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America's forestry movement actually started in Ohio with the creation of the American Forestry Association in Cincinnati in 1875.

Division of Forestry
2045 Morse Rd.
Building H1.
Columbus, OH 43229

Bigtooth Aspen (Populus grandidentata)
deciduous tree from the Willow Family (Salicaceae)
 
3 to 5
30'
60'
rapid
full sun
part shade
pyramidal crown
to spreading canopy
prefers moist, deep, rich
Bigtooth Aspen is native to New England, southern Canada, and the midwestern United States including all of Ohio. As a type of poplar, its leaves flutter easily in the slightest breeze, and its white trunks speckled with black marks make it stand out in the winter skyline.

It may be found in river bottoms and near bodies of water, or it also can be located in burned-over forests, abandoned fields, and at the bottom of slopes. It is a pioneer invader of available land, and may form nearly pure stands in areas that have been logged, burned, bulldozed, or left alone.

Its rapid growth allows it to reach heights of 60 feet tall by 30 feet wide in about thirty years with the potential for more growth, with a long, straight central leader that supports a pyramidal crown in youth, and a spreading canopy at maturity.

Its wood is often harvested for pulp in the production of paper. As a member of the Willow Family, it is related to the Willows and other species of Poplar.

Planting Requirements - Bigtooth Aspen prefers moist, deep, rich soils of variable pH, but growth often occurs on gravelly, sandy, or clay soils that are nearly sterile. It is found in zones 3 to 5, in full sun to partial sun.

Potential Problems - Bigtooth Aspen may become subject to the cankers, leaf spots, borers, caterpillars, and other pathogens and pests that ravage the Willow Family. However, in the growth spurt of youth, these problems tend to be minimal, and usually begin to manifest themselves later in the tree's life.

Leaf Identification Features
Bigtooth Aspen has alternate, ovate, shiny leaves with truncate (flattened) bases attached to long petioles, making them easily ripple in the wind. As its scientific and common names imply, it has "big teeth" on the edges of its leaves.
Fall color is mixed, being green, chartreuse, and gold all at once, with premature leaf drop starting in mid- to late summers that have drought.
Other Identification Features
Bigtooth Aspen has large male and female flowers on separate trees in early spring, making this
species dioecious.

The male flowers occur as large pendulous catkins, but it is the

female flowers that produce the cottony seeds that disperse in the wind.

 

The reddish-brown, fuzzy buds of Bigtooth Aspen occur on twigs that are yellowish-gray with prominent leaf scars.

 

 

 

The bark of most Poplars is interesting for both color and texture.

Bigtooth Aspen goes from having white-gray smooth bark with dark longitudinal fissures to white-creamy bark with large black horizontal bands, to furrowed and ridged, dark gray bark    at the base of the trunk.