How to water a lawn in a high desert without wasting half of it
Lawn Care 3 min read
Most Northern Nevada lawns are watered too often and too briefly. Here's how to find your actual run time with a tuna can and fifteen minutes.
At 4,700 feet with single-digit humidity and a lot of wind, a Carson Valley lawn loses water fast. The instinct is to water more often. That’s usually the wrong lever.
#Deep and infrequent, and why it isn’t just a slogan
Roots grow toward water. If you water for eight minutes every morning, the top inch of soil stays damp and the roots have no reason to go deeper than that inch. You end up with a lawn that:
- can’t reach moisture when it’s hot
- wilts within a day of a missed cycle
- is easy for shallow-rooted weeds to outcompete
- burns the moment the sprinkler misses a spot
Water longer and less often and the roots chase the water down. A lawn rooted six inches deep survives a hot week. A lawn rooted one inch deep does not.
#Find your real run time with a tuna can
Every system is different — nozzle type, pressure, spacing, slope. There’s no universal number of minutes. But you can measure yours in one cycle.
- Put five or six straight-sided cans (tuna or cat food tins are ideal) around one zone, some near heads, some between them.
- Run the zone for 15 minutes.
- Measure the depth in each can with a ruler.
- Average them, then multiply by four to get inches per hour.
Most lawns here want about 1 to 1.5 inches of water per week in mid-summer, including rain. Divide that by your inches-per-hour to get weekly minutes, then split it across two or three cycles.
#Split long runs so the water soaks in
Our soils tend to be sandy and rocky, but there’s plenty of clay and hardpan around too. On anything that runs off, a single 20-minute cycle puts half the water on the driveway.
Cycle and soak fixes it: instead of 20 minutes once, run 7 minutes three times with 30–60 minutes between. Same water, and it goes in instead of running off. Every modern controller can do this — it’s usually called “cycle+soak” or just multiple start times.
#Water early, and don’t believe the wind
Between about 3am and 8am is the window. Cooler, calmer, and the blades dry as the sun comes up — which matters, because a lawn that stays wet overnight invites fungus.
Afternoon watering in Gardnerville wind is close to pointless. A meaningful share of it never lands where you aimed it.
#Adjust by season, not once a year
The single biggest source of waste we see is a controller set in June and left alone until October.
| Period | Roughly |
|---|---|
| April – May | About half of peak |
| June – August | Peak |
| September | Back to about two-thirds |
| October | About a third, then shut down before the freeze |
Set a calendar reminder for the first of each month to look at the controller. It takes two minutes and it’s the cheapest thing on this list.
#Signs you’re overwatering
Overwatering doesn’t look like a lush lawn — it looks like a struggling one.
- Spongy ground that holds a footprint
- Mushrooms
- Thatch building up fast
- Yellowing in the wettest areas
- Weeds like nutsedge, which love constantly wet ground
If you see those, cut back before you add anything else. Fertilizing a drowning lawn makes it worse.
#When the lawn isn’t the answer
Some parts of a property just aren’t worth irrigating — narrow strips, steep slopes, hot south-facing corners against a wall. Converting those to rock, drought-tolerant planting or drip usually pays for itself in a couple of seasons and looks better than turf that never quite makes it.
We do that conversion work, and we do lawn maintenance for the parts worth keeping green. Tell us about your property and we’ll give you a straight answer about which is which.
- lawn care
- watering
- irrigation
- summer
