When to Turn Your Sprinklers Back On in Wenatchee
Turning your sprinklers on too early can waste water, bump your bill, and even crack pipes if we get another freeze. Getting the timing right matters. In Wenatchee and the rest of central Washington, that usually means waiting until nighttime lows stay above freezing and the ground has thawed enough that your lines are safe. For most of the Wenatchee Valley, that window lands in late March through early April, but the exact date depends on the year and your neighborhood.
At Vita Green, we have been starting up irrigation systems for homeowners in Wenatchee, East Wenatchee, Chelan, and surrounding towns for over thirty years. Here is how we decide when to turn systems back on and what we check so you get a full season of reliable watering without surprises.
Why Timing Matters
Water left in the lines is not the only risk. Once the system is turned back on, a late frost can freeze water inside pipes and valves. That can mean broken sprinkler heads, cracked fittings, or worse: leaks you do not see until you get a high water bill or a soggy spot in the yard. Starting too early also means you may be watering when the lawn and plants do not need it yet, which wastes water and money.
Starting too late is less dangerous but still a problem. By the time we hit consistent warm, dry weather, grass and plants are already under stress. Catching the start up window keeps your landscape from playing catch up all season.
When We Typically Start Systems in Central Washington
We do not use a single calendar date for the whole area. We watch nighttime low temperatures and frost risk. A practical rule of thumb:
- Wenatchee and East Wenatchee: Often late March to early April when overnight lows stay above freezing for at least a week.
- Chelan, Manson, and the lake side: Can run a bit cooler; we often plan for early to mid April.
- Leavenworth, Cashmere, and higher spots: Cold air settles in these areas, so we tend to aim for mid April unless the spring is unusually warm.
If you are not sure, calling for a professional irrigation start up is the safest move. We use the same timing logic and can schedule you when it is right for your zip code.
What a Proper Start Up Involves
Turning the water back on at the valve is only one step. A full start up should include:
- Checking the backflow device so it is working and meets local codes.
- Opening the main valve slowly to avoid pressure surges that can damage old pipes or fittings.
- Running each zone and looking for leaks, broken or tilted heads, and blocked nozzles.
- Adjusting spray direction and distance so you are watering the lawn and beds, not the sidewalk or street.
- Setting the controller for spring (often fewer minutes per run than summer) so you are not overwatering early in the year.
If something is broken or leaking, irrigation repairs are easier and cheaper when we catch them at start up instead of in the middle of summer when the system is under heavy use.
What You Can Do Before We Get There
A few things you can do ahead of time:
- Clear leaves and debris from around the backflow preventer and any above ground valves so they are easy to reach.
- Note any spots that stayed wet or dry last year so we can double check those zones.
- Know where your main shutoff is in case we need to turn the water off quickly.
Do not turn the system on yourself if it was professionally blown out for winter. Opening the main valve without going zone by zone and checking for damage can lead to broken heads or hidden leaks. Let a trained crew do the first run through.
After Start Up: Easing Into the Season
Once the system is running, do not jump straight to summer watering. In March and April, the soil is still cool and evaporation is lower. Lawns and most plants need less water than they will in July. Start with shorter run times or fewer days per week and increase as the weather warms and the soil dries out. That keeps roots growing deeper and avoids runoff and waste.
Why Schedule a Professional Start Up
Doing it yourself can work if you know your system and the risks. Many homeowners prefer to have us handle it because we bring the right tools, we know what to look for, and we fix small issues on the spot. We also keep a record of your system so that repairs and new installs are easier down the road. If you are in Wenatchee, East Wenatchee, Chelan, Leavenworth, or anywhere else we serve in central Washington, you can schedule your spring start up with Vita Green and have your sprinklers ready when the season is.