Growing on top of brick wall
Hi, I will be building a new garden brick wall of 2 meters high. To soften it up, I want to plant climbers or flowers on top of the wall (so not anything from the side or growing from the ground). There will be some sort of trellis on top to support the plats. My question is, is it possible to grow directly on top of the brick wall? Will this damage the wall in anyway? Or must I use pots?
Many thanks for reading.