Summer brings sunshine, backyard barbecues, and more time outdoors — but it also means heat stress, turf insects, and unpredictable rainfall. Without proper care, even the most beautiful lawns can quickly lose their curb appeal.
Whether you’re maintaining your lawn for self-satisfaction, neighborhood standards, or protecting your home’s resale value, these summer lawn survival tips will help you keep your grass green and pests at bay.
1. Weed Control: Can I Treat Weeds in Summer?
Weed control starts early in the year, but summer management is still possible.
- Pre-emergent herbicides: Applied in early spring, these stop weeds before they germinate.
- Post-emergent herbicides: Used to spot-treat weeds that have already sprouted.
Different weeds require different targeted treatments:
- Broadleaf weeds
- Sedges
- Grassy weeds
Always read product labels, wear protective gear, and use herbicides carefully. Spot-treating weeds is better than blanket spraying the whole lawn. If you’re unsure, hire a professional lawn care service to apply seasonal treatments safely and at the right time.
2. What Height Should I Cut My Grass?
Mowing height plays a big role in turf health. Taller grass shades the roots, helping them stay cooler, resist stress and outcompete weeds.
- St. Augustine grass: Best at 4 inches
- Bermudagrass: Performs better with a shorter cut of ½ inch to 1 ½ inches depending on the variety.
General mowing rules for summer:
- Mow once a week
- Avoid mowing too short — this weakens grass and invites weeds, pests, and disease
- Keep mower blades sharp for clean cuts
- Mow when the grass is dry, and not during the hottest part of the day
3. Watering Wisely: Best Practices for Summer Irrigation
Watering is one of the most critical parts of summer lawn care.
- Best time to water: Early morning or late afternoon (so it dries before nightfall)
- Avoid: Midday watering, which wastes water due to evaporation
- Use a rain gauge: Place it near your walkway or driveway as a reminder to adjust watering after rainfall (Automatic rain gages shut off irrigation automatically when a preset limit has been reached)
- Irrigation cycles:
- Rotors: average 45-60 minutes to apply 1″ of water
- Sprays: average 20–30 minutes to apply 1″ of water
- Water deeply, less often: Shallow, frequent watering weakens root systems
Overly dry soil can become hydrophobic (repelling water). When this happens, rainfall or irrigation may run off instead of soaking in, leaving grass thirsty.
Solution: You can break your irrigation schedule into several shorter run times during the same cycle to apply an equal amount of water but to discourage run off and to allow water to sink into the soil.
4. Fertilizing Your Lawn in Summer
Fertilizer timing and type are crucial during hot months.
- Use iron supplements or organic options (like Milorganite)
- Avoid high-nitrogen fertilizers in mid-summer — they stress grass that’s naturally slowing growth in the heat
- Follow local ordinances to prevent fertilizer runoff, which can harm waterways and wildlife
- Save higher-nitrogen applications for early spring or early fall
5. Pest and Disease Prevention
Summer heat encourages insects and turf diseases, especially if your lawn is stressed.
- Keep mower blades sharp to reduce plant stress
- Avoid overwatering or watering at night, which creates conditions for fungus
- Reduce nitrogen fertilizer to limit insect and disease outbreaks
- Watch for signs of chinch bugs, grubs, and fungal patches
6. Lawn Equipment Care: Mowers, Edgers, and More
Your tools are as important as your turf. Proper equipment care can prevent spreading weeds and disease.
- Mower preference: Push mowers are gentler on lawns than heavy zero-turn mowers, reducing soil compaction and rutting
- Cleaning: Hose or blow off mower decks, above and underneath, after every use to prevent weed seed and disease spread
- Fuel & maintenance:
- Use ethanol-free gas (blue nozzle)
- Mix with high quality 2-cycle oil
- Keep blades sharp and engines tuned
Pro tip: If you use a lawn service, ask them to clean their mower deck before servicing your yard — to prevent cross-contamination- weeds and disease from previous lawns they have serviced.
Summer Lawn Care Checklist
- Mow weekly at the correct height
- Water early, deeply, and efficiently
- Spot-treat weeds with the right herbicide
- Fertilize responsibly (low nitrogen in summer)
- Monitor for insects and disease
- Maintain clean, sharp equipment
By following these summer lawn care tips, you’ll protect your yard from heat stress and pests and enjoy a healthy, green lawn that boosts curb appeal all season long.