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When to plant Arugula in Hot Spring County, AR

For Arugula in Hot Spring County, the safe spring window opens around March 9 and closes around March 30. Last expected frost is March 23, first fall frost November 9, giving a 231-day growing season. A second sowing from August 31 to September 14 extends the harvest into fall.

When to Plant Arugula in Hot Spring County, AR

Hot Spring County, Arkansas Zone 8a August

August in Hot Spring County, Arkansas — your action list

August rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Hot Spring County, Arkansas.

Avg. last frost March 23
Avg. first frost November 9
Soil temp (4") 88°F
Watering Low
Pest pressure High
Daylight 13.3 hrs
  1. Kick off the fall garden with arugula

    Mid-season soil is hot. Sow a bit deeper than the packet suggests to find cooler, damper ground.

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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.

Hot Spring County, Arkansas is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 9, giving you a growing season of approximately 231 days.

At an elevation of 754 feet, Hot Spring County receives approximately 50 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Arugula during the growing season.

Hot Spring County, AR (Zone 8a) Long season
231 days
Last Spring Frost March 23
231 growing days
First Fall Frost November 9

Hot Spring County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.9

Drainage

Well Drained

Arugula Planting Risk Windows

Early Start (70% safe) ✓ Fits season (132 days to spare)
Start indoors: Feb 8 Transplant: Mar 15 🍅 Harvest: Apr 19 – Jun 21
Recommended (50%) ✓ Fits season (133 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Apr 27 – Jun 29
Safe Start (90%) ✓ Fits season (129 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: May 20 – Jul 22

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 Hot Spring County

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

Soil pH

Your soil pH (5.4–6.9) overlaps with Arugula's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Hot Spring County is excellent for Arugula — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help 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

9
successive plantings in your 231-day season

Sow every 3.4 weeks. Last sowing by Sep 20 to harvest before frost.

For a dedicated fall crop, sow by Aug 31.

Arugula Water Budget

Plant needs
0.6″/week
Rainfall provides
0.9″/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 4" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 2.6" 4.7" 0" ✅ Rainfall sufficient
Apr 2.6" 4.1" 0" ✅ Rainfall sufficient
May 2.6" 3.8" 0" ✅ Rainfall sufficient
Jun 2.6" 4.1" 0" ✅ Rainfall sufficient
Jul 2.6" 5.8" 0" ✅ Rainfall sufficient
Aug 2.6" 5.1" 0" ✅ Rainfall sufficient
Sep 2.6" 4.1" 0" ✅ Rainfall sufficient
Oct 2.6" 2.8" 0" ✅ Rainfall sufficient
Nov 2.6" 3.5" 0" ✅ Rainfall sufficient
Dec 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Hot Spring 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 ~640 GDD — county provides 3,696 GDD Excellent fit

Arugula Planting Timeline — Hot Spring County, AR

Arugula Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 – Mar 2
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 9 Mar 9 – Mar 30
Harvest April 27 Apr 27 – Jun 29
Fall Sowing August 31 Aug 31 – Sep 14

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

30–50 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

231 days in Hot Spring County

Growing Tips for Arugula in Hot Spring County

Direct sow Arugula outdoors after March 23 in Hot Spring County when soil has warmed and frost danger has passed.

Your generous 231.0-day season in Hot Spring 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 Hot Spring County, AR?

Hot Spring County is in Zone 8a with an average last frost of March 23. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hot Spring County, AR?

Hot Spring County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 9.

When should I plant Arugula in Hot Spring County, AR?

In Hot Spring County, AR, plant Arugula after the last frost (around March 23) and before the first frost (around November 9). Best results when soil holds above 50°F.

What growing zone is Hot Spring County, AR for Arugula?

Hot Spring County sits in USDA Zone 8a. Arugula grows reliably in zones 3a through 11b, so it's a good fit here.

Can Arugula grow in Hot Spring County's climate?

Yes — Arugula grows well in Hot Spring County's temperate climate. Hot Spring County averages a 231-day frost-free season, with last frost around March 23 and first frost around November 9.

🌱

Your Hot Spring County Garden Planner — Free

A 22-page printable planner built for Hot Spring County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Hot Spring County, AR. Local conditions may vary. Last updated: August 2026.

Sources & credits

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