Keeping a lawn lush and healthy in the Spokane area can feel like a guessing game once summer temperatures climb. It’s frustrating to start seeing those brown spots and the instinct is to just turn your sprinklers on even more often. In reality, proper lawn hydration comes down to smart timing and watering depth rather than more daily soakings.

Why Are There Brown Spots When My Sprinklers Run Every Day?
The truth is, brown spots do not always mean your lawn is thirsty! Too frequent watering of your lawn makes an environments for disease and also creates shallow roots. When water only wets the top half inch of dirt every morning, the sun quickly dries up that water and grass roots stay right near the surface. If you want deep, strong roots and a healthy lawn, try this strategy:
- Set your sprinklers for deep, infrequent watering rather than light daily sprinkles.
- Giving your yard one to one and a half inches of water per week spread across two to three days trains roots to grow deep into the ground. Deeper root systems pull moisture from far beneath the soil surface, allowing your lawn to stay green and resilient during ninety degree afternoons.
- Watering less frequently with longer soak times. This encourages roots to grow deep into the ground where moisture lasts.
Overwatering can be just as harmful as underwatering because waterlogged soil suffocates grass roots and invites root rot.
What time of day should I water?
- Early morning between four and nine is the optimal window to run your irrigation cycle.
- Morning watering allows moisture to soak deep into the root zone before the afternoon heat causes heavy evaporation loss. Midday watering is simply inefficient.
- Watering in the evening might seem convenient, but leaving grass blades wet overnight creates high moisture conditions where lawn fungi and turf diseases thrive.
- Be aware, the City of Spokane water conservation guidelines sometimes prohibit specific times for watering your lawn in the summer month.

How to find the best sprinkler schedule for my lawn?
- First determine what it takes to completely water your area. Lay down a few empty containers in each zone around your lawn during a normal watering cycle to measure how many minutes it takes your system to lay down a half inch of water. This is a good starting point for how long your zone should be running at a time.
- Keep in mind that shady areas retain moisture much longer than sunny hillsides, so adjust the run times zone by zone rather than setting every station to the same duration.
- Even during the rainy season, do not rely solely on the rain for your lawn’s hydration. It is rarely enough to keep your grass healthy and it’s unpredictable. Consider using a rain gauge to monitor how much water your lawn is actually getting and supplement when it’s not enough.
Getting your irrigation timer dialed in will save water while keeping your yard vibrant and disease free all summer long.
If you need help adjusting your controller or diagnosing coverage issues across your yard, American Sprinkler & Landscape is always here to help our Spokane Valley and surrounding neighbors maintain great looking landscapes.
Call or text American Sprinkler & Landscape today at 509-290-7966 to schedule an inspection and repair for your irrigation system. You can also send a quote request on our website here.



