Soil Temp & Moisture Details

Temp °F Temperature Status Moisture cb Soil Status
< 20   Winter Kill Possible   0-10   Saturated Soil  
< 33   Soil Frozen   11-25   Adequately Wet  
33-40   Lawn Growth Ceased   26-60   Irrigation Desired  
41-50   Root Growth Only   61-100   Irrigation Needed  
51-65   Optimal Root Growth   100+   Dangerously Dry  
66-75   Optimal Shoot Growth      
76-90   Shoot Growth Only      
90+   Lawn Growth Ceased