When to plant swiss chard in Saint Paul

Swiss chard is cold-hardy, so every date keys off Saint Paul's frost dates of Apr 22.
Step 1 · Sow
Start seeds indoors
Mar 25 – Apr 15
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 20 – May 11
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jun 9 – Jun 19
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Jul 13 – Jul 27
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Sep 8 – Sep 18
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Saint Paul's 174-day season leaves this much room.
Swiss chard on Saint Paul'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
APR 22
OCT 12

Common questions

When can I sow swiss chard outdoors in Saint Paul?

Direct-sow around mid April (Apr 20–May 11) in Saint Paul, based on its local frost dates. Confidence 81%.

When will swiss chard be ready to harvest in Saint Paul?

Expect to harvest from around early June (Jun 9–Jun 19) in Saint Paul, based on its local frost dates. Confidence 76%.

When should I start swiss chard seeds indoors in Saint Paul?

Start seeds indoors around late March (Mar 25–Apr 15) in Saint Paul, based on its local frost dates. Confidence 80%.

When can I transplant swiss chard outdoors in Saint Paul?

Transplant outdoors around mid April (Apr 20–May 11) in Saint Paul, based on its local frost dates. Confidence 81%.

Can I plant swiss chard in autumn in Saint Paul?

Yes — Saint Paul supports a second, autumn sowing of swiss chard around mid July (Jul 13–Jul 27), timed to mature before the first fall frost.

How long is the growing season in Saint Paul?

Saint Paul has roughly 174 frost-free days, which is enough time to grow swiss chard to maturity outdoors.

The rule of thumb

Sow swiss chard 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 Saint Paul's frost dates.

Confidence 84/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.