Post 00239
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Under favorable conditions the lodge-pole is a rapidly growing conifer. In a forty-five-year growth near my home, the varied light and soil conditions were so spotted that in a small area marked differences in growth were shown. A few clusters were vigorous, and the trees showed an average diameter of six inches and a height of thirty-four feet. From this the size dropped, and in one group the individuals were less than one inch in diameter and scarcely tall enough to be used as a cane; yet all were forty-five years old.
The lodge-pole is not long-lived. The oldest one I ever measured grew upon the slope of Long’s Peak. It was three hundred and forty-six years of age, measured twenty-nine inches in diameter, and stood eighty-four feet high. A study of its annual rings showed that at the age of two hundred it was only eleven inches in diameter, with a height of sixty-nine feet. Evidently it had lived two centuries in an overcrowded district. The soil and moisture conditions were good, and apparently in its two hundred and second year a forest fire brought it advantages by sweeping away its crowding, retarding competitors. Its annual ring two hundred and two bore a big fire-scar, and after this age it grew with a marked increase of rapidity over the rate of previous years. A mature lodge-pole of average size and age measures about eighteen inches in diameter and stands sixty feet high, with an age of between one hundred and twenty-five and one hundred and seventy-five years.
The clinging habit of the cones of the lodge-pole pine in rare cases causes numbers of them to be caught by the expanding tissues, held, and finally overgrown and completely buried up in the tree like a knot. Commonly the first crop of cones is the one caught. These are usually stuck a few inches apart in two vertical opposite rows along the slender trunk. Each knob-like cone is held closely against the trunk by a short, strong stem.