Populus trichocarpa and over 1000 other quality seeds for sale. The Black Cottonwood tree is best used as a windbreak. Today, hybrid black poplar timber is used to make artificial limbs, wine cases, pallets, shelving, bowls and toys. Decay fungi are common; two species are noted for significant damage in British Columbia, Spongipellis delectans and Pholiota destruens. Effect of partial defoliation on growth and carbon exchange of two clones of young Populus trichocarpa Torr. It is fast growing and moderately long-lived. SWAN. Heartwood MC averages 162 percent, sapwood MC averages 146 percent. Seeds of black cottonwood (Populus trichocarpa, USDA zones 7 through 10), for example, should be soaked for six hours and those of the eastern cottonwood for 24 hours. Much of the precipitation may fall as snow. Best results in planing were obtained with a hook angle of 15°. Gently water your seeds to keep moist, not soaking wet. Insects and Diseases Many insects feed on black cottonwood, but none have caused serious problems as yet. Most of the interest in the productivity of managed stands is focused on the intensive cultivation of selected clones or hybrids, in which case productivity is quite dependent on the clone under specific conditions. Black Cottonwood can grow up to 45 ft. in the first 7 years and up to 200 ft. tall maximum at mature height. 1993. For sawlog or veneer production, moderate crowding is necessary to maintain stem form, reduce branching and forking, and induce self-pruning. The cottony seeds are often seen drifting in a summer breeze, giving the tree its common name of Cottonwood. Mechanized harvesting is quite suitable for typical plantations on agricultural lands (fiber farms). To maintain other species with cottonwood, spacing and proportion of the super-dominant cottonwood must be controlled. Black cottonwood seedlings do not usually become established in abundance after logging unless special measures are taken to prepare the bare, moist seedbeds required for initial establishment (23). Trichocarpa means with hairy fruits, referring to its fluffy seeds. It can grow 125 to 150 feet tall. Demand for black cottonwood lumber is occasionally good. Sixty percent of the total volume (456 MMCF) of black cottonwood is found in the Puget Sound subregion. Structure and pattern of variation in a 3-year field test. Canadian Journal of Plant Pathology 15:175-181. Male catkins are 1” long, and produce up to 60 stamens. III. Black cottonwood hybrid plantations use cuttings of 1- to 2-year-old wood. The fluffy seeds can travel 20 miles on a breeze, they can be carried on streams and rivers and rest in a vernal pool. Soils Black cottonwood grows best on deep alluvial soils with good aeration and abundant moisture. Raptors such as osprey frequently nest in cottonwood. In bending applications, almost 70 percent of the pieces failed. Gray ex Hook.) These species include Pacific, river, northwest, and Scouler willows. Sometime around May these fruits erupt, creating a “cottonwood snow storm.” The seeds are covered in a white fluff that helps them to travel on the wind for many miles. Not ideal for homes. In much of the Northwest, these conditions are restricted to wet bottomlands. The Botany of Cottonwood. FREE SHIPPING ON ORDERS $60+ TO THE USA & CANADA, Black Cottonwood Tree(Populus trichocarpa). Black cottonwood is normally a dioecious species, with male and female catkins produced on separate trees. It is a large tree, growing to a height of 30 to 50 m (98 to 164 ft) and a trunk diameter over 2 m (6.6 ft), which makes it the largest poplar species in the Americas. Black Cottonwood ( Populus balsamifera ssp. Mixed-species Stands Black cottonwood must maintain a dominant crown position to survive and grow. Detailed Description. Growth and Yield Height growth of black cottonwood often exceeds 5 ft per year for at least 10 years, and trees may reach diameters of 6 to 8 in. The British Columbia Forest Service has identified site-quality classes for natural cottonwood. Cottonwood tree seeds can make quite the mess, so it’s understandable to want them gone. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). causes significant problems with clones from dry areas that are planted in western Washington. A leaf rust (Melampsora sp.) Germination may occur in 1 week or as long as 3 months (depending on the species). & Gray. trichocarpa is a large cottonwood tree of the western United States. If your seeds require pretreatment: you should plant your seeds outdoors before the ground freezes in your area (late September to early November). Keep your growing lights on 14 hours per day. Plant cottonwoods only if your house has a large expanse of outdoor land for maximum effect. The wood is moderately susceptible to sap stains and very susceptible to molds. Logs left in damp conditions show signs of decay within a week or two. Common Name: COTTONWOOD Habit: Tree.Stem: 40 m; young bark smooth, pale yellow-green to gray; older bark furrowed, brown to gray; twigs with swellings below leaf scars; winter bud generally resinous, scales > 3.Leaf: juvenile, adult, late-season leaves may differ in size, shape, hairiness; generally glabrous; blade 3--11 cm, elliptic to deltate, veins pinnate or +- palmate, tip generally elongate. In pure stands, dominance is rapidly expressed and inferior trees die out quickly. Cottonwood favors moist, well-drained soil along waterways. 1990. Tree Planters Notes 43(3):81-86. Uses Cottonwood is used for veneer, pulp, pallets, interior case good parts, boxes, crates, moulding (painted), and studs. Gently water your seeds to keep moist, not soaking wet. There, it quickly sprouts from tiny seeds, cut stumps, roots, and even branch cuttings. Soil Type: Grows best in deep alluvial soils. Oxidative stains are sometimes present in cottonwood. Aggressive roots can disturb concrete and invade water lines. Product Recovery Most cottonwood is used for pulp and paper because of its softness, light color, and ease of bleaching. Once your seeds germinate, move each seed into its own container under the growing lights and on the heat mat. Cottonwood’s paintability rating falls in the middle range when compared to other hardwoods. Although cottonwood trees are really attractive and add to the appeal of their surroundings, their immense size makes them unsuitable for small yards. During a tree's 125-year lifespan, it may rise to a height of 150' with a diameter ranging from 7' to 8'. Typical spacings for pulpwood rotations are 6 X 6 ft to 7 X 10 ft, which accommodate tractors. 1990. Animals significantly hinder establishment of black cottonwood plantations. Last measured in April, 2008, this black cottonwood was found to be standing at 155 ft (47 m) tall, 29 ft (8.8 m) around, with 527 points. The bark is gray with tenticels, and leaves are glossy dark green on top and light green on the undersides. Spatial variation in black cottonwood (Populus trichocarpa) foliar nutrient concentrations at seven alluvial sites in coastal British Columbia. Natural rooting habits are not well known; planted cuttings develop deep, spreading roots. When the wood is wet, it has a characteristic disagreeable odor. Deciduous male catkins are 0.8 to 1.2 in. We pledge that we do not knowingly buy, sell or trade genetically engineered seeds or plants. The trees are notorious for fluffy strings of seeds that get carried great distances in the breeze. It grows in an upright form to a height of 100 feet, with active growth during the spring and … Site Preparation and Vegetative Management Newly planted or establishing black cottonwoods are extremely sensitive to vegetative competition, particularly from grasses and herbs.

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