Be Prepared! Tire Chains or Cables May Be Required in the Parks at Any Time
All vehicles must carry chains or cables when entering a chain-restricted area. It's the law (CA Vehicle Code, Section 605, Sections 27450-27503). Road conditions may change often. For road conditions, call 559-565-3341 (press 1, 1). 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, please pay close attention to vehicle length advisories for your safety and the safety of others. More »
Invasive Non-Native Plants
Non-native plant species are those that are introduced to an area by humans either intentionally or unintentionally. These plants are also known as alien, exotic, introduced, and non-indigenous. They are an enormous concern for the National Park Service; recent information indicates that non-native plants are infesting 4600 new acres of federal land each day.
Nearly one in eight plant species in Sequoia and Kings Canyon National Parks is non-native. Many of these species appear to have a fairly small impact on the parks, but many others are drastically changing ecosystem structure and processes.
Photo by Jo-Ann Ordano, © California Academy of Sciences; inset photo by Jerry Asher, Bureau of Land Management
Non-native species reduce biodiversity, jeopardize endangered plants and animals and degrade habitats. Some species, such as giant reed, can completely dominate vast areas of land, excluding virtually all vegetation and dramatically altering water and fire cycles. Non-natives are also known to hybridize with native species, altering native genetic diversity and integrity.
Sequoia and Kings Canyon National Parks have a well-researched non-native plant management plan in place. Early efforts have already eradicated at least one highly invasive non-native plant species (yellow star thistle), and have identified several other infestations that are yet in their very early stages. The year 2002 marked a major increase in eradication efforts, with numerous non-native plants removed from the parks by the end of the year. These efforts continue and we look forward to healthy, less-impacted ecosystems in the years ahead.
Did You Know?
Most of the distinctive light-colored rock characteristic of the Sierra Nevada is a granitic rock called granodiorite. A huge formation of this rock, called a batholith, lies within the Sierra. Some 400 miles long and up to 50 miles wide, the Sierra batholith is one of the largest in North America. More...