How to Kill Common Mallow in Tall Fescue Without Hurting Your Lawn
Direct Agronomic Answer
To selectively kill Common Mallow in Tall Fescue without damaging your turf, apply SpeedZone Lawn Weed Killer (2,4-D 28.57%, Mecoprop-p 5.88%, Dicamba 1.71%, Carfentrazone-ethyl 0.62%), TZone SE (Triclopyr 7.72%, 2,4-D 29.36%, Dicamba 2.22%, Sulfentrazone 0.66%) when air temperatures are between 50°F and 85°F.
Mallow forms a tough taproot and waxy leaf layer as it ages. Triclopyr penetrates the taproot crown to prevent vegetative resprouting.
1. Labeled Safe Herbicides That Kill Common Mallow in Tall Fescue
| Recommended Product | Active Ingredient & Group | Application Temp (°F) | Surfactant & Mixing Protocol | Where to Buy |
|---|---|---|---|---|
| SpeedZone Lawn Weed Killer EPA Reg. 2217-833 |
2,4-D 28.57%, Mecoprop-p 5.88%, Dicamba 1.71%, Carfentrazone-ethyl 0.62% Group 4 + Group 14 (Synthetic Auxins + PPO Inhibitor) |
50°F – 85°F Rainfast: 3h |
Do NOT add surfactant. Adding NIS or MSO increases ester volatility and causes severe contact burn on desirable cool-season turf. | Check Price at DoMyOwn View on Amazon |
| TZone SE EPA Reg. 2217-920 |
Triclopyr 7.72%, 2,4-D 29.36%, Dicamba 2.22%, Sulfentrazone 0.66% Group 4 + Group 14 (Pyridine Auxin + Phenoxy + PPO Inhibitor) |
50°F – 80°F Rainfast: 3h |
Do NOT mix with surfactant when temperatures exceed 75°F. In cool spring or fall conditions (55°F–70°F), 0.5 tsp NIS per gallon improves waxy leaf penetration on Wild Violet. | Check Price at DoMyOwn View on Amazon |
3. Optimal Seasonal Timing & Temperature Thresholds
Spray in spring or early autumn when seedlings are small and tender.
Avoid waiting until woody 'cheeses' fruit capsules form in summer.
4. Diagnostic Checklist: Confirm It Is Common Mallow Before Spraying
- Round to kidney-shaped leaves with 5 to 7 shallow lobes and crinkled margins
- Stems spreading out horizontally from a tough, woody central taproot
- Small white to pale lilac flowers followed by flat disc-like fruit resembling rounds of cheese ('cheeses')
Not 100% sure? Use our AI Photo Weed Scanner or review the full Common Mallow Botanical Profile.