When to plant Arugula in Cumberland County, IL
Cumberland County gardeners should plant Arugula between March 31 and April 21 in spring. With Cumberland County's Zone 6b climate (last frost April 14), Arugula needs 30–50 days to mature — plant by August 28 for a full harvest. A second sowing from August 8 to August 22 extends the harvest into fall.
When to Plant Arugula in Cumberland County, IL
Top priorities for Cumberland County, Illinois gardeners in June
Here's what deserves your attention in Cumberland County, Illinois this month. Everything below is tailored to Zone 6b and timed around your local frost dates.
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Start harvesting arugula
If you can't use it all right away, check the food-preservation section of your planner.
A few tasks this June that'll pay off in July
- First harvests: arugula
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.
Cumberland County, Illinois is in USDA Zone 6b. The average last spring frost is April 14 and the first fall frost is October 17, giving you a growing season of approximately 186 days.
At an elevation of 772 feet, Cumberland County receives approximately 31.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Arugula during the growing season.
Cumberland County Soil Profile
Soil Type
Silt Loam
Soil pH
6.3-7
Drainage
Well Drained
Arugula 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 Cumberland County
How your county's soil matches Arugula's growing requirements.
Soil pH
Your soil pH (6.3–7.0) is within Arugula's preferred range (6.0–7.0).
Soil Texture
The silt loam soil in Cumberland County is excellent for Arugula — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.9%). 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 Aug 28 to harvest before frost.
For a dedicated fall crop, sow by Aug 08.
Arugula 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 | — | 1.6" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | — | 2.1" | 0" | ❄️ Dormant |
| Apr | 2.6" | 3.3" | 0" | ✅ Rainfall sufficient |
| May | 2.6" | 3.3" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 3.6" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 3" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 2.9" | 0" | ✅ Rainfall sufficient |
| Oct | 2.6" | 2.7" | 0" | ✅ Rainfall sufficient |
| Nov | — | 2.2" | 0" | ❄️ Dormant |
| Dec | — | 1.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Cumberland 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 — Cumberland County, IL
Arugula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 10 | Mar 10 – Mar 24 |
| Transplant Outdoors | April 14 | Apr 14 – Apr 28 |
| Direct Sow | March 31 | Mar 31 – Apr 21 |
| Harvest | May 19 | May 19 – Jul 21 |
| Fall Sowing | August 8 | Aug 8 – Aug 22 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| 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: ideal
🗺️ USDA Zone
Zone 6b
📆 Growing Season
186 days in Cumberland County
Growing Tips for Arugula in Cumberland County
Direct sow Arugula outdoors after April 14 in Cumberland County when soil has warmed and frost danger has passed.
Your generous 186.0-day season in Cumberland 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
Check more plant combinations with our Companion Planting Checker →
Arugula in Other Locations
Frequently Asked Questions
When should I plant Arugula in Cumberland County, IL?
Cumberland County is in Zone 6b with an average last frost of April 14. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cumberland County, IL?
Cumberland County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 14 and first fall frost is October 17.
When should I plant Arugula in Cumberland County, IL?
In Cumberland County, IL, plant Arugula after the last frost (around April 14) and before the first frost (around October 17). Best results when soil holds above 50°F.
What growing zone is Cumberland County, IL for Arugula?
Cumberland County sits in USDA Zone 6b. Arugula grows reliably in zones 3a through 11b, so it's a good fit here.
Can Arugula grow in Cumberland County's climate?
Yes — Arugula grows well in Cumberland County's temperate climate. Cumberland County averages a 186-day frost-free season, with last frost around April 14 and first frost around October 17.
Your Cumberland County Garden Planner — Free
A 22-page printable planner built for Cumberland 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.