If you already have them, it's time to redefine the edges of your beds, and then add fresh mulch to them. As you can see in the first picture, the edges of beds have blended with the turf, allowing weeds/grass to crawl in. Using an old school 'edger', you can carve out the line that was once there and achieve a clean edge that looks professional, and is easy to maintain.
If you're not feeling up to edging or mulching...East Concord Grass Roots is! Let me know if I can help!