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When to Plant Chayote in St. Helena Parish, LA

Chayote is a tropical vine producing pear-shaped, mild-flavored squash. The entire plant is edible including the fruit, shoots, leaves, and tuberous root.

St. Helena Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 30, giving you a growing season of approximately 270 days.

At an elevation of 437 feet, St. Helena Parish receives approximately 50 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96ยฐF, so Chayote may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Chayote will need more frequent watering and organic matter to retain nutrients.

St. Helena Parish, LA (Zone 8b) Year-round
270 days
Last Spring Frost March 5
270 growing days
First Fall Frost November 30

St. Helena Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (68 days to spare)
Start indoors: Dec 28 Transplant: Mar 1 🍅 Harvest: Jul 5 – Sep 13
Recommended (50%) ✓ Fits season (60 days to spare)
Start indoors: Jan 15 Transplant: Mar 19 🍅 Harvest: Jul 23 – Oct 1
Safe Start (90%) ✓ Fits season (54 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🍅 Harvest: Aug 13 – Oct 22

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 534 gal / 100 sq ft
Chayote needs ~3,300 GDD — county provides 5,940 GDD Excellent fit

Chayote Planting Timeline โ€” St. Helena Parish, LA

Chayote Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 โ€“ Jan 29
Transplant Outdoors March 19 Mar 19 โ€“ Apr 2
Direct Sow March 12 Mar 12 โ€“ Apr 2
Harvest July 23 Jul 23 โ€“ Oct 1

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February โ€”
March Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May โ€”
June โ€”
July Harvest
August Harvest
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

120โ€“180 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8b

Growing Season

270 days

Growing Tips for St. Helena Parish

Plant the whole fruit at a 45-degree angle with the stem end exposed. Provide a very sturdy trellis. One vine can produce 60-80 fruits. Harvest when fruits are young and tender.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Chayote in St. Helena Parish, LA?

St. Helena Parish is in Zone 8b with an average last frost of March 5. Plan your Chayote planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is St. Helena Parish, LA?

St. Helena Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 30.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help St. Helena Parish gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for St. Helena Parish, LA. Local conditions may vary. Last updated: April 2026.