When to plant broccoli in Tacoma
Broccoli is cold-hardy, so every date keys off Tacoma's frost dates of Mar 8.
Step 1 · Sow
Start seeds indoors
Jan 25 – Feb 15
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Dec 26 – Jan 16
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Feb 24 – Mar 21
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 30 – Aug 13
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 5 – Oct 30
Maturity window for the second sowing.
Window
Days to maturity
60 – 85 d
Tacoma's 246-day season leaves this much room.
Broccoli on Tacoma'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 8
NOV 13
Common questions
When will broccoli be ready to harvest in Tacoma?
Expect to harvest from around late February (Feb 24–Mar 21) in Tacoma, based on its local frost dates. Confidence 76%.
When should I start broccoli seeds indoors in Tacoma?
Start seeds indoors around late January (Jan 25–Feb 15) in Tacoma, based on its local frost dates. Confidence 81%.
When can I transplant broccoli outdoors in Tacoma?
Transplant outdoors around late December (Dec 26–Jan 16) in Tacoma, based on its local frost dates. Confidence 82%.
Can I plant broccoli in autumn in Tacoma?
Yes — Tacoma supports a second, autumn sowing of broccoli around late July (Jul 30–Aug 13), timed to mature before the first fall frost.
How long is the growing season in Tacoma?
Tacoma has roughly 246 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 Tacoma's frost dates.
Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.