When to plant broccoli in Columbus
Broccoli is cold-hardy, so every date keys off Columbus's frost dates of Apr 16.
Step 1 · Sow
Start seeds indoors
Mar 5 – Mar 26
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 2 – Apr 23
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 1 – Jun 26
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 11 – Jul 25
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 16 – Oct 11
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Columbus's 188-day season leaves this much room.
Broccoli on Columbus'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
APR 16
OCT 25
Common questions
When will broccoli be ready to harvest in Columbus?
Expect to harvest from around early June (Jun 1–Jun 26) in Columbus, based on its local frost dates. Confidence 80%.
When should I start broccoli seeds indoors in Columbus?
Start seeds indoors around early March (Mar 5–Mar 26) in Columbus, based on its local frost dates. Confidence 85%.
When can I transplant broccoli outdoors in Columbus?
Transplant outdoors around early April (Apr 2–Apr 23) in Columbus, based on its local frost dates. Confidence 89%.
Can I plant broccoli in autumn in Columbus?
Yes — Columbus supports a second, autumn sowing of broccoli around mid July (Jul 11–Jul 25), timed to mature before the first fall frost.
How long is the growing season in Columbus?
Columbus has roughly 188 frost-free days, which is enough time to grow broccoli to maturity outdoors.
The rule of thumb
Sow broccoli 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 Columbus's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.