Answer: This grass should be winter hardy for you, cutting them off short in early spring is a routine thing to do, so I am not sure what happened. Perhaps they were located in a spot that was too wet, or perhaps there was some accidental herbicide exposure, or something unusual happened. If just a few shoots are growing it sounds like they suffered severe damage. You might want to replace them as it will take a long time to regrow a solid clump from a tiny start. I would suggest you try to trouble shoot what happened with your nursery staff before replacing them in the same spot, just in case it is not well suited to them.
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