When to plant tomato in Anchorage
Tomato is frost-tender, so every date keys off Anchorage's last spring frost of Apr 30.
Step 1 · Sow
Start seeds indoors
Mar 27 – Apr 17
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jul 13 – Aug 3
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 11 – Oct 6
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 85 d
Anchorage's 148-day season leaves this much room.
Tomato on Anchorage'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 30
SEP 26
Common questions
When will tomato be ready to harvest in Anchorage?
Expect to harvest from around mid September (Sep 11–Oct 6) in Anchorage, based on its local frost dates. Confidence 76%.
When should I start tomato seeds indoors in Anchorage?
Start seeds indoors around late March (Mar 27–Apr 17) in Anchorage, based on its local frost dates. Confidence 81%.
When can I transplant tomato outdoors in Anchorage?
Transplant outdoors around mid July (Jul 13–Aug 3) in Anchorage, based on its local frost dates. Confidence 82%.
How long is the growing season in Anchorage?
Anchorage has roughly 148 frost-free days, which is enough time to grow tomato to maturity outdoors.
The rule of thumb
Sow tomato 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Anchorage's frost dates.
Confidence 85/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.