I have enjoyed seeing purple and white violets bloom in our yard each spring. Unlike some neighbors who spray broadleaf weedkillers I don't. I've noticed this year a great many more violets than other years. Perhaps they're responding to the drought of last year into this year. My care for our lawn has included my lawn mower set at almost its highest setting, so I'm not cutting the violets' leaves. The violets have even 'leaped' and proliferated in partial shady areas where in other years grass struggled to grow, and moss used to dominate. My question(s): is it environmentally okay to allow the violets to thrive? They're not as vigorous spreaders as lesser celandine's (which smother and then on the surface die back). I like the violets green leaves that persist and that their roots are holding onto soil instead of washing down our sloped yard. I'm perfectly okay with not having a lot of grass to have to mow. I just don't want to be encouraging a problem.