When to plant Kabocha in Ottawa County, MI
Ottawa County's spring Kabocha window runs May 16 through June 6. time plantings around the expected last-frost window for best survival.
When to Plant Kabocha in Ottawa County, MI
Kabocha is a Japanese winter squash with an exceptionally sweet, dense, chestnut-like flesh and dark green skin. It is a favorite in Asian cuisine for its rich, dry texture.
Ottawa County, Michigan is in USDA Zone 6a. The average last spring frost is May 9 and the first fall frost is October 9, giving you a growing season of approximately 153 days.
At an elevation of 1,027 feet, Ottawa County receives approximately 41.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Kabocha to ensure they mature before fall.
Ottawa County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Kabocha Planting Timeline — Ottawa County, MI
Kabocha Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 4 | Apr 4 – Apr 18 |
| Transplant Outdoors | May 23 | May 23 – Jun 6 |
| Direct Sow | May 16 | May 16 – Jun 6 |
| Harvest | August 22 | Aug 22 – Sep 19 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
85–100 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
153 days in Ottawa County
Growing Tips for Ottawa County
Direct sow after frost or start indoors. Harvest when the skin is hard and dull. The stem should be dry and corky. Stores well for 3-4 months in a cool, dry place.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Kabocha in Other Locations
Frequently Asked Questions
When should I plant Kabocha in Ottawa County, MI?
Ottawa County is in Zone 6a with an average last frost of May 9. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.
What planting zone is Ottawa County, MI?
Ottawa County, Michigan is in USDA Hardiness Zone 6a. The average last spring frost is May 9 and first fall frost is October 9.
When should I plant Kabocha in Ottawa County, MI?
In Ottawa County, MI, plant Kabocha after the last frost (around May 9) and before the first frost (around October 9). Best results when soil holds above 50°F.
What growing zone is Ottawa County, MI for Kabocha?
Ottawa County sits in USDA Zone 6a. Kabocha grows reliably in zones 3a through 11b, so it's a good fit here.
Can Kabocha grow in Ottawa County's climate?
Yes — Kabocha grows well in Ottawa County's temperate climate. Ottawa County averages a 153-day frost-free season, with last frost around May 9 and first frost around October 9.
Your Ottawa County Garden Planner — Free
A 22-page printable planner built for Ottawa County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.