When to plant Kabocha in Union County, IN
In Union County, plant Kabocha in spring between May 2 and May 23, once soil temps hold above 50°F. Union County's last frost averages April 25, so time plantings around the expected last-frost window for best survival. For a fall crop, sow between and — roughly 85–100 days before the first frost on October 17.
When to Plant Kabocha in Union County, IN
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.
Union County, Indiana is in USDA Zone 6a. The average last spring frost is April 25 and the first fall frost is October 17, giving you a growing season of approximately 175 days.
At an elevation of 506 feet, Union County receives approximately 33.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Kabocha during the growing season.
Union County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Kabocha Planting Timeline — Union County, IN
Kabocha Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 21 | Mar 21 – Apr 4 |
| Transplant Outdoors | May 9 | May 9 – May 23 |
| Direct Sow | May 2 | May 2 – May 23 |
| Harvest | August 8 | Aug 8 – Sep 5 |
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 | — |
| 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
175 days in Union County
Growing Tips for Union 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
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Kabocha in Other Locations
Frequently Asked Questions
When should I plant Kabocha in Union County, IN?
Union County is in Zone 6a with an average last frost of April 25. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.
What planting zone is Union County, IN?
Union County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 25 and first fall frost is October 17.
When should I plant Kabocha in Union County, IN?
In Union County, IN, plant Kabocha after the last frost (around April 25) and before the first frost (around October 17). Best results when soil holds above 50°F.
What growing zone is Union County, IN for Kabocha?
Union 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 Union County's climate?
Yes — Kabocha grows well in Union County's temperate climate. Union County averages a 175-day frost-free season, with last frost around April 25 and first frost around October 17.
Your Union County Garden Planner — Free
A 22-page printable planner built for Union 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.