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When to Plant Mint in Calhoun County, TX

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

Calhoun County, Texas is in USDA Zone 9a. The average last spring frost is February 16 and the first fall frost is December 7, giving you a growing season of approximately 294 days.

At an elevation of 215 feet, Calhoun County receives approximately 59.5 inches of rainfall annually with predominantly loam soil. Summer highs average 99ยฐF, so Mint may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mint root diseases.

Calhoun County, TX (Zone 9a) Year-round
294 days
Last Spring Frost February 16
294 growing days
First Fall Frost December 7

Calhoun County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (171 days to spare)
Transplant: Jan 30 🍅 Harvest: Apr 3 – Jun 12
Recommended (50%) ✓ Fits season (154 days to spare)
Transplant: Feb 23 🍅 Harvest: Apr 27 – Jul 6
Safe Start (90%) ✓ Fits season (145 days to spare)
Transplant: Mar 17 🍅 Harvest: May 19 – Jul 28

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 Calhoun County

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

Soil pH

Your soil pH (6.2โ€“7.8) overlaps with Mint's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Calhoun County is excellent for Mint โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Mint.

How to Plant Mint

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

Succession Planting Mint

5
successive plantings in your 294-day season

Sow every 6.9 weeks. Last sowing by Sep 08 to harvest before frost.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
0.9″/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 โ€” 1.4" 0" โ„๏ธ Dormant
Feb 3" 2.2" 0.8" ๐Ÿ’ง Light watering
Mar 3" 4.6" 0" โœ… Rainfall sufficient
Apr 3" 6.7" 0" โœ… Rainfall sufficient
May 3" 8.5" 0" โœ… Rainfall sufficient
Jun 3" 9.1" 0" โœ… Rainfall sufficient
Jul 3" 7.3" 0" โœ… Rainfall sufficient
Aug 3" 6.6" 0" โœ… Rainfall sufficient
Sep 3" 5.2" 0" โœ… Rainfall sufficient
Oct 3" 3.9" 0" โœ… Rainfall sufficient
Nov 3" 2.2" 0.8" ๐Ÿ’ง Light watering
Dec 3" 1.9" 1.1" ๐Ÿ’ง Light watering

Water needs are for active growing months only (Febโ€“Dec in Calhoun County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~1,819 GDD — county provides 7,153 GDD Excellent fit

Mint Planting Timeline โ€” Calhoun County, TX

Mint Planting Calendar

Activity When Date Range
Transplant Outdoors February 23 Feb 23 โ€“ Mar 9
Harvest April 27 Apr 27 โ€“ Jul 6

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Transplant Outdoors
March Transplant Outdoors
April Harvest
May Harvest
June Harvest
July Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

0.7"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

294 days in Calhoun County

Growing Tips for Mint in Calhoun County

Direct sow Mint outdoors after February 16 in Calhoun County when soil has warmed and frost danger has passed.

With summer highs reaching 99ยฐF in Calhoun County, provide afternoon shade for Mint and water deeply in the morning.

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 Calhoun County, TX?

Calhoun County is in Zone 9a with an average last frost of February 16. Plan your Mint planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Calhoun County, TX?

Calhoun County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 16 and first fall frost is December 7.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Calhoun County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Calhoun County, TX. Local conditions may vary. Last updated: April 2026.