When to plant onion in Fayetteville
Onion is cold-hardy, so every date keys off Fayetteville's frost dates of Mar 25.
Step 1 · Sow
Start seeds indoors
Jan 14 – Feb 4
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Mar 4 – Mar 25
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 2 – Jun 22
Picking runs until conditions turn against the crop.
Window
Days to maturity
90 – 110 d
Fayetteville's 228-day season leaves this much room.
Onion on Fayetteville's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
MAR 25
NOV 8
Common questions
When will onion be ready to harvest in Fayetteville?
Expect to harvest from around early June (Jun 2–Jun 22) in Fayetteville, based on its local frost dates. Confidence 79%.
When should I start onion seeds indoors in Fayetteville?
Start seeds indoors around mid January (Jan 14–Feb 4) in Fayetteville, based on its local frost dates. Confidence 84%.
When can I transplant onion outdoors in Fayetteville?
Transplant outdoors around early March (Mar 4–Mar 25) in Fayetteville, based on its local frost dates. Confidence 88%.
How long is the growing season in Fayetteville?
Fayetteville has roughly 228 frost-free days, which is enough time to grow onion to maturity outdoors.
The rule of thumb
Sow onion as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Fayetteville's frost dates.
Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.