Abstract
Experiments were carried out with cut Douglas-fir ( Pseudotsuga menziezii (Mirb.) Franco) and Leyland cypress [x Cupressocyparis leylandii (A.B. Jacks. & Dallim.)] Christmas trees to evaluate postharvest water uptake, moisture status, needle loss, and tree quality when water was supplied to displayed trees either by an I–V device or a traditional method of placing the base in water. In both experiments, trees consumed about 4× as much water with the traditional method. Based on measurements of twig moisture content, xylem pressure potential ( Ψ), needle loss, and total water consumption, tree freshness and quality was adequately maintained by the traditional method, but not the I–V device.
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