Hi Norm,
You might like to look at cyperus species suitable for your region. While scouring rush thrives well in an aquatic position its long lanky roots don't do much to form a structure which secures the ground it roots on
By comparison cyperus forms tough dense root networks in wet positions, it's the sort of plant you can put into a slumping river or canal bank and it will not only hold and secure its ground it will be easy to carve with a shovel
Regards, andy
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