Eliminating Invasive Zoysia Grass from Beds and Borders

Zoysia grass spreading into flower beds and climbing shrubs is a common headache. Because it's a warm-season grass with aggressive rhizomes and stolons, it won't quit without targeted action.

Immediate Steps

1. Cut it back – Remove all growth from shrubs and beds.
2. Spot-treat with glyphosate (Roundup) – Apply directly to zoysia foliage on a calm day. Use cardboard shields to protect desirable plants. Glyphosate is systemic: it moves to roots but only kills what it contacts.
3. Repeat in 2–4 weeks – Missed shoots will need a follow-up application.

Timing Matters

Glyphosate works only on actively growing plants. In cooler regions, wait until spring green-up. Consult a local nursery for optimal timing in your area.

Long-Term Containment

• Install deep edging (4+ inches) to block rhizome spread.
• Maintain a regular edging routine with a string trimmer.
• Consider replacing zoysia in the lawn with a less invasive grass if it's a persistent problem.

With precise herbicide use and physical barriers, you can reclaim your beds without harming nearby shrubs.