Keeping a healthy, green lawn in Connecticut isn’t just about mowing — it’s about timing. New England weather is unpredictable, and knowing when to fertilize, aerate, seed, and prepare for snow makes all the difference.
At All Seasons Maintenance, we’ve been caring for lawns across Connecticut for over a decade. Here’s our expert-backed, month-by-month Connecticut lawn care calendar to help you get the most out of every season.
Monthly Lawn Care Schedule for Connecticut Lawns
March – April: Early Spring
Focus: Wake up your lawn
- Light raking to remove debris and dead grass
- Apply pre-emergent weed control (before soil hits 55°F)
- First mow of the season (only if grass is 3″+)
- Test soil pH and consider liming if needed
- Begin fertilizing with slow-release nitrogen
Tip: Do not aerate or overseed until the soil has fully warmed.
May – June: Late Spring
Focus: Growth, feeding, and weed control
- Spot treat for dandelions or crabgrass
- Apply second round of fertilizer (use weed-and-feed if needed)
- Mow regularly (keep blades sharp and grass at 3″ height)
- Light watering if rainfall is under 1″ per week
Overseed any bare patches now — before heat sets in.
July – August: Summer
Focus: Protect and preserve
- Water deeply, early in the morning (1–1.5″ per week)
- Mow less often and raise blade height to reduce stress
- Avoid fertilizing during peak heat
- Watch for signs of grubs, fungus, or drought stress
Avoid cutting more than ⅓ of grass height in one mow.
September – October: Fall
Focus: Core lawn care & preparation
- Core aeration + overseeding — most important time for this in CT
- Apply fall fertilizer (high potassium, lower nitrogen)
- Dethatch if needed
- Final mowing (lower blade to 2.5″ before winter)
Fall is your lawn’s best chance to recover and thicken up.
November – February: Winter
Focus: Rest and prevent damage
- Keep lawn clear of leaves, branches, and ice
- Avoid foot traffic on frozen or snow-covered grass
- Consider dormant seeding during warm winter stretches
- Service lawn equipment in the off-season
Now’s the time to plan your spring lawn care service.
Why Timing Matters in Lawn Care
Lawn care isn’t one-size-fits-all — and Connecticut’s climate is especially unique with:
- 4 distinct growing seasons
- Heavy snow in winter and heatwaves in summer
- Soil types that vary from coastal sand to inland clay
Getting your seasonal timing right helps:
- Prevent weed and pest outbreaks
- Improve turf density
- Reduce water usage and fertilizer waste
- Promote root growth during critical months
Want a Lawn That Looks Great All Year?
At All Seasons Maintenance, we handle every aspect of lawn care:
- Seasonal fertilization programs
- Aeration and overseeding
- Mowing and edging
- Weed and pest control
- Organic lawn care options
📍 Serving all of Connecticut with reliable, professional service tailored to your lawn’s needs.
Contact us now to schedule your free lawn analysis or sign up for a seasonal maintenance plan.
Frequently Asked Questions
When should I start fertilizing my lawn in Connecticut?
Start in early spring (late March–early April) once the soil thaws and grass begins to green up.
What’s the best time to aerate in CT?
Late summer to early fall (September) is ideal for core aeration and overseeding.
Should I mow in late fall or before snow?
Yes — do one final mow at about 2.5″ to prevent matting and mold under snow cover.