how to control blackberry vines
My wife planted blackberries, and now they are so thick she can hardly get in to pick them.
Certified GKH Gardening Expert
This can be quite a problem. You will want to clean out some of the older brambles. This article will explain how, and when to prune blackberries:https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm