Landscape Pest: Bagworm

This common pest of conifers lives most of its life in a cone-like bag.
Similar Topics:
  1. Garden Pests
Suspended Bagworm Moth Cocoon

Suspended Bagworm Moth Cocoon

Safely tucked away in this innocent-looking sack are the eggs for the next generation of bagworms. Picking off the bags in winter, before the eggs have a chance to hatch, is an effective way to control bagworms.

The bagworm is a sometimes serious pest of many conifers. In the spring, the larvae emerge from their winter home, a bag that's usually decorated with the needles or leaves of their plant host. They immediately disperse and start making their own bags, all the while foraging on the foliage of the plant.

In late summer the adult males, which are moths, emerge to mate. The adult females lay up to 1,000 eggs in the fall, and the cycle begins again. There's usually one generation of bagworms per year.

Bagworms are usually found on junipers, arborvitae, spruce, cedars and other conifers, but they also sometimes appear on deciduous trees and shrubs.  If the infestation is serious enough, a group of bagworms can do substantial damage to a shrub. The best control is to simply pick off the bags in fall or winter and destroy them.

Parasitic wasps are the chief predator of bagworms, so maintaining a pesticide-free garden can allow natural controls to develop.

Next Up

Kitchen Remedies Banish Garden Pests

Mix up some simple kitchen recipes for those potentially pesky garden problems.

Pest-Controlling Oils

Today's horticultural oils are effective, low in toxicity and can be applied just about any time of year.

Cabbage Looper Pest Control

When this pest's predators are absent, an infestation can quickly destroy crops.

Identifying and Controlling Garden Pests

Watch out for these pesky garden pests, and learn how to control them.

Common Agave Pests

Plants that seem the most cast iron can indeed have an Achilles' heel. Just like so many mighty giants of history it is often the littlest things that ultimately bring them down.

How to Deal With Pests

Your garden will never be completely free of pests, but damage can be limited by creating barriers to keep them at bay.

Avoiding Pests and Disease in the Garden

Paul James reveals his secrets for controlling pest and disease problems.

Controlling Garden Pests Indoors

Follow this indoor gardening tip to keep the garden pests away.

Pest Pointers: Using Eco-Friendly IPM in Your Garden

IPM uses ecological principles to limit pests, and uses chemical pesticides only as a last resort.

1,000+ Photos

Browse beautiful photos of our favorite outdoor spaces: decks, patios, porches and more.

Follow Us Everywhere

Join the party! Don't miss HGTV in your favorite social media feeds.