When to plant Watermelon in Watonwan County, MN
Plant Watermelon in Watonwan County after April 29; the prime window is May 6–May 27.
When to Plant Watermelon in Watonwan County, MN
Watermelon is a sprawling vine crop that produces sweet, juicy fruits in hot weather. Varieties range from personal-sized icebox types to 50-pound giants.
Watonwan County, Minnesota is in USDA Zone 5a. The average last spring frost is April 29 and the first fall frost is October 6, giving you a growing season of approximately 160 days.
At an elevation of 984 feet, Watonwan County receives approximately 33.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 82°F, so choose short-season varieties of Watermelon to ensure they mature before fall.
Watonwan County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
How Much Watermelon to Grow
For a family of 4, plant approximately 4 watermelon plants in about 8 sq ft. In Watonwan County's 160-day season, you'll have plenty of time for a full harvest. Plan your garden layout →
Watermelon Planting Timeline — Watonwan County, MN
Watermelon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 25 | Mar 25 – Apr 8 |
| Transplant Outdoors | May 13 | May 13 – May 27 |
| Direct Sow | May 6 | May 6 – May 27 |
| Harvest | July 22 | Jul 22 – Sep 9 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
70–100 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
160 days in Watonwan County
Growing Tips for Watonwan County
Start seeds indoors 3-4 weeks early or direct sow after soil is warm. Plant on mounds with plenty of space. Check ripeness by looking for a yellow ground spot and dull thump when tapped.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Watermelon in Other Locations
Frequently Asked Questions
When should I plant Watermelon in Watonwan County, MN?
Watonwan County is in Zone 5a with an average last frost of April 29. Plan your Watermelon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Watonwan County, MN?
Watonwan County, Minnesota is in USDA Hardiness Zone 5a. The average last spring frost is April 29 and first fall frost is October 6.
When should I plant Watermelon in Watonwan County, MN?
In Watonwan County, MN, plant Watermelon after the last frost (around April 29) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Watonwan County, MN for Watermelon?
Watonwan County sits in USDA Zone 5a. Watermelon grows reliably in zones 4a through 11b, so it's a good fit here.
Can Watermelon grow in Watonwan County's climate?
Yes — Watermelon grows well in Watonwan County's temperate climate. Watonwan County averages a 160-day frost-free season, with last frost around April 29 and first frost around October 6.
Your Watonwan County Garden Planner — Free
A 22-page printable planner built for Watonwan 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.