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When to Plant Rutabaga in Comanche County, TX

Comanche County, Texas Zone 8b May

What to do in May

Each item below is timed to Comanche County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 19
Avg. first frost November 14
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. It's harvest week for rutabaga

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Coming up in June — start thinking about
  • First harvests: rutabaga

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Rutabagas are a cross between turnips and cabbage, producing large yellow-fleshed roots with a sweet, mild flavor. They are excellent mashed, roasted, or in stews.

Comanche County, Texas is in USDA Zone 8b. The average last spring frost is March 19 and the first fall frost is November 14, giving you a growing season of approximately 240 days.

At an elevation of 2,216 feet, Comanche County receives approximately 59.6 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Rutabaga during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Rutabaga root diseases.

Comanche County, TX (Zone 8b) Long season
240 days
Last Spring Frost March 19
240 growing days
First Fall Frost November 14

Comanche County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Transplant: Mar 8 🍅 Harvest: May 31 – Jul 5
Recommended (50%) ✓ Fits season (121 days to spare)
Transplant: Mar 19 🍅 Harvest: Jun 11 – Jul 16
Safe Start (90%) ✓ Fits season (116 days to spare)
Transplant: Apr 12 🍅 Harvest: Jul 5 – Aug 9

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 Comanche County

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

Soil pH

Your soil pH (6.6–7.5) is within Rutabaga's preferred range (6.0–7.5).

Soil Texture

The loam soil in Comanche County is excellent for Rutabaga — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Rutabaga.

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Rutabaga.

How to Plant Rutabaga

1"
Planting Depth
15"
Between Plants
24"
Between Rows

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

Succession Planting Rutabaga

3
successive plantings in your 240-day season

Sow every 9.1 weeks. Last sowing by Aug 06 to harvest before frost.

For a dedicated fall crop, sow by Sep 05.

Plant Water Budget

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

Monthly Watering Guide for Rutabaga

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

Month Rutabaga Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 2.1" 0" ❄️ Dormant
Mar 3" 3.4" 0" ✅ Rainfall sufficient
Apr 3" 5.9" 0" ✅ Rainfall sufficient
May 3" 9.3" 0" ✅ Rainfall sufficient
Jun 3" 8.7" 0" ✅ Rainfall sufficient
Jul 3" 8.8" 0" ✅ Rainfall sufficient
Aug 3" 6.6" 0" ✅ Rainfall sufficient
Sep 3" 5.5" 0" ✅ Rainfall sufficient
Oct 3" 4.1" 0" ✅ Rainfall sufficient
Nov 3" 1.9" 1.1" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

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

Rutabaga 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.

Rutabaga needs ~1,642 GDD — county provides 4,380 GDD Excellent fit

Rutabaga Planting Timeline — Comanche County, TX

Rutabaga Planting Calendar

Activity When Date Range
Direct Sow March 5 Mar 5 – Mar 26
Harvest May 28 May 28 – Jul 2
Fall Sowing September 5 Sep 5 – Sep 19

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

80–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 8b

📆 Growing Season

240 days in Comanche County

Growing Tips for Rutabaga in Comanche County

Direct sow Rutabaga outdoors after March 19 in Comanche County when soil has warmed and frost danger has passed.

Common pests for Rutabaga in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow in early summer for fall harvest. Thin seedlings to 6-8 inches apart. Flavor improves significantly after a few light frosts.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Rutabaga in Comanche County, TX?

Comanche County is in Zone 8b with an average last frost of March 19. Plan your Rutabaga planting based on this frost date — see the calendar above for exact timing.

What planting zone is Comanche County, TX?

Comanche County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 19 and first fall frost is November 14.

🌱

Your Comanche County Garden Planner — Free

A 24-page printable planner built for Comanche County (Zone 8b). 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 Comanche 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.