I started 4 clumps of C. comans 'Bronze' from seed last year. Three were planted in the ground, and one was over-wintered in a 1-gallon nursery pot, buried in the top of the compost bin.
You can just see in the photo, the line of demarcation between the reddish-bronze color of the blades on the lower 2/3's, compared to the dry looking tan of the ends.
Darke speaks only to Carex in general. He says evergreen or semi-evergreen species are "best cut back on occasional years, to remove old or winter-dessicated foliage."
Greenlee says, of C. comans specifically; "When cutting back, leave 3-4" above the crown, as plants dislike a close shearing."
Leaving 3-4" above the crown will eliminate the tan dry-looking ends of the foliage, but my question is whether or not those trimmed blades will continue to grow, with their squared-off ends, or will they be overtaken by new foliage?
I'm starting several more plants this year, so I can afford to experiment. I'm thinking about cutting back the one potted plant, and leaving the 3 in-ground plants alone this year.
Any experience trimming Carex comans, in any color?