Blog

When to Plant Arugula in Torrance County, NM

Torrance County, New Mexico Zone 6b May

May in Torrance County, New Mexico — your action list

Here's what deserves your attention in Torrance County, New Mexico this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost May 10
Avg. first frost October 7
Soil temp (4") 46°F
Watering Critical
Pest pressure Low
Daylight 13.8 hrs
  1. Move arugula into the garden

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

A few tasks this May that'll pay off in June
  • Starting indoors: arugula
  • First harvests: arugula

Instant PDF download. No spam, unsubscribe any time.

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.

Torrance County, New Mexico is in USDA Zone 6b. The average last spring frost is May 10 and the first fall frost is October 7, giving you a growing season of approximately 150 days.

At an elevation of 5,941 feet, Torrance County receives approximately 13.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 87°F, providing good warmth for Arugula during the growing season. Sandy soil warms quickly in spring — great for early planting — but Arugula will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Arugula successfully. Mulch heavily to conserve soil moisture.

Torrance County, NM (Zone 6b) Moderate season
150 days
Last Spring Frost May 10
150 growing days
First Fall Frost October 7
Share this guide:

Torrance County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.8-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Start indoors: Mar 26 Transplant: Apr 30 🍅 Harvest: Jun 4 – Aug 6
Recommended (50%) ✓ Fits season (52 days to spare)
Start indoors: Apr 5 Transplant: May 10 🍅 Harvest: Jun 14 – Aug 16
Safe Start (90%) ✓ Fits season (53 days to spare)
Start indoors: Apr 25 Transplant: May 30 🍅 Harvest: Jul 4 – Sep 5

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 Torrance County

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

Soil pH

Your soil pH (6.8–8.2) is more alkaline than Arugula prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Torrance County warms quickly in spring but drains fast. Arugula will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Arugula.

Organic Matter

Organic matter is low (0.7%). Add 2-3 inches of compost before planting Arugula.

How to Plant Arugula

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

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

Succession Planting Arugula

6
successive plantings in your 150-day season

Sow every 3.4 weeks. Last sowing by Aug 18 to harvest before frost.

For a dedicated fall crop, sow by Jul 29.

Plant Water Budget

Plant needs
0.6″/week
Rainfall provides
0.4″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 626 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

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 0.9" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 0.8" 0" ❄️ Dormant
Apr 0.5" 0" ❄️ Dormant
May 2.6" 0.3" 2.3" 🚿 Regular watering
Jun 2.6" 0.5" 2.1" 🚿 Regular watering
Jul 2.6" 2.1" 0.5" 💧 Light watering
Aug 2.6" 3" 0" ✅ Rainfall sufficient
Sep 2.6" 2.2" 0.4" 💧 Light watering
Oct 2.6" 1.3" 1.3" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.9" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Torrance County). Supplement amounts are based on average rainfall — 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" — 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.

Arugula needs ~610 GDD — county provides 2,287 GDD Excellent fit

Arugula Planting Timeline — Torrance County, NM

Arugula Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 – Apr 19
Transplant Outdoors May 10 May 10 – May 24
Direct Sow April 26 Apr 26 – May 17
Harvest June 14 Jun 14 – Aug 16
Fall Sowing July 29 Jul 29 – Aug 12

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
July Fall Sowing Harvest
August Fall Sowing Harvest
September
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · 1-2 times/week

📅 Days to Maturity

30–50 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6b

📆 Growing Season

150 days in Torrance County

Growing Tips for Arugula in Torrance County

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

Sandy soil in Torrance County dries quickly — mulch Arugula with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your generous 150.0-day season in Torrance 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 Torrance County, NM?

Torrance County is in Zone 6b with an average last frost of May 10. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Torrance County, NM?

Torrance County, New Mexico is in USDA Hardiness Zone 6b. The average last spring frost is May 10 and first fall frost is October 7.

🌱

Your Torrance County Garden Planner — Free

A 24-page printable planner built for Torrance County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Torrance County, NM. 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.