Why the 6-8 Week Window Before First Hard Freeze Changes How You Blow Out Sprinkler Lines
https://www.alphabookmarks.win/stop-killing-your-plants-when-a-soil-thermometer-helps-and-when-it-doesn-t
If you wait until the last weekend before the first hard freeze to deal with your irrigation, you're doing it backward. Within 6 to 8 weeks before the expected hard freeze the whole decision-making process around blowing out sprinkler lines shifts