Raspberries runners can be unwired from planting stakes or trellises in the fall and their roots dug up to be replanted. The runners spreading away from the mother plant have their own root-balls that can establish hardy daughter plants if the runners are healthy, disease and pest-free. It is recommended that you transplant new raspberry stock every five to seven years to maintain healthy plants that are free from pests and diseases.
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Things you need
- Gardening shears
- 10-10-10 fertiliser
Carefully dig up the roots of the suckers or daughter plants with a gardening trowel during the fall, when the raspberry plant has finished producing fruit. Snip off the root balls from the mother plant with gardening shears, ensuring that some soil remains around the roots.
Prepare the raspberry soil bed by mixing in organic compost and 1.36kg. of 10-10-10 fertiliser per 100 square feet of soil. Plant the raspberry daughter plant root system up to 6 inches below the soil surface, tamping the soil down with a trowel. Evening planting, when the temperatures are lower, reduces stress on the plant. Water the transplant immediately.
Trim back the canes, removing about two-thirds of their tops to balance cane and root growth. The remaining cane can lay on the ground during the winter as it grows back. You can also cover the new plants with 2 to 3 inches of mulch if you experience hard frosts in your area.
Remove the mulch and runners from the ground in March and wire the raspberry transplants to gardening stakes to promote flowering and new fruit growth. Check for any overwintering damage, and trim away the damaged or dead parts with gardening shears.
Apply another 1.36kg. of 10-10-10 fertiliser to the raspberry canes as budding starts to occur. The fertiliser can either be broadcast in a wide swath over the raspberry plant row or banded one foot to either side of the plants.
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- New Mexico State University Cooperative Extension; Fall Time to Plant Garlic and Transplant Raspberries and Blackberries; George W. Dickerson; 2007
- North Carolina State University Cooperative Extension; Raspberries for the Home Garden; E. B. Poling; 1996
- Washington State University Cooperative Extension; Growing Small Fruits for the Home Garden; Charles A. Brun