Coastal Douglas fir trees grow in the moist, coastal regions of British Columbia and California. Rocky Mountain Douglas fir trees grow in drier, more mountainous regions, from Canada down to the ...

Two of California's most highly prized trees -- coast redwood and Douglas fir -- are susceptible to Phytophthora ramorum, the pathogen that causes Sudden Oak Death, University of California ...

Douglas fir trees saw the biggest spike in mortality rates compared with previous years. An estimated 3 million Douglas firs died, across 190,000 acres, in 2022 — a massive increase of 1,650 ...

Whether growing along the rim of the Grand Canyon or living in the mist with California’s coastal redwoods, Douglas fir trees are consistently sensitive to drought conditions that occur throughout the ...

Douglas fir is the most abundant tree ... an 18,452-square-mile area that traces the path of the Klamath and Siskiyou mountains from California’s Sacramento Valley in the south to ...

Douglas-fir, Oregon's official state tree, is the most abundant tree species in the Klamath Mountains, ... incense cedar, Oregon white oak, California black oak and Pacific madrone. ...

Waiting in the wings: California's Hunewell Honey is the second-tallest known Douglas fir at 318 feet. Its top is alive, while the Doerner Fir's top is dead. Oldest: ...

For the Edes Building in Morgan Hill, California, a contemporary art gallery and a wine bar, design architect KTGY exposed glulam columns and beams on the interior, pairing this with Douglas fir ...

Researchers with the University of California-Davis took core samples from 122 Douglas fir trees across the region to measure how fast the trees grew over a 91-year period.