Recycled door would make a great trellis. This has barbed wire spirals connected together to form a panel. Thinking barbed wire would not be so good as a trellis, as the yearly clean out of dead vines would be a bear!
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Mount Royal Station, in the Bolton Hill - Former home of Baltimore & Ohio Railroad now part of the Maryland Institute College of Art. A great reuse of a beautiful building and an integral part of our neighborhood.