Carex Evergold spreads very slowly and can simply be mowed down in areas where it is not wanted.

Is Carex invasive?

carex flacca(Carex glauca)

Creeping perennial with blue-gray, grasslike foliage that ranges from 6 inches to 2 feet tall and wide. Evergreen only in mildest climates. Tolerant of many soils and irrigation schemes. Not invasive; spreads slowly and can be clipped like a lawn.

Does Carex plant spread?

It makes a graceful, arching clump that doesn't spread. It's ideal for growing in perennial container displays as a foil for brightly coloured flowers, and also looks good planted beside ponds or at the edge of borders.