Blades, DE 19973 Frost Dates
Blades, DE: when does the frost end?
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/30, roughly 200 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Blades in Zone 7b (5 to 10°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
With roughly 9 weeks until Blades's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Blades against the rest of the dataset
About 200 days separate Blades's last and first frost, putting it 17,839 of 40,283 ZIP codes nationally. Within DE, it ranks 91 of 96.
Learn more
Before leaning on 19973's figures: the frost range explains how to read the range around Blades's dates instead of trusting one, while local microclimates explains what one yard in Blades can differ from the 19973 normal.