Best Ground Cover for Deep Shade: Dwarf Mondo Grass Beats Ivy Every Time

English ivy is an ecological menace—it climbs trees, smothers natives, and creates "ivy deserts." For shady erosion control, dwarf mondo grass (Ophiopogon japonicus 'Nanus') is superior. It forms a dense, 3–5 inch evergreen mat that holds soil, tolerates root competition, and never climbs.

Plant plugs 6 inches apart; they'll knit together in a season or two. The cheapest source? A neighbor's established patch—you can harvest hundreds of divisions without harming the donor planting. It's the tidy, tough, non-invasive solution for deep shade.