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When to Plant Mint in Baldwin County, AL

Baldwin County, Alabama Zone 9a May

What to do in May

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

Avg. last frost March 3
Avg. first frost November 24
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Bring in the mint

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Before June arrives, get these ready
  • First harvests: mint

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Mint is a vigorous perennial herb with refreshing, aromatic leaves used in teas, cocktails, and cooking. It spreads aggressively by underground runners.

Baldwin County, Alabama is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 24, giving you a growing season of approximately 266 days.

At an elevation of 336 feet, Baldwin County receives approximately 53 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Mint may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Mint will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mint root diseases.

Baldwin County, AL (Zone 9a) Long season
266 days
Last Spring Frost March 3
266 growing days
First Fall Frost November 24
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Baldwin County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.1-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (131 days to spare)
Transplant: Feb 26 🍅 Harvest: Apr 30 – Jul 9
Recommended (50%) ✓ Fits season (126 days to spare)
Transplant: Mar 10 🍅 Harvest: May 12 – Jul 21
Safe Start (90%) ✓ Fits season (126 days to spare)
Transplant: Mar 27 🍅 Harvest: May 29 – Aug 7

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 Baldwin County

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

Soil pH

Your soil pH (5.1–6.2) is more acidic than Mint prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Mint.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Mint.

How to Plant Mint

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Mint

5
successive plantings in your 266-day season

Sow every 6.9 weeks. Last sowing by Aug 26 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Mint

Mint needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Mint Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 4.4" 0" ❄️ Dormant
Mar 3" 5.2" 0" ✅ Rainfall sufficient
Apr 3" 4.1" 0" ✅ Rainfall sufficient
May 3" 4.5" 0" ✅ Rainfall sufficient
Jun 3" 3.9" 0" ✅ Rainfall sufficient
Jul 3" 5.3" 0" ✅ Rainfall sufficient
Aug 3" 5.5" 0" ✅ Rainfall sufficient
Sep 3" 3.8" 0" ✅ Rainfall sufficient
Oct 3" 2.9" 0.1" 💧 Light watering
Nov 3" 4.1" 0" ✅ Rainfall sufficient
Dec 4.6" 0" ❄️ Dormant

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

Mint 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.

Mint needs ~1,594 GDD — county provides 5,652 GDD Excellent fit

Mint Planting Timeline — Baldwin County, AL

Mint Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 – Mar 24
Harvest May 12 May 12 – Jul 21

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

266 days in Baldwin County

Growing Tips for Mint in Baldwin County

Direct sow Mint outdoors after March 03 in Baldwin County when soil has warmed and frost danger has passed.

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

General growing tips

Always grow mint in containers or with underground barriers to control spreading. Harvest regularly to keep plants compact. Cut plants back in late summer for a fresh fall flush.

Companion Planting

Good Companions

Avoid Planting Near

  • Parsley

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Mint in Baldwin County, AL?

Baldwin County is in Zone 9a with an average last frost of March 3. Plan your Mint planting based on this frost date — see the calendar above for exact timing.

What planting zone is Baldwin County, AL?

Baldwin County, Alabama is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 24.

🌱

Your Baldwin County Garden Planner — Free

A 24-page printable planner built for Baldwin 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.

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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 Baldwin 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.