12 Tips To Keep Your Lawn Green This Summer
Last Updated on May 30, 2026 by Duncan
The most effective ways to keep your lawn green in summer are to water deeply 2–3 times per week (not shallowly every day), mow no lower than 3 inches, water in the early morning, fertilize with a nitrogen-rich fertilizer, and aerate compacted soil.
These steps build the deep root system your grass needs to survive summer heat.
Summer is when lawns are under the most stress. At this time, there is heat, drought, foot traffic, and pests and they all have their effects.
Even with all of this, a lush, green lawn through summer is absolutely achievable with the right approach. Below are 12 proven tips to keep your grass healthy and green all season long.
1. Water Deeply and Less Frequently
Watering is the single most important factor in keeping grass green through summer, but how you water matters as much as how often.
Instead of watering for 15 minutes every day, water thoroughly 2–3 times per week and allow the soil to partially dry between sessions.
This approach encourages grass roots to grow deeper into the soil to seek out moisture, a root system that survives even the driest weeks of summer.
Daily shallow watering does the opposite: roots stay short and close to the surface where the soil dries out fastest. When a dry spell hits, shallow-rooted grass browns quickly because there is no deeper moisture to draw from.
Key rule: Deep and infrequent beats shallow and daily, every time.
2. Consider Hiring a Professional
Maintaining a lawn properly through summer where you water on schedule, fertilize at the right time, treat weeds before they spread takes consistent time and know-how. If you are stretched thin, hiring a lawn care professional is a smart investment.
A good lawn care company does more than mow. They handle fertilization, weed control, aeration, and seasonal treatments that most homeowners either skip or time incorrectly.
For a comprehensive comparison of providers including pros, cons, and pricing, House Method’s lawn care reviews are a useful starting point.
3. Water at the Right Time of Day
Timing your watering correctly can make the difference between moisture reaching the roots and evaporating before it does any good.
Best time: early morning. Watering in the morning gives the soil time to absorb moisture before the heat of the day kicks in. The grass also dries quickly in the morning sun, reducing the risk of fungal disease.
Avoid midday watering. The heat causes water to evaporate before it reaches the root zone, you waste water and the lawn gets little benefit.
Avoid evening watering. Grass that stays wet overnight is significantly more susceptible to fungal disease and lawn rot. Without sunlight to help it dry, moisture sits on the blades and soil surface for hours.
4. Mow High
In summer, mowing height directly affects how well your lawn retains moisture and resists heat stress.
Never cut below 3 inches during summer. Taller grass does two critical things: it shades the soil beneath it (keeping roots cooler and slowing moisture evaporation) and it photosynthesizes more efficiently, producing more energy for the plant.
Grass cut too short exposes bare soil to direct sun, which dries out rapidly and creates the conditions for bare patches and weed invasion.
A good rule of thumb: never remove more than one-third of the blade length in a single mowing. Cut little and often rather than scalping the lawn in one pass.
5. Mow in the Morning
The time of day you mow also affects your lawn’s health. Mowing during peak heat puts significant stress on grass as the cut edges lose moisture rapidly and the plant struggles to recover quickly under high temperatures.
Mow in the morning or late afternoon when temperatures are cooler. This also makes the work more comfortable for you and produces cleaner, more consistent cuts.
After mowing, leave the clippings on the lawn rather than bagging them. If you have been cutting the grass correctly where you do it a little and often, the clippings will be small and break down quickly.
As they decompose, they return nitrogen and other nutrients back into the soil, reducing your fertilizer needs naturally.
6. Fix the Bare Spots
Bare patches undermine the look of any lawn. They are typically caused by dog activity, heavy foot traffic, compaction, or pest damage. The good news: they are straightforward to repair.
Here is how to fix a bare spot:
- Remove all debris from the area. This calls you to get rid of twigs, rocks, dead grass, and branches.
- Loosen the surface soil with a sturdy rake to a depth of a few inches.
- Add a layer of fresh topsoil to level the area.
- Rake in a high-phosphorus starter fertilizer to support new root development.
- Spread grass seed evenly over the area.
- Water 3–4 times daily in short spurts for two weeks until seedlings are fully established.
- Once the new grass reaches 3–4 inches tall, begin mowing normally.
7. Get Rid of Weeds
Weeds compete directly with your grass for water, sunlight, and nutrients and they often win. A weedy lawn looks poor and is genuinely less healthy, as weeds crowd out turf and create openings for disease.
The most effective approach is preventative: apply herbicide in spring, before weeds have a chance to germinate. This reduces the amount of active weed removal you need to do through summer.
One important caveat: do not apply weed control while overseeding. Herbicide will prevent new grass seed from germinating.
Wait at least 3–4 weeks after any weed treatment before seeding, and do not apply weed control for 4 weeks after seeding new areas.
8. Fertilize the Lawn
Grass is a plant, and like all plants it needs nutrients to grow well. Summer heat, heavy rainfall, and regular irrigation all deplete soil nutrients faster than usual while fertilizing replenishes them.
Use a fertilizer containing three key nutrients:
- Nitrogen: Promotes vigorous growth and the deep green color of healthy grass
- Phosphate: Stimulates root development and keeps the lawn thick and lush
- Potash: Builds stronger roots and produces thicker, more resilient grass blades
For best results, water the lawn thoroughly one to two days before applying fertilizer.
After application, water again to wash the fertilizer from the grass blades down into the soil where it can be absorbed by roots.
If you prefer to skip the second watering, time the application just before a light rain, but avoid applying before a heavy downpour, which will wash nutrients off the lawn entirely.
9. Test the Soil
Soil testing tells you exactly what your lawn is working with and what it’s missing. Take a soil sample to your local agricultural extension office or research center; testing typically costs very little and gives you actionable data.
Two things to pay attention to:
Soil pH
A pH of 6.5 to 6.9 is ideal for most lawn grasses. If the test shows your soil is too acidic (below 6.5), apply lime fertilizer to raise the pH.
If it’s too alkaline (above 6.9), use a soil acidifier or add organic matter such as compost or well-rotted manure.
Essential Soil Nutrients
Healthy lawn soil typically contains these elements in the following ranges:
- Calcium: 60–80%
- Magnesium: 10–15%
- Hydrogen: 10–15%
- Potassium: 2–5%
- Sodium: 0–3%
If your test results show significant deficiencies, your local extension office can recommend the right amendments for your specific soil profile.
10. Fix Compacted Areas
Compacted soil is one of the most common and overlooked reasons for a patchy, struggling lawn.
When soil is squashed together, air and water can’t circulate freely, grass roots can’t absorb what they need, and the turf gradually deteriorates.
Signs your lawn has compacted soil:
- The surface feels hard or “springy” underfoot
- Weed growth outpaces turf growth
- The area experiences heavy foot or vehicle traffic
- A screwdriver or tine penetrates less than 2 inches into the soil without force
How to fix it:
- Water the lawn thoroughly to soften the soil.
- Within 2 days, core aerate the compacted area and a core aerator pulls plugs of soil from the ground, opening up channels for air, water, and nutrients.
- Top dress with a soil enhancer or compost to improve soil structure.
- Resume regular watering and mowing.
11. Seed the Lawn
Thin, patchy areas of grass are common in summer, caused by heavy foot traffic, pet activity, weed pressure, drought, or a combination of factors.
Fertilizing often helps restore thin turf, but if it hasn’t made a difference, overseeding is the next step.
Two rules to follow when seeding:
- Apply new seed 3–4 weeks after the last weed control application and a herbicide residue will kill new seedlings if applied too soon.
- Do not apply weed control for at least 4 weeks after seeding as the chemicals that kill weeds will also prevent new grass from establishing.
Keep newly seeded areas consistently moist with light, frequent watering until seedlings are well established.
12. Aerate the Soil
Aeration is one of the highest-impact things you can do for long-term lawn health and is often overlooked by homeowners who focus only on watering and mowing.
Lawn aeration involves pulling small plugs of soil from the ground, typically using a core aerator, which creates channels that allow sunlight, water, and nutrients to penetrate much deeper into the root zone.
The result is a stronger, more extensive root system and looser soil that allows grass to spread more easily.
For most lawns, aerating once a year, ideally in early fall or late spring, is sufficient to see meaningful improvement in grass density and color through the summer months.
Frequently Asked Questions
How do I keep my lawn green in summer?
The most important steps are watering deeply 2–3 times per week, mowing no lower than 3 inches, watering in the early morning, fertilizing with nitrogen-rich fertilizer, and aerating compacted soil.
Together these practices develop the deep root system and nutrient balance grass needs to stay green through summer heat.
How often should I water my lawn in summer?
Water deeply 2–3 times per week rather than for 15 minutes every day. Deep, infrequent watering trains roots to grow further into the soil where moisture is available even during dry spells.
Shallow daily watering produces short roots that dry out quickly when conditions get hot.
What is the best time of day to water grass in summer?
Early morning is best. Water absorbs into the soil before the heat of the day causes evaporation, and the grass dries in the morning sun which reduces fungal disease risk.
Avoid midday (evaporation waste) and evening (grass stays wet overnight and becomes prone to disease).
How high should I mow my lawn in summer?
Never cut below 3 inches during summer. Taller grass shades the soil, reducing moisture loss and keeping roots cooler.
Cutting too low exposes bare soil directly to the sun, accelerating drying and creating conditions for bare patches and weed encroachment.
What fertilizer keeps grass green in summer?
Use a fertilizer containing nitrogen (for green growth), phosphate (for root development), and potash (for blade strength).
Water thoroughly one to two days before applying, and again after to carry nutrients into the soil. Avoid applying just before heavy rain, which will wash fertilizer away.
What soil pH is best for a green lawn?
A pH of 6.5 to 6.9 is ideal for most grass types. Test your soil with your local extension office.
Correct overly acidic soil with lime fertilizer; correct overly alkaline soil with a soil acidifier or organic amendments like compost.
How do I fix bare spots in my lawn?
Clear debris, loosen the topsoil with a rake, add fresh topsoil, apply a high-phosphorus starter fertilizer, and spread grass seed.
Water 3–4 times daily in short sessions for two weeks until seedlings establish. Begin mowing once the new grass reaches 3–4 inches tall.
Does aerating the lawn help keep it green?
Yes, aeration is one of the most effective long-term investments for lawn health.
Pulling plugs of soil creates channels for water, nutrients, and air to reach deeper roots, builds a stronger root system, and loosens compacted soil so grass spreads more easily. Aerate once a year for best results.
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