. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 32 trees as the Big Cypress Tree of Tule found in the state of Oaxaca. Mexico, or the Sequoia of California. It is not always easy to tell the age of a tree or that of an even- aged stand of trees. Planting records are often very valuable in determining their exact age. The best means of finding out the exc^ct age of a tree is to ask the owner who kept a record when the tree was planted. This method may be used for some ornamental trees and for forest stands which were artificially established. De- tailed records s
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 32 trees as the Big Cypress Tree of Tule found in the state of Oaxaca. Mexico, or the Sequoia of California. It is not always easy to tell the age of a tree or that of an even- aged stand of trees. Planting records are often very valuable in determining their exact age. The best means of finding out the exc^ct age of a tree is to ask the owner who kept a record when the tree was planted. This method may be used for some ornamental trees and for forest stands which were artificially established. De- tailed records should be kept of all forest stands whether established artificially or naturally. The determination of the age of trees in the original forest or in an unregulated forest is a more difficult task. The age of a young tree like that of a child is more readily determined than that of an old tree. The best test for telling the age of a tree, if planting records are wanting, is to count the an- nual rings on a cross-section of the stem near to the ground and adding to this number, as many years as it took the tree to grow to that height. (Plate I, two lower series-of drawings, and Plate XI, 1, 3). Each ring usually represents the growth of one year. A sec- ond test will apply to such species as White Pine, which develop their lateral branches in distinct and rather regular whorls. (Plate I, upper right figure, and Fig. 19). Each whorl normally represent- a year's growth. If the branches have fallen off one can often fine the scars of the branches on the stem. (See Frontispiece and Figs. 25 and 26). The age of young trees or small branches can also be determined by counting the rings of terminal bud-scale scars (Plate I, upper left figure). The portion of the branchlet from the end down to the first ring of bud-scale scars represents the last season's growth while that between the first and second rings represents the next to the last season's growth and so on. To tell the age of tre
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