Q.Frost Dates & Planting Timing
How do I use frost probability tables for planting decisions?
A.
Pick a risk tier based on the value of your crop and the protection available. High-value frost-sensitive transplants without protection: use the conservative bound (9-of-10 years frost-free). Direct-seed warm-season crops: use the median. With row cover or season-extension tools: use the aggressive bound.
Frost-date pages on every county show all five risk tiers. Pair with state crop calendars for crop-specific windows.