I have recently had a pergola built on a patio with squares of soil left for planting. My climbers are already planted & some came with small supports but have you any ideas on how I can support the plants as they grow apart from nailing green garden twine round the wooden posts which would look very obvious as the wood is oak & at the moment is pale yellow in colour. I have seen pvc coated mesh which you can cut to size - do you think this would do the trick?