. Bulletin (Pennsylvania Department of Forests and Waters), no. 38-39. Forests and forestry. 22 The Ailaxthus Tree in Pennsylvania. Young Ailanthiis Trees GroAv Rapidly and Sprout Freely. A'ig- orous Sprouts Produce Big Leaves of Rare Beauty. inches above the ground, the other was inches in diameter at 11 inches above the ground. The former produced 4 sprouts that aver- aged feet in height at the end of the first growing season and the latter supported 2 sprouts that averaged feet in height after one season's growth. Tlie sprouts that originated from the larger trees The Ailanthus
. Bulletin (Pennsylvania Department of Forests and Waters), no. 38-39. Forests and forestry. 22 The Ailaxthus Tree in Pennsylvania. Young Ailanthiis Trees GroAv Rapidly and Sprout Freely. A'ig- orous Sprouts Produce Big Leaves of Rare Beauty. inches above the ground, the other was inches in diameter at 11 inches above the ground. The former produced 4 sprouts that aver- aged feet in height at the end of the first growing season and the latter supported 2 sprouts that averaged feet in height after one season's growth. Tlie sprouts that originated from the larger trees The Ailanthus Tree in Pennsylvania 23 were relatively weak and spindly, while those that developed from the smaller trees were strong and vigorous. Another stump inches in diameter at 16 inches above the ground ])roduced 9 sprouts that averaged only feet in height at the end of the first growing season. An examination of sprouts that make a height growth of 6, 8, to 10 feet during the first season, usually shows that they grow singly or in pairs, and, as a rule, originate from small thrifty stumps. The ailanthus also sprouts readily from the roots, especially when the parent trees have been cut. Old trees that are on the decline also send forth root suckers rather freely. Observations show that where a large number of root suckers develop they often grow at the expense of sprouting from the stump. An area feet square was laid off about an ailanthus stump 9 inches in diameter and cut 8 inches above the ground. On this area were counted 212 1-year old root suckers that averaged feet in height. This is the equivalent of 33,920 per acre. The stump of this tree carried very few sprouts and all of them were relatively weak. A large number of root suckers generally implies a weak sprouting from the stump. Growth studies show that root suckers, as a rule, do not grow as rapidly as stump sprouts. This is due to a concentration of growth in the single stump in contrast with a diffusio
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