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When to Plant Fava Beans in Crawford County, MI

Crawford County, Michigan Zone 5a May

Top priorities for Crawford County, Michigan gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Crawford County, Michigan.

Avg. last frost May 22
Avg. first frost September 29
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.6 hrs
  1. Transplant fava beans outside

    Frost risk is low now in Crawford County, Michigan. If you've been covering beds overnight, you can stop.

  2. Outdoor sowing time: fava beans

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

Coming up in June — start thinking about
  • Starting indoors: fava beans

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Fava beans are a cool-season legume with large, meaty beans inside thick pods. They fix nitrogen in the soil and are one of the oldest cultivated crops.

Crawford County, Michigan is in USDA Zone 5a. The average last spring frost is May 22 and the first fall frost is September 29, giving you a growing season of approximately 130 days.

At an elevation of 894 feet, Crawford County receives approximately 34.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 81°F, so choose short-season varieties of Fava Beans to ensure they mature before fall.

Crawford County, MI (Zone 5a) Short season
130 days
Last Spring Frost May 22
130 growing days
First Fall Frost September 29

Crawford County Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (8 days to spare)
Start indoors: Apr 13 Transplant: May 18 🍅 Harvest: Aug 3 – Sep 14
Recommended (50%) ✓ Fits season (11 days to spare)
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Aug 7 – Sep 18
Safe Start (90%) ✓ Fits season (10 days to spare)
Start indoors: Apr 29 Transplant: Jun 3 🍅 Harvest: Aug 19 – Sep 30

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 Crawford County

How your county's soil matches Fava Beans's growing requirements.

Soil pH

Your soil pH (5.9–7.0) overlaps with Fava Beans's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Fava Beans

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

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

Plant Water Budget

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

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

Monthly Watering Guide for Fava Beans

Fava Beans needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Fava Beans Needs Rainfall You Supplement Action
Jan 1.3" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 3" 0" ❄️ Dormant
May 4.3" 4.4" 0" ✅ Rainfall sufficient
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 3.8" 0.5" 💧 Light watering
Aug 4.3" 3.9" 0.4" 💧 Light watering
Sep 4.3" 2.8" 1.5" 💧 Light watering
Oct 2.6" 0" ❄️ Dormant
Nov 2.2" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

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

Fava Beans 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.

Fava Beans needs ~941 GDD — county provides 1,397 GDD Excellent fit

Fava Beans Planting Timeline — Crawford County, MI

Fava Beans Planting Calendar

Activity When Date Range
Start Indoors April 17 Apr 17 – May 1
Transplant Outdoors May 22 May 22 – Jun 5
Direct Sow May 8 May 8 – May 29
Harvest August 7 Aug 7 – Sep 18
Fall Sowing July 21 Jul 21 – Aug 4

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

130 days in Crawford County

Growing Tips for Fava Beans in Crawford County

Direct sow Fava Beans outdoors after May 22 in Crawford County when soil has warmed and frost danger has passed.

Common pests for Fava Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow as early as soil can be worked in spring. Pinch growing tips when pods begin to form to redirect energy and reduce aphid problems. Stake tall varieties.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fava Beans in Crawford County, MI?

Crawford County is in Zone 5a with an average last frost of May 22. Plan your Fava Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crawford County, MI?

Crawford County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 22 and first fall frost is September 29.

🌱

Your Crawford County Garden Planner — Free

A 24-page printable planner built for Crawford 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 Crawford 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.