Ardencroft, DE 19803 Frost Dates
When can you plant in Ardencroft, DE?
Around 04/07 is the usual last spring frost, about 222 days away. The first fall frost typically arrives around 11/04, about 209 frost-free days later.
The USDA Plant Hardiness Zone Map puts Ardencroft in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 10 weeks of growing season left in Ardencroft before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ardencroft compares
Ardencroft's growing season runs about 209 days, ranking 15,422 of 40,283 US ZIP codes measured here, longest to shortest. Within DE, it ranks 87 of 96.
Learn more
local microclimates covers what one yard in Ardencroft can differ from the 19803 normal. zone vs. frost date covers why Zone 7b and Ardencroft's frost date answer different questions.