Roselle, NJ 07203 Frost Dates
When can you plant in Roselle, NJ?
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/31, about 202 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 Roselle, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Roselle 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
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Roselle compares
At roughly 202 frost-free days, Roselle places 17,146 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 391 of 906.
Learn more
local microclimates covers what one yard in Roselle can differ from the 07203 normal. zone vs. frost date covers why Zone 7b and Roselle's frost date answer different questions.