Blog

When to Plant Amaranth in Giles County, VA

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.

Giles County, Virginia is in USDA Zone 6b. The average last spring frost is May 6 and the first fall frost is October 11, giving you a growing season of approximately 158 days.

At an elevation of 613 feet, Giles County receives approximately 41.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90ยฐF, providing good warmth for Amaranth during the growing season.

Giles County, VA (Zone 6b) Moderate season
158 days
Last Spring Frost May 6
158 growing days
First Fall Frost October 11

Giles County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (3 days to spare)
Start indoors: Mar 3 Transplant: May 12 🍅 Harvest: Aug 11 – Sep 29
Recommended (50%) ✓ Fits season (4 days to spare)
Start indoors: Mar 11 Transplant: May 20 🍅 Harvest: Aug 19 – Oct 7
Safe Start (90%) ✓ Fits season (2 days to spare)
Start indoors: Mar 27 Transplant: Jun 5 🍅 Harvest: Sep 4 – Oct 23

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Amaranth needs ~1,838 GDD — county provides 2,765 GDD Excellent fit

Amaranth Planting Timeline โ€” Giles County, VA

Amaranth Planting Calendar

Activity When Date Range
Start Indoors March 11 Mar 11 โ€“ Mar 25
Transplant Outdoors May 20 May 20 โ€“ Jun 3
Direct Sow May 13 May 13 โ€“ Jun 3
Harvest August 19 Aug 19 โ€“ Oct 7

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April โ€”
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July โ€”
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

90โ€“120 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 6b

Growing Season

158 days

Growing Tips for Giles 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Amaranth in Giles County, VA?

Giles County is in Zone 6b with an average last frost of May 6. Plan your Amaranth planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Giles County, VA?

Giles County, Virginia is in USDA Hardiness Zone 6b. The average last spring frost is May 6 and first fall frost is October 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Giles County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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