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When to plant Celosia in Shingleton, MI

In Shingleton, plant Celosia in spring between May 24 and June 14, once soil temps hold above 50°F. Shingleton's last frost averages May 10, so time plantings around the expected last-frost window for best survival. For a fall crop, sow between and — roughly 60–90 days before the first frost on October 16.

When to Plant Celosia in Shingleton, MI

Alger County, Michigan Zone 5a June

June to-do list for Alger County, Michigan

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

Avg. last frost May 10
Avg. first frost October 16
Soil temp (4") 64°F
Watering Low
Pest pressure High
Daylight 15.6 hrs
  1. Start celosia under lights

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

Coming up in July — start thinking about
  • First harvests: celosia

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Celosia (Celosia argentea) encompasses the vivid cockscomb (cristata) and feathery plumed (plumosa) types that explode with color in summer heat. Drought-tolerant and disease-resistant, they thrive in the hottest parts of the season and produce long-lasting blooms both in the garden and as cut or dried flowers. A reliable filler in sunny annual beds.

Shingleton, Michigan is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 16, giving you a growing season of approximately 159 days.

At an elevation of 1,014 feet, Alger County receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Celosia to ensure they mature before fall.

Annual Blooms in Summer Pollinator-friendly Good for cutting
Shingleton, MI (Zone 5a) Moderate season
159 days
Last Spring Frost May 10
159 growing days
First Fall Frost October 16

Shingleton Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7.1

Drainage

Well Drained

Celosia Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 28 Transplant: May 16 🌸 Bloom: Jul 18 – Oct 17
Recommended (50%) ✗ May not fit
Start indoors: Apr 5 Transplant: May 24 🌸 Bloom: Jul 26 – Oct 25
Safe Start (90%) ✗ May not fit
Start indoors: Apr 20 Transplant: Jun 8 🌸 Bloom: Aug 10 – Nov 9

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 Shingleton

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

Soil pH

Your soil pH (6.3–7.1) overlaps with Celosia's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Celosia.

Organic Matter

Organic matter is excellent (4.8%) — Celosia will thrive.

How to Plant Celosia

0.1"
Planting Depth
9"
Between Plants
12"
Between Rows

Succession Planting Celosia

3
successive plantings in your 159-day season

Sow every 6.9 weeks. Last sowing by Jul 18 to harvest before frost.

Celosia Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Celosia

Celosia needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Celosia Needs Rainfall You Supplement Action
Jan 2" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 3.5" 0" ❄️ Dormant
May 2.2" 4.3" 0" ✅ Rainfall sufficient
Jun 2.2" 5" 0" ✅ Rainfall sufficient
Jul 2.2" 5" 0" ✅ Rainfall sufficient
Aug 2.2" 4.7" 0" ✅ Rainfall sufficient
Sep 2.2" 3.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3" 0" ✅ Rainfall sufficient
Nov 2.9" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Alger County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Celosia 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.

Celosia needs ~750 GDD — county provides 1,590 GDD Excellent fit

Celosia Planting Timeline — Shingleton, MI

Celosia Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 – Apr 19
Transplant Outdoors May 24 May 24 – Jun 7
Direct Sow May 24 May 24 – Jun 14
Bloom July 26 Jul 26 – Oct 25

Plant 0.1" deep · 9" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

159 days in Alger County

Growing Tips for Celosia in Shingleton

Direct sow Celosia outdoors after May 10 in Alger County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors 4–6 weeks before last frost, or direct-sow after soil warms above 60°F. Does not transplant well from large pots — sow in small cells or direct-sow. Needs full sun and warm soil; cold stress causes stunting. Pinch first bloom to encourage branching. Water at the base; wet foliage encourages fungal issues. Excellent dried flower — harvest before seeds set for the best color retention.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

When should I plant Celosia in Shingleton, MI?

In Shingleton, MI, plant Celosia after the last frost (around May 10) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Shingleton, MI for Celosia?

Shingleton sits in USDA Zone 5a. Celosia grows reliably in zones 3a through 11b, so it's a good fit here.

Can Celosia grow in Shingleton's climate?

Yes — Celosia grows well in Shingleton's temperate climate. Shingleton averages a 159-day frost-free season, with last frost around May 10 and first frost around October 16.

🌱

Your Alger County Garden Planner — Free

A 22-page printable planner built for Alger County (Zone 5a). 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 Alger County, MI. Local conditions may vary. Last updated: June 2026.