Summer is the best time to thin hybrid poplar plantations

Abstract

Hybrid poplar plantations are established by planting dormant cuttings in close spacing, usually 4 x 4 feet. They are cultivated during the first growing season to eliminate competition from grasses and weeds. After the first year, the more vigorous trees effectively shade out lower vegetation. But rapid tree growth often makes thinning necessary after 2 or 3 growing seasons.

Citation

Ford, Harold F.; Snow, Albert G., Jr. 1954. Summer is the best time to thin hybrid poplar plantations. Forest Research Note NE-40. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 2p.