Secretary, MD 21664 Frost Dates
When can you plant in Secretary, MD?
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 11/04, about 209 frost-free days later.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Secretary, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Secretary before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/24 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Secretary compares
Secretary's growing season runs about 209 days, ranking 15,376 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 350 of 583.
Learn more
the frost range covers how to read the range around Secretary's dates instead of trusting one. local microclimates covers what one yard in Secretary can differ from the 21664 normal.