Abstract
Abstract Leyland cypress [× Cupressocyparis leylandii (A. B. Jacks.) M. L. Green] stem cuttings were collected in early March and treated with concentrated solutions of indolebutyric acid (IBA) or IBA plus boron. Nontreated cuttings rooted in low percentages producing one or 2 roots. IBA-treated cuttings rooted 90% with best rooting occurring at 0.8 and 1.6% levels. The 1.6 and 3.2% treatments resulted in foliar necrosis, and the cuttings continued to decline after transplanting. Boron had no positive effects on rooting. For best rooting a range of 0.3 to 0.8% IBA-concentrated dip is recommended.
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