Grass in Your Landscape Is Crucial for the Environment and Increasing Rainfall - natural grass benefits environment
- Kirk Harris
- 1 day ago
- 3 min read
Why Grass in Your Landscape Is Crucial for the Environment and Increasing Rainfall natural grass benefits environment
In the ongoing conversation about water conservation and climate resilience, natural grass is often misunderstood as a water-waster. In reality, well-managed grass is one of the most effective tools we have for protecting the environment and actively increasing local rainfall. Why Grass in Your Landscape Is Crucial for the Environment and Increasing Rainfall natural grass benefits environment
Grass: Nature’s Powerful Water Pump
Grass and other vegetation drive the small water cycle and summer rainfall through evapotranspiration (ET) — the process where plants draw water from the soil and release it as vapor into the atmosphere.
According to NASA and USGS research, plants return a massive portion of land precipitation (often two-thirds or more) back to the air via ET. Healthy grass excels at this: it can transpire 3–5 mm of water per day, cycling 70–90% of applied water back into the atmosphere within 24–48 hours. This rapid recycling creates higher local humidity, supports cloud formation, and leads to more precipitation — studies show vegetation can boost local rainfall by 5–25% in many regions.
Unlike slow-moving water in aquifers (decades to centuries) or terminal lakes, grass keeps water moving quickly through the system — a process often called “Growing the Flow.” The opposite of "Slow The Flow"
Key Environmental Benefits of Grass in Your Yard
Increases Local Rainfall By pumping moisture into the air, grass contributes to precipitation recycling. Research on vegetation restoration shows that increased ET from grasslands and turf significantly enhances local and downwind rainfall. Removing grass for gravel or artificial turf breaks this cycle, leading to drier conditions over time.
Cools the Environment Grass acts like a natural air conditioner. Through ET, it can lower surrounding temperatures by 3–15°F, reducing urban heat islands far more effectively than hard surfaces or artificial turf. In Utah studies, combinations of trees and grass provided the best cooling for neighborhoods.
Reduces Runoff and Erosion Deep grass roots improve soil infiltration, filter pollutants, recharge groundwater, and prevent flooding. Bare or paved surfaces send water rushing away, carrying contaminants with it.
Supports Biodiversity and Air Quality Grass produces oxygen, sequesters carbon, supports soil microbes and insects, and improves mental health by creating usable green space.
Long-Term Water Security Healthy vegetation prevents desertification and maintains the moisture feedback loops that sustain rainfall. Areas with less vegetation often experience declining precipitation over time.
Grass vs. Alternatives
Artificial turf and heavy xeriscaping (or “zeroscaping”) may save water short-term, but they create heat islands (up to 50–80°F hotter), generate zero evapotranspiration, increase runoff, and contribute microplastics and chemicals to the environment. Natural grass, when managed correctly, delivers far more environmental value.
Natural Grass vs. Artificial Turf: Not Even Close
Calling artificial turf “turf” is an insult to natural turf — because it is the exact opposite in nearly every environmental benefit.
While natural grass actively cools the air, recycles water, filters pollutants, and supports life, artificial turf does the reverse:
It creates extreme heat (often 50–80°F hotter than natural grass)
Produces zero evapotranspiration or rainfall benefit
Generates microplastics and chemical runoff (including PFAS)
Increases urban heat islands
Offers no carbon sequestration or biodiversity support
Natural grass works with nature. Artificial turf works against it.
Practical Takeaway for Homeowners
You don’t need a perfect golf-course lawn. Even modest, well-managed grass areas — combined with smart watering (deep and infrequent, early morning, allowing dormancy in extreme heat) — make a real difference when multiplied across thousands of yards.
One lawn might seem small, but collectively, grass helps cool cities, clean air and water, protect soil, and quite literally helps grow more rain.
Ready to do your part? Turn off the automatic timer, water only when truly needed, and keep your grass as a living contributor to a healthier, wetter future.
What do you think — is it time to reframe how we view grass in the West? Share your thoughts below!
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