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Pinus jeffreyi occurs from southwest Oregon south through much of California (mainly on the eastern side of the Sierra Nevada), to northern Baja California in Mexico. It is a high-altitude species; in the north of its range, it grows widely at 1,500 to 2,100 m (4,900 to 6,900 ft) altitude, and at 1,800 to 2,900 m (5,900 to 9,500 ft) in the south of its range.
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. [6] Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3 ) versus 35 lb/cu ft (0.56 g/cm 3 ) for shortleaf pine).
Bull pine is a common name for several species of North American “yellow pine” trees — Genus Pinus, Section Trifoliae (“American hard pines”) — especially large, or unusually large and isolated, specimens of the following. Shortleaf pine (Pinus echinata) Slash pine (Pinus elliottii) Jeffrey pine (Pinus jeffreyi)
In general, this classification emphasized cone, cone scale, seed, and leaf fascicle and sheath morphology, and species in each subsection were usually recognizable by their general appearance. Pines with one fibrovascular bundle per leaf, (the former subgenera Strobus and Ducampopinus ) were known as haploxylon pines , while pines with two ...
The Sierra Nevada subalpine zone occurs between 2,450–3,660 metres (8,000–12,000 ft), and is characterized by an open woodland of several conifer species, including whitebark pine, lodgepole pine, western white pine, mountain hemlock, and Sierra juniper. The vegetation and ecology is determined by the harsh climate, with extensive snow and ...
Gurney's Seed and Nursery Co. is a mail-order seed and garden plant company based in Greendale, Indiana. Founded in 1866, Gurney's specializes in vegetable and flower seeds, gardening supplies and nursery stock, including trees, shrubs, perennials, fruit trees and berries, fertilizers and plant foods.
In 1984, Kinerk sold The Library Store, and founded The Natural Gardening Research Center, a garden supply catalog specializing in biological control of garden pests. The name was confusing to some so, in 1998, it was renamed Gardens Alive! It was named after a catalog called Plants Alive! that had recently gone out of business. It was printed ...
The Jeffrey pine beetle is monophagous on the Jeffrey pine tree, a dominant yellow pine and most concentrated in areas ranging from Southwestern Oregon to Baja California to western Nevada. [4] In its native range, it causes a significant amount of damage as large numbers of tree mortality have been documented.
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