When to plant garlic in San Bernardino
Garlic is cold-hardy, so every date keys off San Bernardino's frost dates of Feb 23.
Step 1 · Sow
Direct sow outdoors
Nov 11 – Dec 2
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jul 9 – Jul 9
Picking runs until conditions turn against the crop.
Window
Days to maturity
240 d
San Bernardino's 284-day season leaves this much room.
Garlic on San Bernardino'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
FEB 23
DEC 9
Common questions
When can I sow garlic outdoors in San Bernardino?
Direct-sow around mid November (Nov 11–Dec 2) in San Bernardino, based on its local frost dates. Confidence 78%.
When will garlic be ready to harvest in San Bernardino?
Expect to harvest from around early July (Jul 9–Jul 9) in San Bernardino, based on its local frost dates. Confidence 70%.
How long is the growing season in San Bernardino?
San Bernardino has roughly 284 frost-free days, which is enough time to grow garlic to maturity outdoors.
The rule of thumb
Sow garlic 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 San Bernardino's frost dates.
Confidence 78/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.