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When to Plant Amaranth in Gloucester County, VA

Gloucester County, Virginia Zone 8a May

This month in Gloucester County, Virginia

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Gloucester County, Virginia.

Avg. last frost April 1
Avg. first frost November 4
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 14 hrs
  1. Time to start amaranth inside

    Label every cell. You will absolutely forget which is which otherwise.

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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.

Gloucester County, Virginia is in USDA Zone 8a. The average last spring frost is April 1 and the first fall frost is November 4, giving you a growing season of approximately 217 days.

At an elevation of 817 feet, Gloucester County receives approximately 52.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Amaranth during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Amaranth root diseases.

Gloucester County, VA (Zone 8a) Long season
217 days
Last Spring Frost April 1
217 growing days
First Fall Frost November 4

Gloucester County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (68 days to spare)
Start indoors: Feb 3 Transplant: Apr 7 🍅 Harvest: Jul 7 – Aug 25
Recommended (50%) ✓ Fits season (63 days to spare)
Start indoors: Feb 11 Transplant: Apr 15 🍅 Harvest: Jul 15 – Sep 2
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Aug 1 – Sep 19

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 Gloucester County

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

Soil pH

Your soil pH (5.4–6.5) is more acidic than Amaranth prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). 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
Watering frequency Natural rainfall sufficient
Season total 0 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 4.3" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 5.6" 0" ❄️ Dormant
Apr 4.3" 3.5" 0.8" 💧 Light watering
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.4" 0" ✅ Rainfall sufficient
Sep 4.3" 4" 0.3" 💧 Light watering
Oct 4.3" 3.5" 0.8" 💧 Light watering
Nov 4.3" 3.8" 0.5" 💧 Light watering
Dec 4" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Gloucester 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 ~1,916 GDD — county provides 3,960 GDD Excellent fit

Amaranth Planting Timeline — Gloucester County, VA

Amaranth Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors April 15 Apr 15 – Apr 29
Direct Sow April 8 Apr 8 – Apr 29
Harvest July 15 Jul 15 – Sep 2

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8a

📆 Growing Season

217 days in Gloucester County

Growing Tips for Amaranth in Gloucester County

Direct sow Amaranth outdoors after April 01 in Gloucester County when soil has warmed and frost danger has passed.

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 Gloucester County, VA?

Gloucester County is in Zone 8a with an average last frost of April 1. Plan your Amaranth planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gloucester County, VA?

Gloucester County, Virginia is in USDA Hardiness Zone 8a. The average last spring frost is April 1 and first fall frost is November 4.

🌱

Your Gloucester County Garden Planner — Free

A 24-page printable planner built for Gloucester County (Zone 8a). 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 Gloucester County, VA. 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.