Taking Action Against Weedy Violets I’m almost certain they arrived in my garden as tag-alongs with  plants given to me by fellow gardeners many years ago. When I asked my co-workers about them, they told me they were Labrador (also known as alpine) violets. Most likely they aren’t. Looking at photos of the flowers, they appear to be purple-leaved form of the European dog-violet (Viola riviniana ‘Purpurea Group’), which is often sold by as Viola labradorica. For years, these violets contained themselves to their original pots. All it…