When to Plant Arugula in Callahan County, TX
Arugula is a fast-growing cool-season green with a peppery, nutty flavor. It is excellent in salads and can be harvested as baby greens or mature leaves.
Callahan County, Texas is in USDA Zone 7b. The average last spring frost is March 21 and the first fall frost is November 16, giving you a growing season of approximately 240 days.
At an elevation of 4,241 feet, Callahan County receives approximately 59.1 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Arugula during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Arugula root diseases.
Callahan County Soil Profile
Soil Type
Loam
Soil pH
6.8-7.4
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.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Arugula Planting Timeline — Callahan County, TX
Arugula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 14 | Feb 14 – Feb 28 |
| Transplant Outdoors | March 21 | Mar 21 – Apr 4 |
| Direct Sow | March 7 | Mar 7 – Mar 28 |
| Fall Sowing | September 7 | Sep 7 – Sep 21 |
| Harvest | April 25 | Apr 25 – Jun 27 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
30–50 days
Soil pH
6 – 7
USDA Zone
Zone 7b
Growing Season
240 days
Growing Tips for Callahan County
Sow seeds directly every 2-3 weeks for continuous harvest. Provide afternoon shade in warm weather to prevent bolting. Harvest outer leaves first to extend production.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Arugula in Other Locations
Frequently Asked Questions
When should I plant Arugula in Callahan County, TX?
Callahan County is in Zone 7b with an average last frost of March 21. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Callahan County, TX?
Callahan County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 21 and first fall frost is November 16.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Callahan 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.