AND that's not all... The more insidious problem is the classic "perched water table". The water that remains in the pot will "hang" disproportionately at the interface between the potting soil and the coarse drainage material resulting in a nearly saturated layer. Especially in the case of bulbs, this can be dangerous. Filling the pot with potting soil results in a more evenly distributed water load... Carlo Carlo A. Balistrieri The Gardens at Turtle Point Tuxedo Park, NY 10987 Zone 6 (845.351.2049) Visit: http://www.botanicalgardening.com/