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Current planting and watering guide
LocationcbMoistureTemperature °F
soil1119.0
Dangerous Dry
( 101 - 240 cb )
Optimal growth
( 15 - 21 )
63
soil257.0
Irrigation desired
( 26 - 61 cb )
Optimal growth
( 15 - 21 )
61
soil361.0
Irrigation needed
( 61 - 101 cb )
Minimum growth
( 10 - 15 )
56
soil43.0
Saturated
( 0 - 11 cb )
Minimum growth
( 10 - 15 )
54


Explanation
Dangerous Dry
( 101 - 240 cb )
Soil is becoming dangerously dry for maximum production.
Irrigation needed
( 61 - 101 cb )
Usual range to irrigate heavy clay soils
Irrigation desired
( 26 - 61 cb )
Usual range to irrigate or water (except heavy clay soils)
Irrigate at the upper end of this range in cool humid climates and with higher water-holding capacity soils.
Adequate
( 11 - 26 cb )
Soil is adequately wet (except coarse sands which are drying out at this range)
Saturated
( 0 - 11 cb )
Saturated Soil. Occurs for a day or two after irrigation.