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Bark Beetle Information

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Bark Beetle Information
Published on: 8/31/2016 12:00 AM


Davis, Calif., Nov. 7, 2016 - The USDA Natural Resources Conservation Service (NRCS) in California is expanding its initiative to assist private forestland owners in addressing tree mortality and other drought-related damage to improve forest health. NRCS will provide financial assistance for landowners with dead and dying conifer forest trees in certain counties. Removing dead tree debris and other woody material will also help reduce the spread of invasive pests and reduce the threat of wildfire. Read more here...


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.  

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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 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. Here is a link to look up a license.

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, US 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 Dept. of Forestry and Fire Protection is a great resource on how to manage firewood pests.


Are Your Trees Susceptible to Bark Beetles? Click below to find out.


CDA - Bark Beetles.png




CDA - CalFire.png For a list of Cal Fire resources on managing and controlling bark beetles, click here.
CDA - USDA.png The USDA provides useful information on forest and grassland health, click here.
CDA - PGE.png ​For information from PG&E on dead, dying or diseased trees near power lines, click here.
CDA - NCRCD.png ​The Nevada County Resource Conservation District has information on what can be done during the outbreak of bark beetles, click here.
CDA - FireSafe NC v5.png ​Nevada County Fire Safe Council provides information on bark beetle detection and prevention here.

For more information, we can be contacted directly Monday-Friday 8am-5pm. Our phone number is (530)265-1222 and we can be reached via email at CommunityDevelopment@co.nevada.ca.us.

Sean Powers
Agency Director
Community Development Agency

950 Maidu Avenue Suite 170
Nevada City, Ca 95959
Hours: 8am-5pm M-F
Phone: 530.265.1222
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