Sprinklers February 3, 2026

How to Keep Your Sprinkler System Running Through Colorado Seasons

Blowout in fall, startup in spring, and checks in between keep pipes and lawns out of trouble

Sprinkler maintenance on a Denver area property

February is when Denver homeowners start thinking about the sprinkler system again. Fall feels far away, but last October's choices still matter. If the lines were not blown out before hard freeze, damage may already be waiting under the mulch. If winterization went well, the next step is planning a careful spring startup instead of opening the valve and walking away.

NationScapes has maintained irrigation across the metro since 1998. Colorado seasons punish systems that only get attention when something floods. A simple yearly rhythm prevents most expensive surprises.

Fall Blowout Protects Everything Underground

Water left in pipes, valves, and heads expands when temperatures drop. Cracked fittings and split manifolds often stay hidden until you pressurize in April. Professional blowout uses compressed air to clear lines zone by zone without damaging components when done correctly. Timing tracks first sustained freezes in Denver, Lakewood, and foothill communities where cold comes earlier than the city core.

Many customers join a blowout program so scheduling is automatic each fall. That beats scrambling after the first overnight in the twenties.

Spring Startup Is More Than Opening the Valve

Startup season runs roughly March through May depending on soil thaw and night lows. A proper visit slowly pressurizes the system, checks for leaks at the backflow and valves, runs each zone, adjusts heads, and sets the controller for spring watering. Skipping that walkthrough is how homeowners discover a garage wall wet from a cracked lateral the first warm weekend.

We note heads that need replacement, clogged nozzles, and zones with weak pressure before summer demand hits. Fixing small items early keeps lawn care from fighting irrigation gaps all season.

Backflow testing requirements vary by water district across the metro. Some customers need paperwork filed each year before the supply is turned on. We handle that step during startup where required so you are not caught between the city and a dry lawn in May.

Mid Season Checks Catch Wear You Cannot See From the Window

June through August stress every part of the system. Mowers break heads. Roots lift fittings. Dogs chew risers. Controllers drift out of schedule when neighbors water by hand during a hot week. A mid season maintenance check verifies coverage, catches leaks before the water bill spikes, and adjusts run times as heat and daylight change.

In Arvada and Westminster, wind and slope combine to dry some zones faster than others. Checks rebalance the schedule instead of adding minutes to the entire system.

Maintenance Programs Spread the Work Across the Year

A maintenance program bundles startup, one or more summer visits, and blowout into a single plan. You know when we are coming, and we know your system from the prior season. That continuity matters on older properties with mixed pipe ages and add on beds converted from spray to drip.

Programs also prioritize repair slots when storms or city work knock out a zone. One off repairs still happen, but prevention reduces emergency calls during July heat waves.

If you manage rental properties or a HOA strip, consistent documentation from the same crew each season makes board meetings simpler. You know what was fixed, what was deferred, and when blowout is due without digging through email chains.

What You Can Do Between Professional Visits

Walk the lawn once a month while sprinklers run. Look for heads spraying the sidewalk, sunken bodies, or puddles that never dry. Keep controller batteries fresh if your model uses them. Document zone names on the timer so house guests are not guessing in August.

Shut off and call for help if you hear hissing under the lawn or see water bubbling continuously. Small leaks become large ones quickly on pressurized systems.

Controller apps make remote changes easy, but they also make it easy to run zones in January by accident. Lock seasonal schedules after blowout and confirm the rain sensor still works before summer. Replace backup batteries if your model uses them so a power blip does not wipe programming in July.

Older poly pipe and fittings age differently depending on sun exposure along the house and how deep lines were trenched. A system that survived ten winters may show its first split on the zone that faces south and thaws first each March. Documenting which zones gave trouble last year helps your technician focus the spring startup where it matters most.

Build a Seasonal Rhythm That Matches Colorado

Irrigation here is not set and forget. Blowout before freeze, startup after thaw, checks when the lawn works hardest. Customers on a program get priority scheduling when a heat wave hits and every head on the block seems to fail at once.

NationScapes has kept Denver metro systems running through twenty five years of Front Range weather. For maintenance programs, blowout, startups, or repairs, contact us for a free quote or call 303-934-9130.