When to Plant Kohlrabi in Culberson County, TX
Kohlrabi is an unusual brassica that forms a swollen stem above ground with a mild, sweet turnip-like flavor. Both the bulb and tender leaves are edible.
Culberson County, Texas is in USDA Zone 7b. The average last spring frost is March 29 and the first fall frost is November 11, giving you a growing season of approximately 227 days.
At an elevation of 2,716 feet, Culberson County receives approximately 50.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°F, so Kohlrabi may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Kohlrabi will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kohlrabi root diseases.
Culberson County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.5-8.1
Drainage
Well Drained
Plant Planting Risk Windows
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 Culberson County
How your county's soil matches Kohlrabi's growing requirements.
Soil pH
Your soil pH (7.5–8.1) is more alkaline than Kohlrabi prefers (6.0–7.5). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Culberson County warms quickly in spring but drains fast. Kohlrabi will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.1%). Add 2-3 inches of compost before planting Kohlrabi.
How to Plant Kohlrabi
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Kohlrabi
Sow every 5.1 weeks. Last sowing by Sep 07 to harvest before frost.
For a dedicated fall crop, sow by Sep 02.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Kohlrabi
Kohlrabi needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Kohlrabi Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.5" | 0" | ❄️ Dormant |
| Feb | — | 3.2" | 0" | ❄️ Dormant |
| Mar | 3" | 2.8" | 0.2" | 💧 Light watering |
| Apr | 3" | 1.8" | 1.2" | 💧 Light watering |
| May | 3" | 1.3" | 1.7" | 🚿 Regular watering |
| Jun | 3" | 1.7" | 1.3" | 💧 Light watering |
| Jul | 3" | 8.5" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 9.7" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 7.2" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 3.2" | 0" | ✅ Rainfall sufficient |
| Dec | — | 3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Culberson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Kohlrabi 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.
Kohlrabi Planting Timeline — Culberson County, TX
Kohlrabi Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 22 | Feb 22 – Mar 8 |
| Transplant Outdoors | March 29 | Mar 29 – Apr 12 |
| Direct Sow | March 15 | Mar 15 – Apr 5 |
| Harvest | May 17 | May 17 – Jun 21 |
| Fall Sowing | September 2 | Sep 2 – Sep 16 |
Plant 0.5" deep · 4" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| 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
45–65 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 7b
📆 Growing Season
227 days in Culberson County
Growing Tips for Kohlrabi in Culberson County
Direct sow Kohlrabi outdoors after March 29 in Culberson County when soil has warmed and frost danger has passed.
Sandy soil in Culberson County dries quickly — mulch Kohlrabi 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 Culberson County, provide afternoon shade for Kohlrabi and water deeply in the morning.
Your generous 227.0-day season in Culberson County allows multiple plantings of Kohlrabi. Sow every 22.0 days for continuous harvest.
Common pests for Kohlrabi 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 spring or fall. Harvest when bulbs are 2-3 inches in diameter for best texture and flavor. Larger bulbs may become woody and fibrous.
Companion Planting
Good Companions
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Kohlrabi in Other Locations
Frequently Asked Questions
When should I plant Kohlrabi in Culberson County, TX?
Culberson County is in Zone 7b with an average last frost of March 29. Plan your Kohlrabi planting based on this frost date — see the calendar above for exact timing.
What planting zone is Culberson County, TX?
Culberson County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 29 and first fall frost is November 11.
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