Mississippi planting calendar

When to plant swiss chard in Mississippi — sow, transplant & harvest dates

Mississippi is mostly USDA zone 8b (range 7b-9a). Dates below are derived from swiss chard's frost tolerance and Mississippi's frost window — not generic national averages.

Swiss Chard planting timetable for Mississippi

Stage	When in Mississippi	Anchor
Start seeds indoors	late February (February 25)	4 weeks before the last frost (late March)
Transplant outside	mid-March (March 18)	7 days before the last frost (late March)
First harvest (estimate)	mid-May (May 12)	~55 days from transplant

Dates are state-wide averages for the dominant zone. Local microclimates — elevation, urban heat, coastal moderation — can shift the window by 1-2 weeks. Use the frost-date calculator for a date tuned to your town.

Why Mississippi's climate shifts the swiss chard dates

Mississippi's last spring frost averages late March and first fall frost early November, which sets the whole planting clock. Mississippi has a hot, humid, long season with mild winters. The Gulf Coast is nearly frost-free; the north sees a short cold spell. Sow early — swiss chard bolt once daytime temperatures hold above 24 °C, so the earlier they go in, the longer the harvest.

Swiss chard is notably more versatile than spinach — it tolerates both light frost (surviving to about -4 °C) and summer heat up to 32 °C, making it a near-year-round crop in Zones 7–10. Direct-sow or transplant 1 week before the last spring frost; chard seed is actually a multi-germ cluster, so thin to final spacing after germination to prevent overcrowding. Unlike spinach, it does not readily bolt in summer, so a single sowing can be harvested by cutting outer leaves repeatedly for 3–4 months.

Frost-risk note

Don't plant before late March — a hard freeze can still set young plants back. In the northern hill country near Tupelo (zone 7b) the safe date runs a week or two later.

Regional variation within Mississippi

the northern hill country near Tupelo (zone 7b) runs roughly 1-2 weeks behind the state average; the Gulf Coast around Gulfport (zone 9a) can plant 1-2 weeks earlier.

Jackson — USDA zone 8b
Gulfport — USDA zone 9a
Hattiesburg — USDA zone 8b
Tupelo — USDA zone 8a

What else to plant in Mississippi around then

The same early window suits peas, lettuce, spinach, and onion sets.

Quick-grow guide

Sun: Full sun to partial shade.
Soil temperature for germination: 10-29 °C (50-85 °F).
Spacing: 9-12 inches (23-30 cm) between plants.
Days to harvest: ~55 days from planting out.

Frequently asked questions

When is the best time to plant swiss chard in Mississippi?

In Mississippi (mostly USDA zone 8b), sow swiss chard indoors around late February, transplant outdoors mid-March (before the last frost, late March), and harvest from mid-May. Swiss Chard are half-hardy — young plants shrug off a light frost but not a hard freeze, so sowing can start a couple of weeks before the last spring frost.

What USDA zone is Mississippi?

Most of Mississippi sits in USDA hardiness zone 8b, with the state spanning roughly 7b-9a from the northern hill country near Tupelo (zone 7b) to the Gulf Coast around Gulfport (zone 9a). The last spring frost averages late March and the first fall frost early November.

Can you grow swiss chard in Mississippi?

Yes. Mississippi's dominant zone 8b supports swiss chard — the key is timing. Swiss Chard are half-hardy — young plants shrug off a light frost but not a hard freeze, so sowing can start a couple of weeks before the last spring frost.

Does the planting date change across Mississippi?

the northern hill country near Tupelo (zone 7b) runs roughly 1-2 weeks behind the state average; the Gulf Coast around Gulfport (zone 9a) can plant 1-2 weeks earlier.

What else can I plant in Mississippi around the same time?

The same early window suits peas, lettuce, spinach, and onion sets.

Source and methodology

State zone spans from the USDA Plant Hardiness Zone Map (2023); frost-date averages from NOAA Climate Data Online. Hot-state two-season timing cross-checked against the UF/IFAS Florida Gardening Calendar and the University of Arizona Cooperative Extension planting calendar. Curated by the Growli editorial team.