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When to Plant Cumin in Kleberg County, TX

Cumin is a warm-season annual herb whose seeds are one of the most widely used spices globally. It requires a long, hot growing season of 3-4 months.

Kleberg County, Texas is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 9, giving you a growing season of approximately 299 days.

At an elevation of 1,079 feet, Kleberg County receives approximately 64.4 inches of rainfall annually with predominantly loam soil. Summer highs average 102ยฐF, so Cumin may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cumin root diseases.

Kleberg County, TX (Zone 9a) Year-round
299 days
Last Spring Frost February 13
299 growing days
First Fall Frost December 9

Kleberg County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (153 days to spare)
Start indoors: Dec 23 Transplant: Jan 13 🍅 Harvest: Apr 28 – Jun 30
Recommended (50%) ✓ Fits season (138 days to spare)
Start indoors: Jan 16 Transplant: Feb 6 🍅 Harvest: May 22 – Jul 24
Safe Start (90%) ✓ Fits season (126 days to spare)
Start indoors: Feb 8 Transplant: Mar 1 🍅 Harvest: Jun 14 – Aug 16

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 Kleberg County

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

Soil pH

Your soil pH (6.7โ€“7.6) is within Cumin's preferred range (6.0โ€“8.0).

Soil Texture

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

Organic Matter

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

How to Plant Cumin

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Plant Water Budget

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

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Cumin

Cumin needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Cumin Needs Rainfall You Supplement Action
Jan โ€” 1.7" 0" โ„๏ธ Dormant
Feb 2.2" 2" 0.2" ๐Ÿ’ง Light watering
Mar 2.2" 4.3" 0" โœ… Rainfall sufficient
Apr 2.2" 7.4" 0" โœ… Rainfall sufficient
May 2.2" 10.2" 0" โœ… Rainfall sufficient
Jun 2.2" 9.8" 0" โœ… Rainfall sufficient
Jul 2.2" 8.2" 0" โœ… Rainfall sufficient
Aug 2.2" 6.5" 0" โœ… Rainfall sufficient
Sep 2.2" 6" 0" โœ… Rainfall sufficient
Oct 2.2" 4.3" 0" โœ… Rainfall sufficient
Nov 2.2" 2.3" 0" โœ… Rainfall sufficient
Dec 2.2" 1.7" 0.5" ๐Ÿ’ง Light watering

Water needs are for active growing months only (Febโ€“Dec in Kleberg County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Cumin 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.

Cumin needs ~2,915 GDD — county provides 7,950 GDD Excellent fit

Cumin Planting Timeline โ€” Kleberg County, TX

Cumin Planting Calendar

Activity When Date Range
Start Indoors January 16 Jan 16 โ€“ Jan 30
Transplant Outdoors February 6 Feb 6 โ€“ Feb 20
Direct Sow January 23 Jan 23 โ€“ Feb 13
Harvest May 22 May 22 โ€“ Jul 24
Fall Sowing October 14 Oct 14 โ€“ Oct 28

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

100โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“8 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

299 days in Kleberg County

Growing Tips for Cumin in Kleberg County

Direct sow Cumin outdoors after February 13 in Kleberg County when soil has warmed and frost danger has passed.

With summer highs reaching 102ยฐF in Kleberg County, provide afternoon shade for Cumin and water deeply in the morning.

Common pests for Cumin in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 4 weeks before last frost. Transplant after all danger of frost. Harvest when seed heads turn brown. Requires consistent warmth for proper seed development.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cumin in Kleberg County, TX?

Kleberg County is in Zone 9a with an average last frost of February 13. Plan your Cumin planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kleberg County, TX?

Kleberg County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 9.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kleberg 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 Kleberg County, TX. Local conditions may vary. Last updated: April 2026.