Clover Control in Lawns: Timing and Technique

Understanding Clover

Clover is a perennial broadleaf weed indicating low soil nitrogen (it fixes its own). While beneficial for pollinators and soil, it disrupts uniform turf appearance.

Herbicide Options

Effective broadleaf herbicides contain:

• 2,4-D (most common)
• MCPP (mecoprop)
• Dicamba (use caution near tree roots)
• Two- and three-way combinations for broader spectrum

Critical Application Rules

1. Timing: Early-mid fall (Sept) optimal; spring less effective
2. Conditions: Actively growing clover, soil moist, no rain 24 hrs, temps <85°F
3. Method: Spot treat rather than broadcast
4. New lawns: Wait 4 mowings before treating; wait 30 days after treatment to seed

Integrated Approach

1. Early September: Spot-treat clover with broadleaf herbicide
2. Wait 30 days
3. Overseed bare areas with quality grass seed
4. Maintain 3" mowing height, deep watering, proper fertilization to prevent recurrence

Cultural Prevention

Clover thrives in low-nitrogen, compacted soils. Regular fertilization (3-1-2 ratio), core aeration, and proper mowing create conditions favoring grass over clover.