If you havesemi-erect blackberries, they are easier to manage on a Double T Trellis. Install four-foot cross arms at the top of a six-foot post. Install a three-foot cross arm about two feet below the top line. String high-tensile wire down the rows, connecting to the cross arms. S...
Similar to above but without thorns. Many of them are semi-erect and benefit from having a trellis to lean on. Trailing Thornless Blackberries These varieties have a weeping structure and must be trellised to be productive. They aren’t as winter hardy as thorned berries and typically do wel...