Laminated root rot creates short-term snags of any size and all sizes of down wood, by killing or decaying the root system and butts of host trees. It can create trees with hollow butts, which may continue to provide habitat when they fall.

Long considered undesirable for timber, white fir (Abies concolor) is finally being recognized as a highly productive, valuable tree species. White fir reaches its best development and maximum size in the central Sierra Nevada of California, where the record specimen is 58.5 m (192 ft) tall and measures 271 cm (106.6 in) in d.b.h. (7).

One of the best firs for the east, White Fir reaches a mature height of 75 feet or more but is often much smaller in the landscape, 40 to 50 feet (Fig. 1). It has a pyramidal shape and horizontal branching with the lower branches drooping toward the ground. The tree should be grown in an open area so the lower branches can touch the ground.

2024年12月4日 · Occasionally White Fir will develop Blight (Diplodia, Sphaeropsis, and Sirococcus), Fungal Needlecast, Phytophthora Root Rot, and Rust diseases. These can be treated by a plant health care professional. Contact an arborist if you notice significant dieback or any severe changes in the health of the tree.

White fir (Abies concolor), grand fir (Abies grandis), and red fir (California and Shasta red fir, Abies magnifica and Abies magnifica var. shastensis) are ecologically and economically important conifer species in moist forests in many areas of western North America. White ir is the most widespread of the three species.

White to gray pathogen mycelium often covers infected roots. Decayed wood separates at the annual rings like pages in a book; hence the common name laminated root rot. Diagnostic small red to brown fungal hairs called setal hyphae, which are …

Rot Resistance: Rated as non-durable to perishable regarding decay resistance, with little resistance to insect attacks. Workability: Generally easy to work with both hand and machine tools, though some drying defects may be present or occur while drying the wood.

fungus, called rust-red stringy rot, is found in many conifers including white fir, grand fir, Pacific silver fir, noble fir, California red fir, Shasta red fir, subalpine fir, western hemlock, and mountain hemlock. The causal fungus occurs rarely in Engelmann spruce, white spruce, Douglas-fir, and corkbark fir. Decay is most extensive in white ...

The white fir or concolor fir can grow to heights of 130' in its native range, locally heights are expected to be reduced, often 40' to 70' tall. It has a narrow conical shape with a straight trunk. The bark is a gray color, young bark is smooth, and furrowed with broad flat ridges on older trees.

Decay begins in the roots as a red to brown stain in the heartwood or sapwood. In vertical sections it appears as streaks; in cross section the streaks may appear circular, crescent-shaped following annual rings, or irregular. The decay can be characterized as a pitted, laminated white rot, but the color tends to light yellow-brown.