When to Plant Arugula in Mobile County, AL
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.
Mobile County, Alabama is in USDA Zone 8b. The average last spring frost is March 3 and the first fall frost is November 24, giving you a growing season of approximately 266 days.
At an elevation of 101 feet, Mobile County receives approximately 48.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Arugula may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Arugula will need more frequent watering and organic matter to retain nutrients.
Mobile County Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.1
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 Mobile County
How your county's soil matches Arugula's growing requirements.
Soil pH
Your soil pH (4.8–6.1) is more acidic than Arugula prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Mobile 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 moderate (2.2%). Annual compost additions will help Arugula.
How to Plant Arugula
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Arugula
Sow every 3.4 weeks. Last sowing by Oct 05 to harvest before frost.
For a dedicated fall crop, sow by Sep 15.
Plant Water Budget
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 | — | 3.7" | 0" | ❄️ Dormant |
| Feb | — | 3.5" | 0" | ❄️ Dormant |
| Mar | 2.6" | 4.9" | 0" | ✅ Rainfall sufficient |
| Apr | 2.6" | 3.7" | 0" | ✅ Rainfall sufficient |
| May | 2.6" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 4" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 5.5" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 4.2" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 3.6" | 0" | ✅ Rainfall sufficient |
| Oct | 2.6" | 3.5" | 0" | ✅ Rainfall sufficient |
| Nov | 2.6" | 4.3" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Mobile 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 Planting Timeline — Mobile County, AL
Arugula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 27 | Jan 27 – Feb 10 |
| Transplant Outdoors | March 3 | Mar 3 – Mar 17 |
| Direct Sow | February 17 | Feb 17 – Mar 10 |
| Harvest | April 7 | Apr 7 – Jun 9 |
| Fall Sowing | September 15 | Sep 15 – Sep 29 |
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 | Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| 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: too_acidic
🗺️ USDA Zone
Zone 8b
📆 Growing Season
266 days in Mobile County
Growing Tips for Arugula in Mobile County
Direct sow Arugula outdoors after March 03 in Mobile County when soil has warmed and frost danger has passed.
Sandy soil in Mobile County dries quickly — mulch Arugula with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Summer highs in Mobile County reach 97°F — grow Arugula as a spring or fall crop. Use shade cloth if planting in summer.
Your generous 266.0-day season in Mobile 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
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Arugula in Other Locations
Frequently Asked Questions
When should I plant Arugula in Mobile County, AL?
Mobile County is in Zone 8b with an average last frost of March 3. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Mobile County, AL?
Mobile County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 3 and first fall frost is November 24.
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