Soil temperature is one of the most important factors crop farmers use to guide their planting decisions. The rule of thumb is to wait until the upper 4 inches reach at least 50 degrees Fahrenheit ...

The best time to check the Mesonet current soil temperature for planting is after 10 a.m. and before 1 p.m. Black plastic mulch, clear plastic tunnels or plant protectors like the Wall-O-Water can ...

Optimum soil temperatures for corn germination and plant progress begins at 50 degrees F. Soil temperatures lower than 50 F can cause corn seed to lay dormant, exposing the seed to disease and ...

The Greencast Online Syngenta soil temperature map is an excellent resource to help you make planting decisions. Map Legend Soil temperature map for Tri-Cities region as of April 14, 2025.