Know when to plant.

Every place tells you whether its dates come from a nearby weather station or a climate model — and how far the station is.

A single score from record length, station distance and year-to-year variance — so you know how much to trust each date.

The frost date we headline is the safe date — frost is unlikely past it (about 1 year in 10). We show the typical (median) date alongside, and cold-hardy crops can go earlier. Your microclimate can still shift things a week or two, and we say so.