It going to Freeze!
I Haven't blown out my sprinklers yet.
What do I do!?!
Quick freezes will not damage the lines buried in the ground. It must be well below freezing for several hours to affect your buried lines. Your backflow preventer (that thing on the side of the house) could be damaged by a quick freeze. No worries if you haven't blown them out or there is no immediate openings, just follow these steps:
1) Shut off the water to your sprinklers in the basement or crawl space.
2) Drain the backflow preventer. Use a flat screwdriver to open the two valves on the backflow preventer. Some water might come out.
3) Insulate. Wrap the back flow preventer with a towel, blanket, coat, comforter, something that will insulate it. Then cover with a trash bag. Remember that a dry coat is warmer than a wet coat, so don't forget to cover it with a trash bag
4) Schedule your blowout service as soon as you can.