After 18 or 20 years of growth agapanthus can be a real pest. The foolish previous owners who planted it put plants where over time they would hang over wooden retaining walls and wooden steps. The rain then runs down the leaves and rots the wood. That is what has happened down the sides of these steps.
Which are now crumbling.
R said if you can dig them out I will
mulch them up with the Hustler ( big mower ). So I did. ( he sharpened the spade ) This is from the right side. Today I did the left side and rolled the clumps to the bottom.' We then spaded them into more manageable clumps and I laid them in rows for the mower to go over.