Louisiana · zones 8b–9b
When to plant zucchini in Louisiana.
Sow between Mar 7 to Jun 20 in a typical year, keyed to Louisiana's median last frost around Feb 28. A second, fall sowing fits Aug 17 to Sep 5. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Zucchini dates for a typical Louisiana season.
Direct sow
Mar 7 to Jun 20
Keyed to the ~Feb 28 last frost. Sow 1" deep, 24" apart.
Fall round
Aug 17 to Sep 5
Counted back from the ~Dec 1 first frost.
Harvest
~50 days later
~8 lb per plant over ~5 weeks.
Louisiana spans more than one climate: Zone 9 is the most common zone, but the state runs 8b to 9b. That's why the planner works from your ZIP code's frost dates, not your zone: mountain and coastal gardens in the same state can be three weeks apart.
In Louisiana: watch for
The pests that find zucchini here.
With about 276 frost-free days, squash, summer spends longer in the ground here than in most of the country, which widens the window in which squash bugs can find it. Scout weekly from midseason and act on the first signs.
Gray shield bugs; leaves wilt and get crispy patches.
Organic fix: Lay a board out overnight and collect them at dawn; scrape bronze egg clusters off leaf undersides.
Sudden wilt with sawdust-like frass at the stem base.
Organic fix: Cover young plants; slit the stem to remove the grub, or inject Bt.
Yellow striped or spotted beetles chewing leaves and blossoms.
Organic fix: Row cover until the first female flowers open, then hand-pick.
White powder coating the leaves late in the season.
Organic fix: Space for airflow, water the soil rather than the leaves, use resistant varieties.
Your season math: Louisiana gives zucchini about 276 frost-free days, and it needs roughly 50 days to a first harvest. That fits about 8 re-sown rounds across the season, so you can keep it coming instead of picking once.
Planting zucchini in Louisiana: questions
When should I plant zucchini in Louisiana?+
In a typical Louisiana year, sow zucchini between Mar 7 to Jun 20, keyed to the state's median last frost around Feb 28. There's also a fall window: Aug 17 to Sep 5. Your exact dates shift with your ZIP code and microclimate.
What USDA zone is Louisiana?+
Louisiana spans zones 8b–9b, mostly zone 9. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many zucchini plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.