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When to Plant Carrots in Montmorency County, MI

Montmorency County, Michigan Zone 5a May

Montmorency County, Michigan gardeners: here's your May plan

May is a pivotal month for Montmorency County, Michigan gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 19
Avg. first frost October 1
Soil temp (4") 52°F
Watering Low
Pest pressure Low
Daylight 14.7 hrs
  1. Plant carrots from seed, right in the garden

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

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Carrots are a popular root vegetable available in orange, purple, white, and yellow varieties. They are rich in beta-carotene and have a sweet, earthy flavor.

Montmorency County, Michigan is in USDA Zone 5a. The average last spring frost is May 19 and the first fall frost is October 1, giving you a growing season of approximately 135 days.

At an elevation of 1,107 feet, Montmorency County receives approximately 40.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Carrots to ensure they mature before fall.

Montmorency County, MI (Zone 5a) Short season
135 days
Last Spring Frost May 19
135 growing days
First Fall Frost October 1
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Montmorency County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (35 days to spare)
Transplant: May 15 🍅 Harvest: Jul 17 – Aug 21
Recommended (50%) ✓ Fits season (37 days to spare)
Transplant: May 19 🍅 Harvest: Jul 21 – Aug 25
Safe Start (90%) ✓ Fits season (39 days to spare)
Transplant: Jun 2 🍅 Harvest: Aug 4 – Sep 8

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 Montmorency County

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

Soil pH

Your soil pH (6.1–6.8) is within Carrots's preferred range (6.0–6.8).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.3%) — Carrots will thrive.

How to Plant Carrots

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Carrots

2
successive plantings in your 135-day season

Sow every 6.9 weeks. Last sowing by Jul 13 to harvest before frost.

For a dedicated fall crop, sow by Jul 23.

Plant Water Budget

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

Monthly Watering Guide for Carrots

Carrots needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Carrots Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 4.1" 0" ❄️ Dormant
May 3.5" 4.3" 0" ✅ Rainfall sufficient
Jun 3.5" 5.6" 0" ✅ Rainfall sufficient
Jul 3.5" 4.2" 0" ✅ Rainfall sufficient
Aug 3.5" 4.7" 0" ✅ Rainfall sufficient
Sep 3.5" 3.4" 0.1" 💧 Light watering
Oct 3.5" 3.2" 0.3" 💧 Light watering
Nov 2.5" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Carrots 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.

Carrots needs ~858 GDD — county provides 1,653 GDD Excellent fit

Carrots Planting Timeline — Montmorency County, MI

Carrots Planting Calendar

Activity When Date Range
Direct Sow May 5 May 5 – May 26
Harvest July 7 Jul 7 – Aug 11
Fall Sowing July 23 Jul 23 – Aug 6

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Direct Sow
June
July Fall Sowing Harvest
August Fall Sowing Harvest
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–6.8 · Your soil: ideal

🗺️ USDA Zone

Zone 5a

📆 Growing Season

135 days in Montmorency County

Growing Tips for Carrots in Montmorency County

Direct sow Carrots outdoors after May 19 in Montmorency County when soil has warmed and frost danger has passed.

Common pests for Carrots in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow seeds directly in loose, stone-free soil for straight roots. Keep soil moist until germination which can take 2-3 weeks. Thin seedlings to 2 inches apart.

Recommended Carrots Varieties for Montmorency County

Fast-maturing varieties for your season

Adelaide (50d) Mokum (54d) Nelson (56d)

Companion Planting

Good Companions

Avoid Planting Near

  • Dill
  • Parsnip

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Carrots Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Replant roots for 2nd year flowers. Harvest umbels when brown.
Storage Store airtight; viable 3 years at 35°F, under 50% humidity.

Isolate 1/2 mile from Queen Anne's Lace (wild carrot). Biennial — requires two seasons.

Frequently Asked Questions

When should I plant Carrots in Montmorency County, MI?

Montmorency County is in Zone 5a with an average last frost of May 19. Plan your Carrots planting based on this frost date — see the calendar above for exact timing.

What planting zone is Montmorency County, MI?

Montmorency County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 19 and first fall frost is October 1.

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Your Montmorency County Garden Planner — Free

A 24-page printable planner built for Montmorency 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 Montmorency County, MI. Local conditions may vary. Last updated: May 2026.

Sources & credits

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