Ulmer, SC 29849 Frost Dates
29849, near Ulmer, SC: the frost window
Around 03/20 is the usual last spring frost, about 204 days away. Fall's first freeze usually shows up around 11/13, roughly 238 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Ulmer in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Ulmer's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/20 isn't a guarantee
03/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/08 and only about 1 year in 10 sees frost after that.
Ulmer against the rest of the dataset
Ulmer's growing season runs about 238 days, ranking 9,062 of 40,283 US ZIP codes measured here, longest to shortest. Within SC, it ranks 242 of 519.
Learn more
Two guides worth reading on 29849: local microclimates, on what one yard in Ulmer can differ from the 29849 normal, and zone vs. frost date, on why Zone 8b and Ulmer's frost date answer different questions.