Catmint is easily one of my favorite plants in my garden. (This one is walker’s low.) I divide it and move it around everywhere. Note: it loves full sun and you can plant other things around it that bloom earlier and later to have color throughout the season. I divide this at any time: early in the season with new growth, end of the season when it doesn't matter what it looks like, and in the middle of the summer. If it's really hot out, which could be in early May where I am, you can cut back t