• Giant Sequoia Trees

    Sequoia & Kings Canyon

    National Parks California

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  • Road Construction Delays on Park Roads for 2014 Season

    Expect occasional 15-minute to 1-hour delays in Sequoia and Kings Canyon National Parks on weekdays only (times vary), including delays to/from the General Sherman Tree, Crystal Cave, and Grant Grove. More »

  • Vehicle Length Limits in Sequoia National Park (if Entering/Exiting Hwy 198)

    Planning to see the "Big Trees" in Sequoia National Park? If you enter/exit via Hwy. 198, and your vehicle is longer than 22 feet (combined length), please pay close attention to vehicle length advisories for your safety and the safety of others. More »

  • You May Have Trouble Calling Us

    We are experiencing technical problems receiving incoming phone calls. We apologize for the inconvenience. Please send us an email to SEKI_Interpretation@nps.gov or check the "More" link for trip-planning information. More »

Vegetation Protection

orange fencing protects a sequoia tree

Restoration activities involved careful protection of sequoias and associated resources.

NPS photo by Athena Demetry

To protect soils and vegetation, contractors were required to install fencing around sensitive sites and residual vegetation before beginning demolition. Eight-foot tall lumber barricades were placed around mature sequoias to protect the soft bark from damage and to keep equipment from disturbing roots or compacting soils close to the base of the trees. Four-foot tall orange fencing was installed around groupings of trees, shallow root zones, or other sensitive areas. Lath snow fence was wrapped around boles of trees in close proximity to buildings to prevent mechanical damage to bark during removal. Metal sheeting was placed over exposed or shallow sequoia root zones to disperse equipment weight and prevent wheel damage to roots. Travel routes were designated on contract drawings to constrain equipment travel and minimize soil compaction. Incentive for protecting natural resources was supplied by a contract provision by which the contractor could be assessed monetary damages for causing injury to trees, soils, or vegetation. NPS inspectors and a restoration ecologist provided daily oversight of operations. Also prior to demolition, silt fence or excelsior (curled aspen fiber) filter logs were installed in locations where water runoff exits the project site to prevent silt input to streams or wetlands.

Did You Know?

The Four Guardsmen (four sequoias), with the Generals Highway running between them.

Sometimes you will see sequoias in a straight row. This may happen because sequoia seeds prefer mineral-rich burned ground. When a fallen log burns long and hot, it leaves a strip of bare mineral-rich soil — an ideal place for new sequoias to grow. Years later, we see a line of sequoias!