Quercus lobata, commonly called the valley oak or roble, is the largest of the California oaks. It is endemic to the state, growing in interior valleys and foothills from Siskiyou to San Diego counties. [4] Deciduous, it requires year-round groundwater, [5][6] and may live up to 600 years.

The Valley Oak (Quercus lobata) grows into the largest of North American oaks. It ranges over the hot interior valleys of California where there is a water table within reach of the roots. Valley Oaks grow quickly, reaching 20 feet in 5 years, and 40 feet in 10 years, and up to 60 feet in 20 years.

[wikipedia] Range, Age, Water Requirements, Bark Description: Quercus lobata, commonly called the valley oak or roble, grows into the largest of California oaks. It is endemic to California, …

The valley oak has it all: beauty, drought tolerance, fast growth, and adaptability to a variety of soils. This tree is the largest oak in North America and is loved for its majestic, arching canopy and picturesquely twisted branching patterns.

2025年1月20日 · Quercus lobata, commonly called the valley oak or roble, is the largest of the California oaks. It is endemic to the state, growing in interior valleys and foothills from Siskiyou to San Diego counties. Deciduous, it requires year-round …

Valley oak is an indicator of rich, deep alluvial soils that comprise some of the most fertile farmland in the world [41, 62]. Publications listing valley oak as a dominant or codominant species in habitat typings are as follows: A classification system for California's hardwood rangelands [2]. Blue oak communities in California [3].

2018年8月26日 · Valley oak communities generally occur on deep, well-drained alluvial soils found in valleys and foothills below 2,400 feet. However, valley oaks can occur up to 5,600 feet as components of other vegetation types in the south Coast Range and Tehachapi Mountains.

Valley oaks are large, long-lived deciduous trees that can grow 30 to 75 feet tall. Their roots can grow as deep as 80 feet underground. They are typically found in riparian forests (e.g. on stream levees or high floodplains) or in valley oak woodlands, a mix of scattered oaks and grassland.

Valley oak, Quercus lobata, is considered a keystone species that shapes the ecosystem and its biodiversity where it is found. Valley oaks are important to California’s diverse Native American communities and their cultures, including influencing historic trade …

The Valley Oak is native to the hot valleys of California. The deciduous tree can be over 600 years old. The oak can withstand high heat on one side, but on the other side it needs always contact with groundwater. The leaves of Valley oak are green, sinuate, up to 10 cm (3.9 in) long and up to 6 cm (2.4 in) broad. The leaf margin is smooth.