The blackberry is a wonderful-tasting fruit that is easy to grow. However, blackberry plants can spread underground and create dense thickets that may need thinning. If you are relocating plants or have just received some transplants, it is important to replant the cuttings properly, to guarantee a fresh crop of berries in the spring.
How to Transplant Blackberry Plants
Thoroughly water the area where the blackberries are currently growing. Soaking the soil makes it easier to separate the plants and prevents damage to other plants.
Position your shovel about 4 inches away from the blackberry plant you want to transplant and push the blade straight down into the soil avoiding the plant's root crown or rhizome.
Pull the handle of the shovel toward you. This should bring the root crown of the target plant to the surface.
Gently pull the blackberry plant from the ground, keeping as much of the root system intact as possible.
Locate a place in the garden with compost-enriched soil that has enough room for the blackberry plant to spread. Blackberry plants need an area about 4 feet by 4 feet.
Transplant the blackberry plant at the same level it was planted in the previous location. Trim off dead canes and trim live canes by three-fourths.
Water in well.