Blackberry Bush

Question

I received some blackberry bushes from B.C. and decided to plant them in pots for transplanting them outside in the spring. One of the bushes has a shoot growing, approx. 3 feet long and still growing. Should I cut it back or let it grow? The other 3 bushes have not grown any shoots. Could they be dormant?

Answer 1

Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm