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When to plant Amaranth in Coffey County County,

For Amaranth in Coffey County County, the safe spring window opens around April 18 and closes around May 9. Last expected frost is April 11, first fall frost October 24, giving a 196-day growing season.

When to Plant Amaranth in Coffey County, KS

Coffey County, Kansas Zone 6b June

This month in Coffey County, Kansas

We've pulled the most time-sensitive tasks for Coffey County, Kansas this June and put them front and centre. Tackle them in order.

Avg. last frost April 11
Avg. first frost October 24
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 14.6 hrs
  1. Sow amaranth in trays indoors

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

To set up a strong July, finish these tasks
  • 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.

Coffey County, Kansas is in USDA Zone 6b. The average last spring frost is April 11 and the first fall frost is October 24, giving you a growing season of approximately 196 days.

At an elevation of 466 feet, Coffey County receives approximately 27.7 inches of rainfall annually with predominantly loam soil. Summer highs average 87°F, providing good warmth for Amaranth during the growing season.

Coffey County, KS (Zone 6b) Moderate season
196 days
Last Spring Frost April 11
196 growing days
First Fall Frost October 24
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Coffey County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Amaranth Planting Risk Windows

Early Start (70% safe) ✓ Fits season (41 days to spare)
Start indoors: Feb 8 Transplant: Apr 19 🍅 Harvest: Jul 19 – Sep 6
Recommended (50%) ✓ Fits season (42 days to spare)
Start indoors: Feb 14 Transplant: Apr 25 🍅 Harvest: Jul 25 – Sep 12
Safe Start (90%) ✓ Fits season (47 days to spare)
Start indoors: Feb 25 Transplant: May 6 🍅 Harvest: Aug 5 – Sep 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.

Soil Compatibility in Coffey County

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

Soil pH

Your soil pH (6.5–7.7) overlaps with Amaranth's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Amaranth.

How to Plant Amaranth

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

Amaranth Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 851 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 0.7" 0" ❄️ Dormant
Feb 0.9" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 4.3" 3.1" 1.2" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 3.9" 0.4" 💧 Light watering
Jul 4.3" 3.4" 0.9" 💧 Light watering
Aug 4.3" 3.5" 0.8" 💧 Light watering
Sep 4.3" 2.9" 1.4" 💧 Light watering
Oct 4.3" 1.6" 2.7" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Coffey 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 ~1,601 GDD — county provides 2,989 GDD Excellent fit

Amaranth Planting Timeline — Coffey County, KS

Amaranth Planting Calendar

Activity When Date Range
Start Indoors February 14 Feb 14 – Feb 28
Transplant Outdoors April 25 Apr 25 – May 9
Direct Sow April 18 Apr 18 – May 9
Harvest July 25 Jul 25 – Sep 12

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

196 days in Coffey County

Growing Tips for Amaranth in Coffey County

Direct sow Amaranth outdoors after April 11 in Coffey 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 Coffey County, KS?

Coffey County is in Zone 6b with an average last frost of April 11. Plan your Amaranth planting based on this frost date — see the calendar above for exact timing.

What planting zone is Coffey County, KS?

Coffey County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 11 and first fall frost is October 24.

When should I plant Amaranth in Coffey County County, ?

In Coffey County County, , plant Amaranth after the last frost (around April 11) and before the first frost (around October 24). Best results when soil holds above 50°F.

What growing zone is Coffey County County, for Amaranth?

Coffey County County sits in USDA Zone 6b. Amaranth grows reliably in zones 2a through 11b, so it's a good fit here.

Can Amaranth grow in Coffey County County's climate?

Yes — Amaranth grows well in Coffey County County's temperate climate. Coffey County County averages a 196-day frost-free season, with last frost around April 11 and first frost around October 24.

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Your Coffey County Garden Planner — Free

A 22-page printable planner built for Coffey County (Zone 6b). 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 Coffey County, KS. Local conditions may vary. Last updated: June 2026.

Sources & credits

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