27, 2023

Lilac: Identify and Manage Problems

There are several species of lilacs that are grown in Maryland.
lilac bloom
Updated: February 27, 2023

Cottony Camellia Scale

A black sooty film covering the top side of shrub leaves can indicate a problem with scale insects.
cottony camellia scale on yew
Updated: February 27, 2023

Aphids on Trees and Shrubs

Aphids are small green insects that suck plant juices from almost all plants at one time or another.
aphids on rose bud
Updated: August 16, 2022

Indian Wax Scale

Indian Wax Scale (Ceroplastes ceriferus) is a non-native type of soft scale insect and can be difficult to manage but easy to see.
A single indian wax scale on a twig
Updated: August 16, 2022

Gloomy Scale

Gloomy scale is a native type of armored scale insect and can be difficult to manage.
Close-up of a gloomy scale on a maple branch.
Updated: August 16, 2022

Japanese Maple Scale in Home Landscapes

Japanese maple scale (Lopholeucaspis japonica) is a non-native type of armored scale insect that can be difficult to manage. It can infest a large number of landscape plants.
heavy infestation of Japanese maple scale
Updated: August 16, 2022

San Jose Scale

San Jose Scale (Quadraspidiotus perniciosus) is a non-native type of armored scale insect and can be difficult to manage as their waxy body covering shields them from predators and certain pesticides.
San Jose scale on a branch
Updated: August 16, 2022

Honeydew and Sooty Mold

Honeydew, a sugary waste product is produced by many sap-sucking insects. Sooty mold is a fungus that grows on the honeydew.
Leaves with and without sooty mold accumulation from magnolia scale feeding
Updated: July 11, 2022

Japanese Maple Scale: A Pest of Nursery and Landscape Trees and Shrubs (FS-967)

Unless Japanese Maple Scale (JMS) is monitored carefully and controlled early, populations of this armored scale can spread throughout a nursery or landscape to many species of woody plants and build up to levels that cause dieback and even death of infested plants.
Updated: April 21, 2021

Euonymus Caterpillar on Shrubs

This caterpillar attacks several species of euonymus shrubs.
euonymus caterpillar