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When to Plant Amaranth in Lincoln County, WY

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.

Lincoln County, Wyoming is in USDA Zone 4b. The average last spring frost is June 7 and the first fall frost is September 13, giving you a growing season of approximately 98 days.

At an elevation of 6,850 feet, Lincoln County receives approximately 17.6 inches of rainfall annually with predominantly loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Amaranth to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Amaranth successfully. Mulch heavily to conserve soil moisture.

Lincoln County, WY (Zone 4b) Very short season
98 days
Last Spring Frost June 7
98 growing days
First Fall Frost September 13

Lincoln County Soil Profile

Soil Type

Loam

Soil pH

6.7-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 20 Transplant: Jun 12 🍅 Harvest: Sep 11 – Oct 30
Recommended (50%) ✗ May not fit
Start indoors: Apr 5 Transplant: Jun 28 🍅 Harvest: Sep 27 – Nov 15
Safe Start (90%) ✗ May not fit
Start indoors: Apr 19 Transplant: Jul 12 🍅 Harvest: Oct 11 – Nov 29

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
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 571 gal / 100 sq ft
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Amaranth needs ~1,365 GDD — county provides 1,274 GDD Tight fit

Amaranth Planting Timeline โ€” Lincoln County, WY

Amaranth Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 โ€“ Apr 19
Transplant Outdoors June 28 Jun 28 โ€“ Jul 12
Direct Sow June 21 Jun 21 โ€“ Jul 12
Harvest September 27 Sep 27 โ€“ Nov 15

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Start Indoors
May โ€”
June Transplant Outdoors Direct Sow
July Transplant Outdoors Direct Sow
August โ€”
September Harvest
October Harvest
November Harvest
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 4b

Growing Season

98 days

Growing Tips for Lincoln 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 Lincoln County, WY?

Lincoln County is in Zone 4b with an average last frost of June 7. Plan your Amaranth planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lincoln County, WY?

Lincoln County, Wyoming is in USDA Hardiness Zone 4b. The average last spring frost is June 7 and first fall frost is September 13.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Lincoln County gardeners in Zone 4b 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 Lincoln County, WY. Local conditions may vary. Last updated: April 2026.