Greenscreen Trellising system is an ingenious idea.
"Manufactured from recycled steel, this three dimensional welded wire system creates a captive growing space three inches deep to allow plant materials to intertwine and grow within the panel. 
With the easily adaptable system of attachment clips, the panel can attach to a building faade, and can span openings between floors or horizontally between posts."
We saw Greenscreen at CaBoom and were able to really get a close look at how this all works. We love the idea of building walls (inside or out!) that can fill up to create the blocks of planting. Various sizes and shapes allow for any imaginable layout to be achieved. The trellises run about $8 sq/ft.
