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When to Plant Arugula in Nueces 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.

Nueces County, Texas is in USDA Zone 9a. The average last spring frost is February 10 and the first fall frost is December 10, giving you a growing season of approximately 303 days.

At an elevation of 1,586 feet, Nueces County receives approximately 53.3 inches of rainfall annually with predominantly loam soil. Summer highs average 95ยฐF, so Arugula may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Arugula root diseases.

Nueces County, TX (Zone 9a) Year-round
303 days
Last Spring Frost February 10
303 growing days
First Fall Frost December 10

Nueces County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (217 days to spare)
Start indoors: Dec 22 Transplant: Jan 19 🍅 Harvest: Feb 23 – Apr 27
Recommended (50%) ✓ Fits season (205 days to spare)
Start indoors: Jan 13 Transplant: Feb 10 🍅 Harvest: Mar 17 – May 19
Safe Start (90%) ✓ Fits season (187 days to spare)
Start indoors: Feb 10 Transplant: Mar 10 🍅 Harvest: Apr 14 – Jun 16

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 Nueces County

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

Soil pH

Your soil pH (6.8โ€“7.8) is more alkaline than Arugula prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Nueces County is excellent for Arugula โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Arugula

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Arugula

12
successive plantings in your 303-day season

Sow every 3.4 weeks. Last sowing by Oct 21 to harvest before frost.

For a dedicated fall crop, sow by Oct 15.

Plant Water Budget

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

Monthly Watering Guide for Arugula

Arugula needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Arugula Needs Rainfall You Supplement Action
Jan โ€” 1.6" 0" โ„๏ธ Dormant
Feb 2.6" 1.6" 1" ๐Ÿ’ง Light watering
Mar 2.6" 3.6" 0" โœ… Rainfall sufficient
Apr 2.6" 5.4" 0" โœ… Rainfall sufficient
May 2.6" 7.5" 0" โœ… Rainfall sufficient
Jun 2.6" 8.9" 0" โœ… Rainfall sufficient
Jul 2.6" 7.2" 0" โœ… Rainfall sufficient
Aug 2.6" 5.9" 0" โœ… Rainfall sufficient
Sep 2.6" 5.4" 0" โœ… Rainfall sufficient
Oct 2.6" 3.1" 0" โœ… Rainfall sufficient
Nov 2.6" 1.7" 0.9" ๐Ÿ’ง Light watering
Dec 2.6" 1.3" 1.3" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Febโ€“Dec in Nueces County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Arugula 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" โ€” every day above 50ยฐF 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.

Arugula needs ~850 GDD — county provides 6,460 GDD Excellent fit

Arugula Planting Timeline โ€” Nueces County, TX

Arugula Planting Calendar

Activity When Date Range
Start Indoors January 13 Jan 13 โ€“ Jan 27
Transplant Outdoors February 10 Feb 10 โ€“ Feb 24
Direct Sow January 20 Jan 20 โ€“ Feb 10
Harvest March 17 Mar 17 โ€“ May 19
Fall Sowing October 15 Oct 15 โ€“ Oct 29

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

Month-by-Month Timeline

MonthActivities
January Start Indoors Direct Sow
February Transplant Outdoors Direct Sow
March Harvest
April Harvest
May Harvest
June โ€”
July โ€”
August โ€”
September โ€”
October Fall Sowing
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

0.6"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

30โ€“50 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

303 days in Nueces County

Growing Tips for Arugula in Nueces County

Direct sow Arugula outdoors after February 10 in Nueces County when soil has warmed and frost danger has passed.

Summer highs in Nueces County reach 95ยฐF โ€” grow Arugula as a spring or fall crop. Use shade cloth if planting in summer.

Your generous 304.0-day season in Nueces County allows multiple plantings of Arugula. Sow every 15.0 days for continuous harvest.

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

General growing tips

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

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Arugula in Nueces County, TX?

Nueces County is in Zone 9a with an average last frost of February 10. Plan your Arugula planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Nueces County, TX?

Nueces County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 10 and first fall frost is December 10.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Nueces County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

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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 Nueces County, TX. Local conditions may vary. Last updated: April 2026.