Garden Grove, IA 50103 Frost Dates
When can you plant in Garden Grove, IA?
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/08, about 161 frost-free days later.
The USDA Plant Hardiness Zone Map puts Garden Grove in Zone 5b (-15 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 6 weeks of growing season left in Garden Grove before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Garden Grove's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Garden Grove compares
At roughly 161 frost-free days, Garden Grove places 32,177 of 40,283 ZIP codes in this dataset. Within IA, it ranks 754 of 1,042.
Learn more
local microclimates covers what one yard in Garden Grove can differ from the 50103 normal. zone vs. frost date covers why Zone 5b and Garden Grove's frost date answer different questions.