Hey guys. I have a 2 metre high concrete wall I need covered in greenery by roughly September/October for a house sale. The plants will be planted up high on the wall and will need to grow downward (due to no room to plant on the ground). Doesn't matter if they actually cling to the wall or just 'waterfall' down out of the pots. The area is pretty much in complete shade. Any suggestions? As you can see from the pic the wall is outside the kitchen window and ugly as! Thanks!