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When to Plant Soybeans in Bullock County, AL

Bullock County, Alabama Zone 8b May

Bullock County, Alabama gardeners: here's your May plan

We've pulled the most time-sensitive tasks for Bullock County, Alabama this May and put them front and centre. Tackle them in order.

Avg. last frost March 8
Avg. first frost November 15
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
To set up a strong June, finish these tasks
  • First harvests: soybeans

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Soybeans (edamame) are a high-protein legume that fixes nitrogen in the soil. Fresh green soybeans harvested at the edamame stage are a nutritious snack.

Bullock County, Alabama is in USDA Zone 8b. The average last spring frost is March 8 and the first fall frost is November 15, giving you a growing season of approximately 252 days.

At an elevation of 179 feet, Bullock County receives approximately 48.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Soybeans during the growing season. Clay soil retains moisture well for Soybeans, but amend with compost to improve drainage and prevent root rot.

Bullock County, AL (Zone 8b) Long season
252 days
Last Spring Frost March 8
252 growing days
First Fall Frost November 15
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Bullock County Soil Profile

Soil Type

Clay Loam

Soil pH

5.8-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (110 days to spare)
Transplant: Mar 3 🍅 Harvest: May 26 – Jul 21
Recommended (50%) ✓ Fits season (112 days to spare)
Transplant: Mar 8 🍅 Harvest: May 31 – Jul 26
Safe Start (90%) ✓ Fits season (109 days to spare)
Transplant: Mar 27 🍅 Harvest: Jun 19 – Aug 14

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 Bullock County

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

Soil pH

Your soil pH (5.8–6.4) overlaps with Soybeans's range (6.0–7.0), though not a perfect match.

Soil Texture

The clay loam soil in Bullock County is excellent for Soybeans — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Soybeans.

How to Plant Soybeans

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

Succession Planting Soybeans

3
successive plantings in your 252-day season

Sow every 9.1 weeks. Last sowing by Jul 18 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 434 gal / 100 sq ft

Monthly Watering Guide for Soybeans

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

Month Soybeans Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 4.3" 4.1" 0.2" 💧 Light watering
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 4.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 3.1" 1.2" 💧 Light watering
Nov 4.3" 3.9" 0.4" 💧 Light watering
Dec 4.3" 0" ❄️ Dormant

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

Soybeans 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.

Soybeans needs ~1,825 GDD — county provides 4,599 GDD Excellent fit

Soybeans Planting Timeline — Bullock County, AL

Soybeans Planting Calendar

Activity When Date Range
Direct Sow March 15 Mar 15 – Apr 5
Harvest June 7 Jun 7 – Aug 2

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

252 days in Bullock County

Growing Tips for Soybeans in Bullock County

Direct sow Soybeans outdoors after March 08 in Bullock County when soil has warmed and frost danger has passed.

With Bullock County's clay soil (30% clay), work in 3-4 inches of compost before planting Soybeans. Avoid tilling when soil is wet to prevent compaction.

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

General growing tips

Direct sow after soil warms to 60F. Plant in blocks rather than rows for better pollination. Harvest for edamame when pods are plump and bright green.

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 Soybeans in Bullock County, AL?

Bullock County is in Zone 8b with an average last frost of March 8. Plan your Soybeans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bullock County, AL?

Bullock County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 8 and first fall frost is November 15.

🌱

Your Bullock County Garden Planner — Free

A 24-page printable planner built for Bullock County (Zone 8b). 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 Bullock County, AL. 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.