Eradicating Rose of Sharon Seedlings and Root Suckers

Rose of Sharon (Hibiscus syriacus) spreads aggressively by seed and root suckers. Pulling seedlings alone won’t stop the colony—suckers emerge from the parent’s root system.

Effective Control

1. Herbicide on Actively Growing Foliage – Apply glyphosate (Roundup) or triclopyr to leaves in late spring through early fall when plants are translocating sugars to roots. Do not apply when dormant—chemical won’t translocate.
2. Cut-Stump Treatment – For larger suckers, cut at ground level and immediately paint concentrated glyphosate on the fresh cut.
3. Persistent Monitoring – New seedlings will emerge from the seed bank for years. Spot-treat as they appear.

Protect Desirable Plants

• Use a shielded sprayer or foam applicator to avoid drift.
• Apply on calm days; follow label rates exactly.
• If suckers are in lawn, use a selective broadleaf herbicide (2,4-D + dicamba + MCPP) instead of glyphosate.

Detailed eradication guide.

One season of diligent chemical treatment during active growth, followed by annual spot-spraying, will exhaust the root system and seed bank.