When to plant garlic in Baltimore
Garlic is cold-hardy, so every date keys off Baltimore's frost dates of Mar 21.
Step 1 · Sow
Direct sow outdoors
Oct 30 – Nov 20
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Jun 27 – Jun 27
Picking runs until conditions turn against the crop.
Window
Days to maturity
240 d
Baltimore's 249-day season leaves this much room.
Garlic on Baltimore'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 21
NOV 27
Common questions
When can I sow garlic outdoors in Baltimore?
Direct-sow around late October (Oct 30–Nov 20) in Baltimore, based on its local frost dates. Confidence 84%.
When will garlic be ready to harvest in Baltimore?
Expect to harvest from around late June (Jun 27–Jun 27) in Baltimore, based on its local frost dates. Confidence 76%.
How long is the growing season in Baltimore?
Baltimore has roughly 249 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 Baltimore's frost dates.
Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.