Can I dig up blackberry plants in the wild and transplant them? If so, when would be the best time?
Certified GKH Gardening Expert
The best time for transplanting blackberries is fall so now would be the time to get the project done. Select a transplant site that provides full sun, air circulation and is well draining. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/growing-blackberry-bushes.htm
Also, it may help to do it in the evening to reduce stress/transplant shock, and be sure to include as much of the roots as possible. If you have not already done so, you may want to prune your blackberry bush as well. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm