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When to plant Amaranth in Applegate, MI

Amaranth planted in Applegate between May 11 and June 1 matures in 90–120 days — well before the October 17 first frost.

When to Plant Amaranth in Applegate, MI

Sanilac County, Michigan Zone 6a June

This month in Sanilac County, Michigan

A quick June briefing for Sanilac County, Michigan gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 4
Avg. first frost October 17
Soil temp (4") 70°F
Watering Low
Pest pressure High
Daylight 15.2 hrs
  1. Fire up the seed-starting tray: amaranth

    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.

Applegate, Michigan is in USDA Zone 6a. The average last spring frost is May 4 and the first fall frost is October 17, giving you a growing season of approximately 166 days.

At an elevation of 985 feet, Sanilac County receives approximately 37 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Amaranth during the growing season.

Applegate, MI (Zone 6a) Moderate season
166 days
Last Spring Frost May 4
166 growing days
First Fall Frost October 17

Applegate Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7

Drainage

Well Drained

Amaranth Planting Risk Windows

Early Start (70% safe) ✓ Fits season (10 days to spare)
Start indoors: Mar 4 Transplant: May 13 🍅 Harvest: Aug 12 – Sep 30
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Mar 9 Transplant: May 18 🍅 Harvest: Aug 17 – Oct 5
Safe Start (90%) ✓ Fits season (8 days to spare)
Start indoors: Mar 26 Transplant: Jun 4 🍅 Harvest: Sep 3 – Oct 22

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 Applegate

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

Soil pH

Your soil pH (5.7–7.0) overlaps with Amaranth's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (4.0%). 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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 113 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 1.3" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 4.5" 0" ✅ Rainfall sufficient
Aug 4.3" 3.4" 0.9" 💧 Light watering
Sep 4.3" 3.8" 0.5" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Sanilac 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 ~1,522 GDD — county provides 2,407 GDD Excellent fit

Amaranth Planting Timeline — Applegate, MI

Amaranth Planting Calendar

Activity When Date Range
Start Indoors March 9 Mar 9 – Mar 23
Transplant Outdoors May 18 May 18 – Jun 1
Direct Sow May 11 May 11 – Jun 1
Harvest August 17 Aug 17 – Oct 5

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

Month-by-Month Timeline

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

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: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

166 days in Sanilac County

Growing Tips for Amaranth in Applegate

Direct sow Amaranth outdoors after May 04 in Sanilac 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 →

When should I plant Amaranth in Applegate, MI?

In Applegate, MI, plant Amaranth after the last frost (around May 4) and before the first frost (around October 17). Best results when soil holds above 50°F.

What growing zone is Applegate, MI for Amaranth?

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

Can Amaranth grow in Applegate's climate?

Yes — Amaranth grows well in Applegate's temperate climate. Applegate averages a 166-day frost-free season, with last frost around May 4 and first frost around October 17.

🌱

Your Sanilac County Garden Planner — Free

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