When to Plant Zucchini in Louisiana
Published: April 21, 2026
Louisiana gardeners in Zone 8b enjoy an extended 45-week growing season for zucchini. Warm-climate gardeners can grow two zucchini crops — a spring planting and a fall planting — with summer heat as the main challenge to work around. This guide gives exact dates for Louisiana based on your local frost calendar.
Zucchini Planting Dates for Louisiana
| Start seeds indoors | January 11–18 |
| Last frost (average) | February 1 |
| Transplant outdoors | February 8–18 |
| Direct sow outdoors | February 8–18 |
| Expect first harvest | March 25 – April 4 |
| Fall crop start | October 20–30 |
| Fall harvest | December 4 |
| First fall frost (average) | December 15 |
Dates above assume Zone 8b, the most common zone in Louisiana. Gardeners in cooler New Orleans (Zone 8b) plant 1–2 weeks later; warmer Shreveport (Zone 8a) can plant 1–2 weeks earlier.
Growing Zucchini in Louisiana's Climate
Louisiana's warm Zone 8b climate gives zucchini more than enough heat — in fact, peak summer heat (95°F+) can shut down fruit set entirely. The solution most Louisiana 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 Louisiana-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 zucchini pests to watch for in Louisiana 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.
Zucchini Garden Calendar for Louisiana
| 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 | First harvest window opens | Zucchini begins producing 45–55 days after transplant |
| April | — | Off-season |
| 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 8 weeks before first frost |
| August | — | Off-season |
| September | — | Off-season |
| October | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| November | — | Off-season |
| December | First frost approaches | Harvest remaining zucchini; cover plants on frost nights |
Zucchini Growing Tips for Louisiana Gardeners
- •Start with just 1–2 plants — zucchini are so productive that more is rarely needed.
- •Harvest at 6–8 inches for peak flavor; zucchini left on the plant signals it to stop producing.
- •Louisiana's summer heat shuts down zucchini flowering at 95°F+. Choose heat-tolerant varieties and use shade cloth from mid-June through August to preserve fruit set.
- •Louisiana'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.
- •Plant a backup crop in early July to replace any vine borer losses in the eastern US.
Companion Planting for Zucchini in Louisiana
In Louisiana's warm climate, planting zucchini with Corn and Bush Beans helps deter pests and improve soil. Avoid planting near Potato and Fennel, which inhibit zucchini growth through root chemistry or shared pest pressure. See the full zucchini companion planting guide for the complete list.
Zucchini Planting Dates by City in Louisiana
Top cities in Louisiana — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant zucchini in Louisiana?
In Louisiana (Zone 8b), start zucchini seeds indoors around January 11–18 and transplant outdoors around February 8–18 — 1 weeks after the state's average last frost of February 1.
What is the last frost date in Louisiana?
Louisiana's average last frost date is February 1 in the state's most common Zone 8b. 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 zucchini year-round in Louisiana?
Not year-round — Louisiana's cold season stops zucchini production. The zucchini season runs February 1 to December 15, roughly 45 weeks. A fall crop extends harvest into late autumn.
What zucchini varieties grow best in Louisiana?
For Louisiana's Zone 8b, Costata Romanesco and Tromboncino tolerate heat while producing high-quality fruit.
When do I start zucchini seeds indoors in Louisiana?
Start zucchini seeds indoors in Louisiana around January 11–18, which is 3 weeks before the state's average last frost of February 1. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.