I have a thorned blackberry that I am very happy with and would like more. What is the best way to encourage it to spread or actively propagate it. It does not appear to tip layer like thornless blackberries.
Generally root cuttings would be the best
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When would you take the cutting?
Anytime while dormant , or closer toward spring.before growth starts. Pencil size or bigger , lay flat , cover with a few inches of soil
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Thank you for the advice
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