Garrett Park, MD 20852 Frost Dates
When can you plant in Garrett Park, MD?
The last spring frost here typically falls around 04/01, about 216 days from today. The first fall frost typically arrives around 11/06, about 219 frost-free days later.
The USDA Plant Hardiness Zone Map puts Garrett Park 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 Garrett Park 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
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Garrett Park compares
At roughly 219 frost-free days, Garrett Park places 13,070 of 40,283 ZIP codes in this dataset. Within MD, it ranks 230 of 583.
Learn more
local microclimates covers what one yard in Garrett Park can differ from the 20852 normal. zone vs. frost date covers why Zone 7b and Garrett Park's frost date answer different questions.