It is frequently desirable to have actively growing tree seedlings available in midwinter for experimental purposes. Most tree species have a dormant period of several months even in a warm greenhouse, and can be used only in the summer unless an effective method of breaking dormancy can be developed. The results of experiments with seedlings of red oak, white oak, and yellow poplar, and with the twigs of red gum and beech are given herewith.
Document Type: Journal Article
Botanical Laboratories, Duke University
Publication date: October 1, 1934
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