When to plant broccoli in Jackson
Broccoli is cold-hardy, so every date keys off Jackson's frost dates of Mar 3.
Step 1 · Sow
Start seeds indoors
Jan 20 – Feb 10
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Feb 17 – Mar 10
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Apr 18 – May 13
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 6 – Aug 20
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 12 – Nov 6
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Jackson's 267-day season leaves this much room.
Broccoli on Jackson'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 3
NOV 20
Common questions
When will broccoli be ready to harvest in Jackson?
Expect to harvest from around mid April (Apr 18–May 13) in Jackson, based on its local frost dates. Confidence 74%.
When should I start broccoli seeds indoors in Jackson?
Start seeds indoors around mid January (Jan 20–Feb 10) in Jackson, based on its local frost dates. Confidence 78%.
When can I transplant broccoli outdoors in Jackson?
Transplant outdoors around mid February (Feb 17–Mar 10) in Jackson, based on its local frost dates. Confidence 82%.
Can I plant broccoli in autumn in Jackson?
Yes — Jackson supports a second, autumn sowing of broccoli around early August (Aug 6–Aug 20), timed to mature before the first fall frost.
How long is the growing season in Jackson?
Jackson has roughly 267 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 Jackson's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.