Blog

When to Plant Black Beans in Stone County, MS

Stone County, Mississippi Zone 9a May

Your May planting checklist for Stone County, Mississippi

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

Avg. last frost March 2
Avg. first frost November 26
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
June prep starts now
  • First harvests: black beans

Instant PDF download. No spam, unsubscribe any time.

Black beans are a warm-season legume producing small, dark, protein-rich beans that are a staple in Latin American and Caribbean cuisines.

Stone County, Mississippi is in USDA Zone 9a. The average last spring frost is March 2 and the first fall frost is November 26, giving you a growing season of approximately 269 days.

At an elevation of 105 feet, Stone County receives approximately 57.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Black Beans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Black Beans will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Black Beans root diseases.

Stone County, MS (Zone 9a) Long season
269 days
Last Spring Frost March 2
269 growing days
First Fall Frost November 26
Share this guide:

Stone County Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (136 days to spare)
Transplant: Feb 16 🍅 Harvest: May 18 – Jul 6
Recommended (50%) ✓ Fits season (129 days to spare)
Transplant: Mar 2 🍅 Harvest: Jun 1 – Jul 20
Safe Start (90%) ✓ Fits season (128 days to spare)
Transplant: Mar 22 🍅 Harvest: Jun 21 – Aug 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 Stone County

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

Soil pH

Your soil pH (5.0–6.3) is more acidic than Black Beans prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Stone County warms quickly in spring but drains fast. Black Beans will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Black Beans.

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting Black Beans.

How to Plant Black Beans

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

Plant Water Budget

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

Monthly Watering Guide for Black Beans

Black 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 Black Beans Needs Rainfall You Supplement Action
Jan 4.8" 0" ❄️ Dormant
Feb 4.8" 0" ❄️ Dormant
Mar 4.3" 5.3" 0" ✅ Rainfall sufficient
Apr 4.3" 4.1" 0.2" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 5.2" 0" ✅ Rainfall sufficient
Jul 4.3" 5.3" 0" ✅ Rainfall sufficient
Aug 4.3" 6.1" 0" ✅ Rainfall sufficient
Sep 4.3" 4.4" 0" ✅ Rainfall sufficient
Oct 4.3" 3.7" 0.6" 💧 Light watering
Nov 4.3" 4.6" 0" ✅ Rainfall sufficient
Dec 5.2" 0" ❄️ Dormant

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

Black 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.

Black Beans needs ~2,310 GDD — county provides 5,918 GDD Excellent fit

Black Beans Planting Timeline — Stone County, MS

Black Beans Planting Calendar

Activity When Date Range
Direct Sow March 9 Mar 9 – Mar 30
Harvest June 8 Jun 8 – Jul 27

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

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April
May
June Harvest
July Harvest
August
September
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

269 days in Stone County

Growing Tips for Black Beans in Stone County

Direct sow Black Beans outdoors after March 02 in Stone County when soil has warmed and frost danger has passed.

Sandy soil in Stone County dries quickly — mulch Black Beans with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96°F in Stone County, provide afternoon shade for Black Beans and water deeply in the morning.

Common pests for Black 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 after last frost. Provide support for climbing varieties. Allow pods to dry fully on the vine before harvesting. Thresh dried pods by hand or in a pillowcase.

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 Black Beans in Stone County, MS?

Stone County is in Zone 9a with an average last frost of March 2. Plan your Black Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Stone County, MS?

Stone County, Mississippi is in USDA Hardiness Zone 9a. The average last spring frost is March 2 and first fall frost is November 26.

🌱

Your Stone County Garden Planner — Free

A 24-page printable planner built for Stone County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Stone County, MS. 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.