Why does Blue Fescue lose its lovely blue-green color after it has
been in the ground for a while?

I use quite a bit of it for edging & borders. When I put in a couple
of new plants the other day, it was really striking how beautiful the
new ones were, by contrast with the washed-out looking
established plants.

I'm in Zone 24, if that's a factor.

--

Persephone