Garrison, TX 75946 Frost Dates
When can you plant in Garrison, TX?
The last spring frost here typically falls around 03/18, about 202 days from today. The first fall frost typically arrives around 11/13, about 240 frost-free days later.
The USDA Plant Hardiness Zone Map puts Garrison in Zone 8b (15 to 20°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 11 weeks of growing season left in Garrison before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/18 isn't a guarantee
03/18 is the middle of 30 years of NOAA records, not a promise. Plant by 02/26 and you're betting against frost in roughly 9 years out of 10. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Garrison compares
At roughly 240 frost-free days, Garrison places 8,711 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,939 of 2,558.
Learn more
local microclimates covers what one yard in Garrison can differ from the 75946 normal. zone vs. frost date covers why Zone 8b and Garrison's frost date answer different questions.