When to Plant Celtuce in Comal County, TX
Celtuce (stem lettuce) is a Chinese vegetable grown for its thick, crunchy stem rather than its leaves. The peeled stem has a mild, cucumber-like flavor.
Comal County, Texas is in USDA Zone 8b. The average last spring frost is March 6 and the first fall frost is November 22, giving you a growing season of approximately 261 days.
At an elevation of 1,346 feet, Comal County receives approximately 58.6 inches of rainfall annually with predominantly clay soil. Summer highs average 91°F, providing good warmth for Celtuce during the growing season. Clay soil retains moisture well for Celtuce, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celtuce root diseases.
Comal County Soil Profile
Soil Type
Clay
Soil pH
6.7-7.7
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 Comal County
How your county's soil matches Celtuce's growing requirements.
Soil pH
Your soil pH (6.7–7.7) is more alkaline than Celtuce prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
Heavy clay soil (47% clay) in Comal County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.
Drainage
Drainage is adequate for Celtuce.
Organic Matter
Organic matter is moderate (3.3%). Annual compost additions will help Celtuce.
How to Plant Celtuce
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Celtuce
Sow every 6.9 weeks. Last sowing by Aug 24 to harvest before frost.
For a dedicated fall crop, sow by Sep 13.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Celtuce
Celtuce needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Celtuce Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.2" | 0" | ❄️ Dormant |
| Feb | — | 2.1" | 0" | ❄️ Dormant |
| Mar | 3" | 3.8" | 0" | ✅ Rainfall sufficient |
| Apr | 3" | 6.6" | 0" | ✅ Rainfall sufficient |
| May | 3" | 9.4" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 9.9" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 6.6" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 6.4" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.9" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 2" | 1" | 💧 Light watering |
| Dec | — | 1.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Comal County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Celtuce 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.
Celtuce Planting Timeline — Comal County, TX
Celtuce Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 30 | Jan 30 – Feb 13 |
| Transplant Outdoors | March 6 | Mar 6 – Mar 20 |
| Direct Sow | February 20 | Feb 20 – Mar 13 |
| Harvest | May 8 | May 8 – Jun 19 |
| Fall Sowing | September 13 | Sep 13 – Sep 27 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| 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
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8b
📆 Growing Season
261 days in Comal County
Growing Tips for Celtuce in Comal County
Direct sow Celtuce outdoors after March 06 in Comal County when soil has warmed and frost danger has passed.
With Comal County's clay soil (47% clay), work in 3-4 inches of compost before planting Celtuce. Avoid tilling when soil is wet to prevent compaction.
Common pests for Celtuce in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in spring or start indoors. Space 12 inches apart. Harvest when stems are about 1 inch in diameter. Peel the tough outer skin to reveal the tender center.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Celtuce in Other Locations
Frequently Asked Questions
When should I plant Celtuce in Comal County, TX?
Comal County is in Zone 8b with an average last frost of March 6. Plan your Celtuce planting based on this frost date — see the calendar above for exact timing.
What planting zone is Comal County, TX?
Comal County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 6 and first fall frost is November 22.
Plan Your Garden with Confidence
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