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When to Plant Amaranth in Orleans Parish, LA

Amaranth is an ancient grain crop with edible leaves and seeds, rich in protein and micronutrients. It thrives in warm conditions and is drought-tolerant once established.

Orleans Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 20 and the first fall frost is November 23, giving you a growing season of approximately 276 days.

At an elevation of 489 feet, Orleans Parish receives approximately 50.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 101ยฐF, so Amaranth may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Amaranth will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Amaranth root diseases.

Orleans Parish, LA (Zone 9a) Year-round
276 days
Last Spring Frost February 20
276 growing days
First Fall Frost November 23

Orleans Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (142 days to spare)
Start indoors: Dec 19 Transplant: Feb 6 🍅 Harvest: May 8 – Jun 26
Recommended (50%) ✓ Fits season (129 days to spare)
Start indoors: Jan 9 Transplant: Feb 27 🍅 Harvest: May 29 – Jul 17
Safe Start (90%) ✓ Fits season (116 days to spare)
Start indoors: Feb 16 Transplant: Apr 6 🍅 Harvest: Jul 6 – Aug 24

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
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Amaranth needs ~2,704 GDD — county provides 7,132 GDD Excellent fit

Amaranth Planting Timeline โ€” Orleans Parish, LA

Amaranth Planting Calendar

Activity When Date Range
Start Indoors January 9 Jan 9 โ€“ Jan 23
Transplant Outdoors February 27 Feb 27 โ€“ Mar 13
Direct Sow February 20 Feb 20 โ€“ Mar 13
Harvest May 29 May 29 โ€“ Jul 17

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

90โ€“120 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 9a

Growing Season

276 days

Growing Tips for Orleans Parish

Direct sow after last frost when soil is warm. Thin seedlings to 18 inches apart. Harvest leaves when young and tender; harvest seeds when flower heads begin to dry.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Amaranth in Orleans Parish, LA?

Orleans Parish is in Zone 9a with an average last frost of February 20. Plan your Amaranth planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Orleans Parish, LA?

Orleans Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 20 and first fall frost is November 23.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Orleans Parish gardeners in Zone 9a 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 Orleans Parish, LA. Local conditions may vary. Last updated: April 2026.