When to Start Winterizing Your Sprinklers and Lawn

When to Start Winterizing Your Sprinklers and Lawn admin September 24, 2020

When to Start Winterizing Your Sprinklers and Lawn

In Colorado the weather can be variable, especially when fall hits, so it can be hard to tell when you should start preparing for winter. Some years we have warm weather until Thanksgiving. Other years we start seeing snow in September.

When to start getting the lawn ready for winter

We start doing fall winterization services for the lawn at the end of September and throughout October. Along with watering the lawn as long as possible, the services that will most benefit the lawn so it can come back strong in the spring are fertilization and aeration. For fertilization we would recommend Synergy with corn gluten meal, which is a pre-emergent weed control and fertilizer. Synergy works best as a pre-emergent when put down in the fall and again in early March. Synergy is a 100% organic fertilizer that will feed the lawn through the winter and will help keep weed seeds from germinating. Synergy is best paired with an aeration to work it down into the soil more quickly. Aeration will allow nutrients and water to penetrate deep into the root zone and avoid soil compaction. Because Colorado has such a high clay content in the soil, we recommend to aerate twice a year. Once in spring and once in fall. Aeration is also beneficial if you have a lot of foot traffic on the lawn.

When is a good time to turn off the sprinklers for the season?

It’s a good idea to water the lawn for as long as the weather permits. We generally recommend blowing your sprinklers out in mid-late October. Your backflow preventer or vacuum breaker, otherwise known as the PVB, BVP, and many other names, is the most fragile part of your system when cold weather hits. As long as you are able to drain your backflow preventer before a sudden freeze, you are safe to be able to keep your sprinkler system on later into the season. If installed properly, the underground lines are more insulated by the ground and will not be vulnerable until much later into the season, when the ground freeze several inches down. We suggest to have everything blown out before winter but the lines are typically safe for short, early freezes. Below is a step-by-step video for how to drain your BVP and basement pipe.