Could you tell me if the spiky yucca plant roots become a problem when planted near walls and patios, etc. ? We have one near a swimming pool and have been told that its roots will damage the walls. It now about 1 metre high.
Yucca Plant Roots
Certified GKH Gardening Expert
It is highly unlikely that they will damage the retaining wall because their roots are not agressive in that way. But they are very hard to relocate once they become established. Their roots go very deep and are hard to remove. If any roots are left, they will regrow from them.