PatchFree tool
Soil temperature tracker by ZIP
Current soil temperature at surface, 2″, and 6″ depth with a 7-day trend. Use it to time crabgrass pre-emergent, warm-season green-up, and PGR applications.
How to use soil temperature
- Crabgrass pre-emergent: apply before 2″ soil temperature sustains 55°F for 3+ days.
- Warm-season green-up: bermuda and zoysia begin greening when 4–6″ soil temperature holds above 65°F.
- Poa annua pre-emergent: apply in fall when soil drops through 70°F.
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