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When to Plant Fava Beans in Towner County, ND

Towner County, North Dakota Zone 3b May

Your May planting checklist for Towner County, North Dakota

Your garden in Towner County, North Dakota is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost May 15
Avg. first frost September 23
Soil temp (4") 51°F
Watering Moderate
Pest pressure Low
Daylight 15 hrs
  1. Transplant fava beans outside

    Frost risk is low now in Towner County, North Dakota. If you've been covering beds overnight, you can stop.

  2. Scatter fava beans into prepared beds

    Mark the row. Birds and stray feet both have opinions about unmarked beds.

June will be here before you know it — start on
  • 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.

Towner County, North Dakota is in USDA Zone 3b. The average last spring frost is May 15 and the first fall frost is September 23, giving you a growing season of approximately 131 days.

At an elevation of 629 feet, Towner County receives approximately 23.1 inches of rainfall annually with predominantly loam soil. Summer highs average 78°F, so choose short-season varieties of Fava Beans to ensure they mature before fall.

Towner County, ND (Zone 3b) Short season
131 days
Last Spring Frost May 15
131 growing days
First Fall Frost September 23

Towner County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (9 days to spare)
Start indoors: Mar 31 Transplant: May 12 🍅 Harvest: Jul 28 – Sep 8
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Apr 3 Transplant: May 15 🍅 Harvest: Jul 31 – Sep 11
Safe Start (90%) ✓ Fits season (11 days to spare)
Start indoors: Apr 17 Transplant: May 29 🍅 Harvest: Aug 14 – Sep 25

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 Towner County

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

Soil pH

Your soil pH (6.4–7.4) overlaps with Fava Beans's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Fava Beans.

Organic Matter

Organic matter is excellent (4.0%) — Fava Beans will thrive.

How to Plant Fava Beans

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 783 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 0.6" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.3" 0" ❄️ Dormant
Apr 2.1" 0" ❄️ Dormant
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 2.5" 1.8" 💧 Light watering
Aug 4.3" 2.5" 1.8" 💧 Light watering
Sep 4.3" 2.3" 2" 💧 Light watering
Oct 1.7" 0" ❄️ Dormant
Nov 0.9" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Towner 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 ~744 GDD — county provides 1,113 GDD Excellent fit

Fava Beans Planting Timeline — Towner County, ND

Fava Beans Planting Calendar

Activity When Date Range
Start Indoors April 3 Apr 3 – Apr 17
Transplant Outdoors May 15 May 15 – May 29
Direct Sow May 8 May 8 – May 29
Harvest July 31 Jul 31 – Sep 11
Fall Sowing July 1 Jul 1 – Jul 15

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 3b

📆 Growing Season

131 days in Towner County

Growing Tips for Fava Beans in Towner County

Direct sow Fava Beans outdoors after May 15 in Towner 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.

Towner County receives only 23" of rain annually. Fava Beans needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Towner County, ND?

Towner County is in Zone 3b with an average last frost of May 15. Plan your Fava Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Towner County, ND?

Towner County, North Dakota is in USDA Hardiness Zone 3b. The average last spring frost is May 15 and first fall frost is September 23.

🌱

Your Towner County Garden Planner — Free

A 24-page printable planner built for Towner County (Zone 3b). 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 Towner County, ND. 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.