It consists of rooting tips of the current season's growth. To stimulate more tips, pinch out the top 3 to 4 inches of a cane when it reaches about 2 feet in height. By late August or early September, the new growth will arch down, touch the soil and turn upward. These often root without assistance at the point of the curve where they touch the soil. Rooting can be stimulated in late summer as the drooping canes develop an elongated appearance and leaves become smaller.
Tip layers are easy to make on raspberries and blackberries.
Rooting generally takes place rapidly and the plants may be transplanted later the same season. However, survival of plants is better if transplanting is delayed until just before growth starts in spring. The technique is simple layering in multiple. Wounds should be made on the lower portion of each curve. This method is suitable for vining plants such as honeysuckle, clematis or wisteria.