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When to Plant Carrots in Lamb County, TX

Lamb County, Texas Zone 7a May

Your May planting checklist for Lamb County, Texas

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

Avg. last frost April 8
Avg. first frost October 27
Soil temp (4") 66°F
Watering Critical
Pest pressure Moderate
Daylight 13.8 hrs
  1. Collect carrots at their peak

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

June prep starts now
  • First harvests: carrots

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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.

Lamb County, Texas is in USDA Zone 7a. The average last spring frost is April 8 and the first fall frost is October 27, giving you a growing season of approximately 202 days.

At an elevation of 1,440 feet, Lamb County receives approximately 56.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Carrots may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — 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.

Lamb County, TX (Zone 7a) Long season
202 days
Last Spring Frost April 8
202 growing days
First Fall Frost October 27
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Lamb County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (100 days to spare)
Transplant: Apr 3 🍅 Harvest: Jun 5 – Jul 10
Recommended (50%) ✓ Fits season (104 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 10 – Jul 15
Safe Start (90%) ✓ Fits season (104 days to spare)
Transplant: Apr 27 🍅 Harvest: Jun 29 – Aug 3

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 Lamb County

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

Soil pH

Your soil pH (7.5–8.4) is more alkaline than Carrots prefers (6.0–6.8). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Carrots.

How to Plant Carrots

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Carrots

3
successive plantings in your 202-day season

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

For a dedicated fall crop, sow by Aug 18.

Plant Water Budget

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

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Carrots

Carrots needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Carrots Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3.5" 0" ❄️ Dormant
Apr 3.5" 2" 1.5" 💧 Light watering
May 3.5" 1.2" 2.3" 🚿 Regular watering
Jun 3.5" 2" 1.5" 💧 Light watering
Jul 3.5" 8.9" 0" ✅ Rainfall sufficient
Aug 3.5" 11.2" 0" ✅ Rainfall sufficient
Sep 3.5" 8.8" 0" ✅ Rainfall sufficient
Oct 3.5" 5.2" 0" ✅ Rainfall sufficient
Nov 3.4" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

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

Carrots 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.

Carrots needs ~1,540 GDD — county provides 4,444 GDD Excellent fit

Carrots Planting Timeline — Lamb County, TX

Carrots Planting Calendar

Activity When Date Range
Direct Sow March 25 Mar 25 – Apr 15
Harvest May 27 May 27 – Jul 1
Fall Sowing August 18 Aug 18 – Sep 1

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

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May Harvest
June Harvest
July Harvest
August Fall Sowing
September Fall Sowing
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–6.8 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

202 days in Lamb County

Growing Tips for Carrots in Lamb County

Direct sow Carrots outdoors after April 08 in Lamb County when soil has warmed and frost danger has passed.

Sandy soil in Lamb County dries quickly — mulch Carrots 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 Lamb County, provide afternoon shade for Carrots and water deeply in the morning.

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

General growing tips

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 35°F, under 50% humidity.

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

Frequently Asked Questions

When should I plant Carrots in Lamb County, TX?

Lamb County is in Zone 7a with an average last frost of April 8. Plan your Carrots planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lamb County, TX?

Lamb County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is April 8 and first fall frost is October 27.

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Your Lamb County Garden Planner — Free

A 24-page printable planner built for Lamb County (Zone 7a). 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 Lamb County, TX. 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.