Bark Beetle Information

Managing Bark Beetle Infested Trees in Nevada County

Bark Beetles have lived in Nevada County longer than we have, but the drought is causing our trees to become more susceptible to attacks. Being proactive is the best defense against a bark beetle attack. Here are a few ways to become proactive:

• Thinning overgrown trees
• Removing dense underbrush
• Watering high-value trees as necessary
• Remove dead trees around your property, especially trees close to your home

Once an Attack Has Occurred

Aside from trimming and disposing of infested limbs immediately upon detection of a bark beetle attack, little can be done to control an attack once it has occurred. Therefore, identifying a bark beetle attack in its earliest stages could make a difference in tree mortality.

CalFire provides an excellent source of information for managing bark beetles in urban and rural trees as well as links to frequently asked questions, tree health and a tree mortality map.

Removal of Dead Trees

Removing bark beetle-infested trees may help prevent further infestation. In some cases, a permit may be needed to remove the dead trees. We have linked up a CalFire guide (PDF) to help determine if a permit is required.

In some situations, it may be necessary to hire a tree contractor or licensed timber operator to remove a dead tree. A licensed professional will carry insurance against damage or injury. Look up a license online.

Removing Dead Trees Near Power Lines

Removal of trees near power lines can be dangerous. Only line-clearance-qualified tree workers can work within 10 feet of power lines. PG&E can provide advice and assistance. Their toll free number is 800-743-5000, also linked up is their informational site on managing trees and plants near power lines.

Removal of Dead Trees on County or City Land

If you need to report dead or hazardous trees on County, City of Grass Valley, Nevada City, U.S Forest Service or BLM land which abuts your property, contact information can be found at this Resource Conservation District site.

Reduce Bark Beetle Breeding in Cut Wood

Freshly cut wood and wood from salvage logging, forest thinning and tree removals can attract bark beetles which can breed in it. The California Department of Forestry and Fire Protection is a great resource on how to manage firewood pests (PDF).

Additional Information

• Information from PG&E on dead, dying or diseased trees near power lines
• List of CalFire resources on managing and controlling bark beetles
• Nevada County Fire Safe Council information on bark beetle detection and prevention
• Nevada County Resource Conservation District information on what can be done during the outbreak of bark beetles
• USDA information on forest and grassland health

For more information, we can be contacted directly Monday through Friday, 8 a.m. until 5 p.m. Our phone number is 530-265-1222 and we can also be reached via email.