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When to Plant Amaranth in Duplin County, NC

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.

Duplin County, North Carolina is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 8, giving you a growing season of approximately 230 days.

At an elevation of 829 feet, Duplin County receives approximately 45.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96Β°F, so Amaranth may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Amaranth, but amend with compost to improve drainage and prevent root rot.

Duplin County, NC (Zone 8a) Long season
230 days
Last Spring Frost March 23
230 growing days
First Fall Frost November 8

Duplin County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Monthly Watering Guide for Amaranth

Amaranth needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Amaranth Needs Rainfall You Supplement Action
Jan β€” 3.6" 0" ❄️ Dormant
Feb β€” 3.3" 0" ❄️ Dormant
Mar 4.3" 4" 0.3" πŸ’§ Light watering
Apr 4.3" 3.5" 0.8" πŸ’§ Light watering
May 4.3" 3.8" 0.5" πŸ’§ Light watering
Jun 4.3" 4" 0.3" πŸ’§ Light watering
Jul 4.3" 4.7" 0" βœ… Rainfall sufficient
Aug 4.3" 5.2" 0" βœ… Rainfall sufficient
Sep 4.3" 3.1" 1.2" πŸ’§ Light watering
Oct 4.3" 3.1" 1.2" πŸ’§ Light watering
Nov 4.3" 3.2" 1.1" πŸ’§ Light watering
Dec β€” 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Duplin County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Amaranth Planting Timeline β€” Duplin County, NC

Amaranth Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 – Feb 16
Transplant Outdoors April 6 Apr 6 – Apr 20
Direct Sow March 30 Mar 30 – Apr 20
Harvest July 6 Jul 6 – Aug 24

Plant 1" deep Β· 15" apart Β· Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

90–120 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8a

πŸ“† Growing Season

230 days in Duplin County

Growing Tips for Duplin County

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Amaranth in Duplin County, NC?

Duplin County is in Zone 8a with an average last frost of March 23. Plan your Amaranth planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Duplin County, NC?

Duplin County, North Carolina is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 8.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Duplin County gardeners in Zone 8a 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 Duplin County, NC. Local conditions may vary. Last updated: April 2026.