concludes that delaying rooting hormone applications for one totwo weeks after planting signi ficantly increased rooting of the cuttings that were planted in peat. Delaying applications may have played some role in stimulating the vascular cambium to produce callus tissue from which root initials developed. Most roots appeared on the slanted cut end of the cuttings (Fig. suggesting that the slanted cut made a larger part of the vascular cambium accessible to the rooting hormone and also opened the possible barrier caused by the ring of phloem fibers