When is the best time to winterize my sprinkler system?
The weather conditions each year will determine the best time to winterize
your sprinkler system. Although most of the system is underground and protected
until the ground freezes, external parts like the backflow preventor and
blow-out port can freeze from cold overnight temperatures. You will want to keep
your system running as long as possible if you have new tree or shrub plantings
or have done a fall seeding. The "safe" period in our area runs between October
15 and November 30. You should winterize as soon as you are sure you no longer
need continual watering.
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