Each of the stand structures had different potentials for habitat and for wood production ... for nesting and foraging. Douglas-fir mortality from black stain root disease was greater where ...

Specifically, homeowner Jon Friesen and his father David took the house's siding – big boards of Douglas fir ... way to get it than with staining the wood," explains D'Arcy Jones, the ...

The true firs, called true firs to distinguish the wood from Douglas-fir, consist of more than 40 ... This can affect finishing, especially with water-based stains. There are some reports of ...

Oregon leads all U.S. states in softwood production and most of that is Douglas-fir. Native Americans traditionally used the wood of Douglas fir for fuel and for tools, its sap as a sealant and ...

These can become sites of attack by wood boring insects including bark beetles. Symptoms from drought stress on Douglas fir include thinning needles and tree crowns. Reddish colored dead branches ...

The study determined that a wood-boring beetle called the flatheaded fir borer (Phaenops drummondi) was a likely culprit behind southwestern Oregon’s Douglas fir dieback. From 2015 to 2020 ...