When to Plant Squash in Mississippi
Published: April 21, 2026
Mississippi gardeners in Zone 8a enjoy an extended 41-week growing season for squash. Warm-climate gardeners can grow two squash crops — a spring planting and a fall planting — with summer heat as the main challenge to work around. This guide gives exact dates for Mississippi based on your local frost calendar.
Squash Planting Dates for Mississippi
| Start seeds indoors | January 25–February 1 |
| Last frost (average) | February 15 |
| Transplant outdoors | February 22–March 4 |
| Direct sow outdoors | February 22–March 4 |
| Expect first harvest | April 8 – April 28 |
| Fall crop start | September 22–October 2 |
| Fall harvest | November 6 |
| First fall frost (average) | December 1 |
Dates above assume Zone 8a, the most common zone in Mississippi. Gardeners in cooler Jackson (Zone 8a) plant 1–2 weeks later; warmer Gulfport (Zone 8b) can plant 1–2 weeks earlier.
Growing Squash in Mississippi's Climate
Mississippi's warm Zone 8a climate gives squash more than enough heat — in fact, peak summer heat (95°F+) can shut down fruit set entirely. The solution most Mississippi gardeners use is a two-season approach: a spring crop planted early, a harvest break during peak summer, and a fall crop planted July through August for October and November harvest.
Variety selection matters more in warm climates than most gardeners realize. Choose heat-tolerant varieties bred for Mississippi-like conditions — local extension offices and nurseries stock these specifically. Afternoon shade cloth during July and August can be the difference between a working fall crop and total flower drop.
Common squash pests to watch for in Mississippi include Squash Vine Borer and Squash Bug. The first line of defense is companion planting: Corn and Bush Beans planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Squash Garden Calendar for Mississippi
| Month | Task | Notes |
|---|---|---|
| January | Start seeds indoors | Use grow lights; warm soil to 70–75°F for best germination |
| February | Transplant outdoors | Soil temp must be 65°F+; nighttime lows above 50°F |
| March | — | Off-season |
| April | First harvest window opens | Squash begins producing 45–65 days after transplant |
| May ← | — | Off-season |
| June | Peak growth; water 1 inch/week | Monitor for pests daily; stake or support as needed |
| July | Start fall crop seeds | Fall transplants go in 10 weeks before first frost |
| August | — | Off-season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Off-season |
| November | — | Off-season |
| December | First frost approaches | Harvest remaining squash; cover plants on frost nights |
Squash Growing Tips for Mississippi Gardeners
- •Plant only after soil is fully warm (65°F+) — cold soil rots seeds and creates disease-prone seedlings.
- •Squash vine borer kills plants from the inside in July–August in the eastern US; plant a backup crop in early July.
- •Mississippi's summer heat shuts down squash flowering at 95°F+. Choose heat-tolerant varieties and use shade cloth from mid-June through August to preserve fruit set.
- •Mississippi's fall crop is often more productive than spring — plant transplants in July after the worst heat, for October and November harvest as temperatures cool.
- •Hand-pollinate using a small brush if fruit falls off small — squash need bee visits for fruit set.
Companion Planting for Squash in Mississippi
In Mississippi's warm climate, planting squash with Corn and Bush Beans helps deter pests and improve soil. Avoid planting near Potato and Fennel, which inhibit squash growth through root chemistry or shared pest pressure. See the full squash companion planting guide for the complete list.
Squash Planting Dates by City in Mississippi
Top cities in Mississippi — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant squash in Mississippi?
In Mississippi (Zone 8a), start squash seeds indoors around January 25–February 1 and transplant outdoors around February 22–March 4 — 1 weeks after the state's average last frost of February 15.
What is the last frost date in Mississippi?
Mississippi's average last frost date is February 15 in the state's most common Zone 8a. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow squash year-round in Mississippi?
Not year-round — Mississippi's cold season stops squash production. The squash season runs February 15 to December 1, roughly 41 weeks. A fall crop extends harvest into late autumn.
What squash varieties grow best in Mississippi?
For Mississippi's Zone 8a, Yellow Crookneck and Tromboncino tolerate heat and humidity well.
When do I start squash seeds indoors in Mississippi?
Start squash seeds indoors in Mississippi around January 25–February 1, which is 3 weeks before the state's average last frost of February 15. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.