When to plant broccoli in Aurora
Broccoli is cold-hardy, so every date keys off Aurora's frost dates of Apr 21.
Step 1 · Sow
Start seeds indoors
Mar 10 – Mar 31
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 7 – Apr 28
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 6 – Jul 1
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 3 – Jul 17
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 8 – Oct 3
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Aurora's 175-day season leaves this much room.
Broccoli on Aurora'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 21
OCT 17
Common questions
When will broccoli be ready to harvest in Aurora?
Expect to harvest from around early June (Jun 6–Jul 1) in Aurora, based on its local frost dates. Confidence 80%.
When should I start broccoli seeds indoors in Aurora?
Start seeds indoors around early March (Mar 10–Mar 31) in Aurora, based on its local frost dates. Confidence 85%.
When can I transplant broccoli outdoors in Aurora?
Transplant outdoors around early April (Apr 7–Apr 28) in Aurora, based on its local frost dates. Confidence 89%.
Can I plant broccoli in autumn in Aurora?
Yes — Aurora supports a second, autumn sowing of broccoli around early July (Jul 3–Jul 17), timed to mature before the first fall frost.
How long is the growing season in Aurora?
Aurora has roughly 175 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 Aurora's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.