The superior growth and productivity of such plants have been well established. Every effort should be made, particularly by commercial growers, to obtain this kind of stock for establishing new plantings. It must be remembered that this superior grade of planting stock is only free of virus and not immune to it. Therefore, the grower must use every precaution to avoid the possibility of the reintroduction of viruses once the new plantings are established. Types of Plant Propagation Nursery stock is available as transplants, suckers, tips, root cuttings, or tissue-cultured plants.
Transplants are larger and more vigorous than suckers.
Transplants usually cost more than suckers. The extra cost charged for these year-old plants is usually not worthwhile for commercial growers. Dormant suckers are the traditional red raspberry transplant. Black raspberries rarely produce suckers. Purple raspberry suckers are sometimes used but, like black raspberries, they are most commonly propagated by rooting primocane tips, i.e., by tip-layering, during late summer and fall.