We moved into a house that had liriope planted as a border, but it's out of control. I struggled with it last summer & it was worse this summer. It is the solid green kind with the purple flower, & the grass had gotten about 1 1/2 feet long. Out of frustration, I cut it down to about an inch from the ground. It goes about a foot into my garden & I've started digging it back to the edge of the border. I plan on also digging some space between each clump of plants as well. Then I'm hoping they'll look more well groomed next summer. Any general advice on this plant? I cut it back before the last winter & it came back with a vengeance this year, so I'm not worried that I've killed it. Should I cover it with mulch when I'm through digging out the over grown mess?

GeorgiaMama