Name: Catmint/Robin PNW WA half hour south of Olym (Zone 8a)
That has been my experience with vinca as well--too hard to pull out!--even though the flowers are pretty in springtime. Ajuga is okay, but the foliage (to me) isn't attractive enough to want it everywhere!
"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso
