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When to Plant Amaranth in Coahoma County, MS

Coahoma County, Mississippi Zone 8b May

Coahoma County, Mississippi gardeners: here's your May plan

Your Coahoma County, Mississippi garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost March 16
Avg. first frost November 11
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. Start amaranth indoors

    Your window is short. These crops want several weeks of indoor growth before they go outside.

June prep starts now
  • First harvests: amaranth

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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.

Coahoma County, Mississippi is in USDA Zone 8b. The average last spring frost is March 16 and the first fall frost is November 11, giving you a growing season of approximately 240 days.

At an elevation of 490 feet, Coahoma County receives approximately 54.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Amaranth root diseases.

Coahoma County, MS (Zone 8b) Long season
240 days
Last Spring Frost March 16
240 growing days
First Fall Frost November 11
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Coahoma County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (83 days to spare)
Start indoors: Jan 19 Transplant: Mar 23 🍅 Harvest: Jun 22 – Aug 10
Recommended (50%) ✓ Fits season (86 days to spare)
Start indoors: Jan 26 Transplant: Mar 30 🍅 Harvest: Jun 29 – Aug 17
Safe Start (90%) ✓ Fits season (81 days to spare)
Start indoors: Feb 18 Transplant: Apr 22 🍅 Harvest: Jul 22 – Sep 9

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.

Soil Compatibility in Coahoma County

How your county's soil matches Amaranth's growing requirements.

Soil pH

Your soil pH (5.3–6.5) is more acidic than Amaranth prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Coahoma County is excellent for Amaranth — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Amaranth.

How to Plant Amaranth

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 114 gal / 100 sq ft

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 4.1" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" ✅ Rainfall sufficient
Apr 4.3" 4.5" 0" ✅ Rainfall sufficient
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 6.1" 0" ✅ Rainfall sufficient
Aug 4.3" 4.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.2" 0.1" 💧 Light watering
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 4.6" 0" ✅ Rainfall sufficient
Dec 4.4" 0" ❄️ Dormant

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

Amaranth Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Amaranth needs ~2,310 GDD — county provides 5,280 GDD Excellent fit

Amaranth Planting Timeline — Coahoma County, MS

Amaranth Planting Calendar

Activity When Date Range
Start Indoors January 26 Jan 26 – Feb 9
Transplant Outdoors March 30 Mar 30 – Apr 13
Direct Sow March 23 Mar 23 – Apr 13
Harvest June 29 Jun 29 – Aug 17

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

240 days in Coahoma County

Growing Tips for Amaranth in Coahoma County

Direct sow Amaranth outdoors after March 16 in Coahoma County when soil has warmed and frost danger has passed.

With Coahoma County's clay soil (26% clay), work in 3-4 inches of compost before planting Amaranth. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 96°F in Coahoma County, provide afternoon shade for Amaranth and water deeply in the morning.

General growing tips

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 Coahoma County, MS?

Coahoma County is in Zone 8b with an average last frost of March 16. Plan your Amaranth planting based on this frost date — see the calendar above for exact timing.

What planting zone is Coahoma County, MS?

Coahoma County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 16 and first fall frost is November 11.

🌱

Your Coahoma County Garden Planner — Free

A 24-page printable planner built for Coahoma County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Coahoma County, MS. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.