Readers ask: When should you turn off your sprinklers in Colorado?

October 2022 · 3 minute read

The best suggestion for when to turn off your sprinklers is right when the cold weather begins. Keep an eye on your local forecast for when the big freeze is coming, and plan around that. Give yourself a few days as a cushion just to be safe, and begin preparations for the winterization process.

When should I turn off my sprinklers in Denver?

Here in Colorado it is important to winterize your sprinkler system in the month of October. Some early birds will winterize at the end of September. That does not hurt anything but may have you doing some watering by hand. Which completely eliminates the risk of freezing.

What month Should I turn off my sprinklers?

As long as there is at least an inch and a half of rain per winter month, you don’t need to supplement it with your sprinklers. When you start seeing rain around October or November, that’s usually a good time to shut off the sprinklers.

What temp should I turn off sprinklers?

For a carefree fall and winter, and an all-systems go-spring and summer, make sure you drain the system before temperatures dip to 30 degrees Fahrenheit. Before you start prepping to winterize your irrigation system, dig out any manual or set of instructions that specifically details your sprinkler system.

When should I winterize my sprinkler system in Colorado Springs?

If you’re new to the area, each year in September and October it’s important to have your sprinklers winterized before the snow sets in, usually around Halloween each year, to prevent costly freeze damage to your sprinkler system.

When should I worry about sprinkler system freezing?

While you may be eager to get your lawn back to its pristine green state, it is important to remember that temperatures of 32 degrees Fahrenheit or lower put your sprinkler system at risk of freezing.

When should I winterize my lawn in Colorado?

Fall is the best time of year to fertilize Colorado’s bluegrass lawns. Promotions about “lawn winterization” may sound mysterious, but there’s nothing magical about it. Simply fertilize with nitrogen sometime during late September to early November at lower altitudes, and earlier in the mountains.

When should I turn on my sprinklers?

Agricultural experts tend to agree that watering is best done very early in the morning, starting at or before dawn and concluding around 8 a.m. before air heats for the day. Cool morning hours let water absorb while providing time for the excess to evaporate.

When should you stop watering lawn?

You might be surprised by how late you can mow and water your lawn. Fernandes says to continue watering until the ground freezes, but take care not to overwater. Gradually reduce watering until the average nighttime temperatures are in the low 30s, then stop. Water won’t penetrate once the ground freezes.

When Should sprinklers turn on?

Opening your sprinkler system for the season will depend on the weather conditions and your individual watering needs. As a general rule, the system should not be opened until the threat of frost is passed. If you are an early planter, we recommend waiting to open your system until after April 15.

How do I winterize my sprinkler system in Colorado?

The only way to be completely sure that the water is completely expelled from your irrigation in Colorado is to use compressed air to “blow” the water out. Different compressors are needed for different systems, and it is important that you know the gallons per minute (GPM) that flow through each zone of your system.

When should I winterize Denver?

October is generally when ‘blowout season’ begins.

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