Photo of the basic t-post trellis I built yesterday below. Used chain-link fence galvanized tension wire and it seems to be doing well. Enlisted my teenager to help me cut the wire to the required lengths. Blackberry varieties from closest to furthest away from the camera are Arapaho (2nd year), Navaho (3rd year), Sweetie Pie (4th year), Osage (3rd year), Ouachita (2nd year), Caddo (1st year) and Triple Crown (1st year). Not shown I also have Snowbank (2nd year), Prime-Ark Freedom (2nd year) and five Baby Cakes (2nd and 3rd year) blackberries in containers.