Laytonsville, MD 20872 Frost Dates
When can you plant in Laytonsville, MD?
The last spring frost here typically falls around 04/14, about 229 days from today. The first fall frost typically arrives around 10/29, about 196 frost-free days later.
The USDA Plant Hardiness Zone Map puts Laytonsville 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 9 weeks of growing season left in Laytonsville 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
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laytonsville compares
Laytonsville's growing season runs about 196 days, ranking 19,063 of 40,283 US ZIP codes measured here, longest to shortest. Within MD, it ranks 492 of 583.
Learn more
local microclimates covers what one yard in Laytonsville can differ from the 20872 normal. zone vs. frost date covers why Zone 7b and Laytonsville's frost date answer different questions.