Green wall vegetation
The size of plant materials used in green walls will depend on the required look and finish of the wall at project completion. Planting densities can be as high as 25 to 30 plants per square metre. Decorative patterns can be designed by repeat planting across an area; however, these patterns can be difficult to implement if shadows and light across the different parts of the wall have not been considered. Systems incorporating smaller plants at the outset will take longer to fill out than those using well-established container plants. The dimensions of the planting module will determine the size of the planting stock. Different green wall systems will be better for different types of plant growth habits, from those that grow upright to those with a clumping growth habit, scrambling, cascading or creeping. See here for information on plant selection.