When to plant broccoli in Fremont
Broccoli is cold-hardy, so every date keys off Fremont's frost dates of Feb 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
Feb 11 – Mar 4
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Apr 12 – May 7
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 15 – Aug 29
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 21 – Nov 15
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Fremont's 277-day season leaves this much room.
Broccoli on Fremont'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
FEB 25
NOV 29
Common questions
When will broccoli be ready to harvest in Fremont?
Expect to harvest from around mid April (Apr 12–May 7) in Fremont, based on its local frost dates. Confidence 72%.
When should I start broccoli seeds indoors in Fremont?
Start seeds indoors around mid January (Jan 14–Feb 4) in Fremont, based on its local frost dates. Confidence 76%.
When can I transplant broccoli outdoors in Fremont?
Transplant outdoors around mid February (Feb 11–Mar 4) in Fremont, based on its local frost dates. Confidence 80%.
Can I plant broccoli in autumn in Fremont?
Yes — Fremont supports a second, autumn sowing of broccoli around mid August (Aug 15–Aug 29), timed to mature before the first fall frost.
How long is the growing season in Fremont?
Fremont has roughly 277 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 Fremont's frost dates.
Confidence 80/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.