I have been given a bunch of narrow concrete blocks and when I stack them on their sides, they are about the same height and thickness as a wooden sleeper – however, they are narrow in the centre.
I’m going to install them as a border to my vegetable beds and plant something in the hollow centre. Besides raising the vegie bed, the idea is that it’ll look good and attract pollinators to the vegetables.
Does anyone have any suggestions for plants that I should use in the concrete hollows?
I was thinking of alyssum because you can get perennial varieties, it will spill nicely over the sides and will attract plenty of pollinators.
I would think comfrey roots are to big for such a small space?? What about annual herbs like basil, coriander, spinach?? Flowers – definitely calendular and yes, they are edible! If you want really bright colours, petunia or pansies, or more subtle colous, violas….
It will obviously curb the comfrey from spreading, but the tap root would travel down into the sub soil, like it always does and it would survive. Providing you put a small enough piece in to begin with.
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