When to plant peas in Philadelphia
Peas is cold-hardy, so every date keys off Philadelphia's frost dates of Mar 28.
Step 1 · Sow
Direct sow outdoors
Mar 3 – Mar 24
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Apr 27 – May 12
Picking runs until conditions turn against the crop.
Step 3 · Second sowing
Autumn / second sowing
Aug 23 – Sep 6
A second window for a fall crop, timed to mature before the first frost.
Step 4 · Second harvest
Autumn crop harvest
Oct 24 – Nov 8
Maturity window for the second sowing.
Window
Days to maturity
55 – 70 d
Philadelphia's 234-day season leaves this much room.
Peas on Philadelphia'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 28
NOV 22
Common questions
When can I sow peas outdoors in Philadelphia?
Direct-sow around early March (Mar 3–Mar 24) in Philadelphia, based on its local frost dates. Confidence 84%.
When will peas be ready to harvest in Philadelphia?
Expect to harvest from around late April (Apr 27–May 12) in Philadelphia, based on its local frost dates. Confidence 78%.
Can I plant peas in autumn in Philadelphia?
Yes — Philadelphia supports a second, autumn sowing of peas around late August (Aug 23–Sep 6), timed to mature before the first fall frost.
How long is the growing season in Philadelphia?
Philadelphia has roughly 234 frost-free days, which is enough time to grow peas to maturity outdoors.
The rule of thumb
Sow peas 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 Philadelphia's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.