When to plant Arugula in Alger County, MI
Plant Arugula in Alger County after May 10; the prime window is April 26–May 17. A second sowing from August 7 to August 21 extends the harvest into fall.
When to Plant Arugula in Alger County, MI
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.
Alger County, Michigan is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 16, giving you a growing season of approximately 159 days.
At an elevation of 1,014 feet, Alger County receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Arugula to ensure they mature before fall.
Alger County Soil Profile
Soil Type
Silt Loam
Soil pH
6.3-7.1
Drainage
Well Drained
Monthly Watering Guide for Arugula
Arugula needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Arugula Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2" | 0" | ❄️ Dormant |
| Feb | — | 2" | 0" | ❄️ Dormant |
| Mar | — | 2.5" | 0" | ❄️ Dormant |
| Apr | — | 3.5" | 0" | ❄️ Dormant |
| May | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Oct | 4.3" | 3" | 1.3" | 💧 Light watering |
| Nov | — | 2.9" | 0" | ❄️ Dormant |
| Dec | — | 2.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Alger County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Arugula Planting Timeline — Alger County, MI
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 | August 7 | Aug 7 – Aug 21 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
30–50 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
159 days in Alger County
Growing Tips for Alger County
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 Alger County, MI?
Alger County is in Zone 5a 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 Alger County, MI?
Alger County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 10 and first fall frost is October 16.
When should I plant Arugula in Alger County, MI?
In Alger County, MI, plant Arugula after the last frost (around May 10) and before the first frost (around October 16). Best results when soil holds above 50°F.
What growing zone is Alger County, MI for Arugula?
Alger County sits in USDA Zone 5a. Arugula grows reliably in zones 3a through 11b, so it's a good fit here.
Can Arugula grow in Alger County's climate?
Yes — Arugula grows well in Alger County's temperate climate. Alger County averages a 159-day frost-free season, with last frost around May 10 and first frost around October 16.
Your Alger County Garden Planner — Free
A 22-page printable planner built for Alger County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.