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When to Plant Carrots in Sterling County, TX

Carrots are a popular root vegetable available in orange, purple, white, and yellow varieties. They are rich in beta-carotene and have a sweet, earthy flavor.

Sterling County, Texas is in USDA Zone 7b. The average last spring frost is March 24 and the first fall frost is November 12, giving you a growing season of approximately 233 days.

At an elevation of 2,929 feet, Sterling County receives approximately 50.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99Β°F, so Carrots may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring β€” great for early planting β€” but Carrots will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Carrots root diseases.

Sterling County, TX (Zone 7b) Long season
233 days
Last Spring Frost March 24
233 growing days
First Fall Frost November 12

Sterling County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Monthly Watering Guide for Carrots

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

Month Carrots Needs Rainfall You Supplement Action
Jan β€” 3.5" 0" ❄️ Dormant
Feb β€” 2.7" 0" ❄️ Dormant
Mar 4.3" 2.8" 1.5" πŸ’§ Light watering
Apr 4.3" 1.9" 2.4" 🚿 Regular watering
May 4.3" 1.3" 3" 🚿 Regular watering
Jun 4.3" 1.9" 2.4" 🚿 Regular watering
Jul 4.3" 8.9" 0" βœ… Rainfall sufficient
Aug 4.3" 9.4" 0" βœ… Rainfall sufficient
Sep 4.3" 7.9" 0" βœ… Rainfall sufficient
Oct 4.3" 4.2" 0.1" πŸ’§ Light watering
Nov 4.3" 3" 1.3" πŸ’§ Light watering
Dec β€” 3.3" 0" ❄️ Dormant

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

Carrots Planting Timeline β€” Sterling County, TX

Carrots Planting Calendar

Activity When Date Range
Direct Sow March 10 Mar 10 – Mar 31
Harvest May 12 May 12 – Jun 16
Fall Sowing September 3 Sep 3 – Sep 17

Plant 0.5" deep Β· 6" apart Β· Rows 12" apart

Month-by-Month Timeline

MonthActivities
January β€”
February β€”
March Direct Sow
April β€”
May Harvest
June Harvest
July β€”
August β€”
September Fall Sowing
October β€”
November β€”
December β€”

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

60–80 days

πŸ§ͺ Soil pH

Needs 6–6.8 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7b

πŸ“† Growing Season

233 days in Sterling County

Growing Tips for Sterling County

Sow seeds directly in loose, stone-free soil for straight roots. Keep soil moist until germination which can take 2-3 weeks. Thin seedlings to 2 inches apart.

Companion Planting

Good Companions

Avoid Planting Near

  • Dill
  • Parsnip

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Carrots Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Replant roots for 2nd year flowers. Harvest umbels when brown.
Storage Store airtight; viable 3 years at 35Β°F, under 50% humidity.

Isolate 1/2 mile from Queen Anne's Lace (wild carrot). Biennial β€” requires two seasons.

Frequently Asked Questions

When should I plant Carrots in Sterling County, TX?

Sterling County is in Zone 7b with an average last frost of March 24. Plan your Carrots planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Sterling County, TX?

Sterling County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 24 and first fall frost is November 12.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Sterling County gardeners in Zone 7b 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 Sterling County, TX. Local conditions may vary. Last updated: April 2026.