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When to plant swiss chard in Marseille

Swiss chard is cold-hardy, so every date keys off Marseille's frost dates of Feb 22.
Step 1 · Sow
Start seeds indoors
Jan 25 – Feb 15
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Feb 8 – Mar 1
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Mar 30 – Apr 9
Picking runs until conditions turn against the crop.
Step 4 · Second sowing
Autumn / second sowing
Aug 29 – Sep 12
A second window for a fall crop, timed to mature before the first frost.
Step 5 · Second harvest
Autumn crop harvest
Oct 25 – Nov 4
Maturity window for the second sowing.
Window
Days to maturity
50 – 60 d
Marseille's 284-day season leaves this much room.
Swiss chard on Marseille'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
FEB 22
DEC 3

Common questions

When can I sow swiss chard outdoors in Marseille?

Direct-sow around early February (Feb 8–Mar 1) in Marseille, based on its local frost dates. Confidence 88%.

When will swiss chard be ready to harvest in Marseille?

Expect to harvest from around late March (Mar 30–Apr 9) in Marseille, based on its local frost dates. Confidence 79%.

When should I start swiss chard seeds indoors in Marseille?

Start seeds indoors around late January (Jan 25–Feb 15) in Marseille, based on its local frost dates. Confidence 84%.

When can I transplant swiss chard outdoors in Marseille?

Transplant outdoors around early February (Feb 8–Mar 1) in Marseille, based on its local frost dates. Confidence 88%.

Can I plant swiss chard in autumn in Marseille?

Yes — Marseille supports a second, autumn sowing of swiss chard around late August (Aug 29–Sep 12), timed to mature before the first fall frost.

How long is the growing season in Marseille?

Marseille has roughly 284 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 Marseille's frost dates.

Confidence 88/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.
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