When to plant Spinach in Wadena County, MN
Plant Spinach in Wadena County from May 6 to May 27 in spring. Wadena County sits in USDA Zone 4a, with last frost around May 13 and first frost on September 27. A second sowing from July 5 to July 19 extends the harvest into fall.
When to Plant Spinach in Wadena County, MN
Wadena County, Minnesota gardeners: here's your July plan
July is a pivotal month for Wadena County, Minnesota gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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It's harvest week for spinach
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
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Sow spinach for an autumn harvest
Fall crops get sweeter with a light frost. Don't be afraid of cool nights.
Coming up in August — start thinking about
- First harvests: spinach
Spinach is a nutrient-packed cool-season green that grows quickly in spring and fall. It is rich in iron, vitamins, and antioxidants and excellent raw or cooked.
Wadena County, Minnesota is in USDA Zone 4a. The average last spring frost is May 13 and the first fall frost is September 27, giving you a growing season of approximately 137 days.
At an elevation of 1,320 feet, Wadena County receives approximately 40.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 79°F, so choose short-season varieties of Spinach to ensure they mature before fall.
Wadena County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-7.3
Drainage
Well Drained
Spinach 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 Wadena County
How your county's soil matches Spinach's growing requirements.
Soil pH
Your soil pH (6.1–7.3) overlaps with Spinach's range (6.5–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Wadena County is excellent for Spinach — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Spinach.
Organic Matter
Organic matter is excellent (4.8%) — Spinach will thrive.
How to Plant Spinach
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Succession Planting Spinach
Sow every 4 weeks. Last sowing by Aug 08 to harvest before frost.
For a dedicated fall crop, sow by Jul 05.
Spinach Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Spinach
Spinach needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Spinach Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.8" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | — | 3.3" | 0" | ❄️ Dormant |
| Apr | — | 3.7" | 0" | ❄️ Dormant |
| May | 3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 4.2" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 3.9" | 0" | ✅ Rainfall sufficient |
| Oct | — | 2.8" | 0" | ❄️ Dormant |
| Nov | — | 2.6" | 0" | ❄️ Dormant |
| Dec | — | 2.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Wadena County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Spinach 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.
Spinach Planting Timeline — Wadena County, MN
Spinach Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 1 | Apr 1 – Apr 15 |
| Transplant Outdoors | May 13 | May 13 – May 27 |
| Direct Sow | May 6 | May 6 – May 27 |
| Harvest | June 17 | Jun 17 – Aug 19 |
| Fall Sowing | July 5 | Jul 5 – Jul 19 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Fall Sowing Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
35–50 days
🧪 Soil pH
Needs 6.5–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 4a
📆 Growing Season
137 days in Wadena County
Growing Tips for Spinach in Wadena County
Direct sow Spinach outdoors after May 13 in Wadena County when soil has warmed and frost danger has passed.
Your generous 137.0-day season in Wadena County allows multiple plantings of Spinach. Sow every 17.0 days for continuous harvest.
General growing tips
Direct sow as soon as soil can be worked in spring. Plant in partial shade for summer crops to delay bolting. Succession plant every 2 weeks for continuous harvest.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Wind pollinated — isolate 1/2 mile for purity. Easy to let bolt in heat.
Spinach in Other Locations
Frequently Asked Questions
When should I plant Spinach in Wadena County, MN?
Wadena County is in Zone 4a with an average last frost of May 13. Plan your Spinach planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wadena County, MN?
Wadena County, Minnesota is in USDA Hardiness Zone 4a. The average last spring frost is May 13 and first fall frost is September 27.
When should I plant Spinach in Wadena County, MN?
In Wadena County, MN, plant Spinach after the last frost (around May 13) and before the first frost (around September 27). Best results when soil holds above 50°F.
What growing zone is Wadena County, MN for Spinach?
Wadena County sits in USDA Zone 4a. Spinach grows reliably in zones 2a through 10b, so it's a good fit here.
Can Spinach grow in Wadena County's climate?
Yes — Spinach grows well in Wadena County's temperate climate. Wadena County averages a 137-day frost-free season, with last frost around May 13 and first frost around September 27.
Your Wadena County Garden Planner — Free
A 22-page printable planner built for Wadena County (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.