Doyle Trailing Blackberry Shift Trellis System Doyle Trailing Blackberry Shift Trellises:2 Tower (recommended for 1-5 plants) The poles come pre-drilled for

The poles come pre-drilled for 12-14 gauge wire

They are made of solid fiberglass

Unlike traditional varieties that are tart and prickly

How durable are the fiberglass poles

Doyle Trailing Blackberry Shift Trellis System Doyle Trailing Blackberry Shift Trellises:2 Tower (recommended for 1-5 plants) The poles come pre-drilled forDoyle Trailing Blackberry Shift Trellises are designed to simplify training blackberry plants, delivering strong yields with minimal labor. The trellises feature 1 inch solid fiberglass poles pre drilled for use with 12 14 gauge wire, enabling secure, tidy wiring as your canes grow. Easy to install and economical, this system helps you train plants efficiently and maximize production with less effort. Electric fence wire is recommended and is readily