When to plant Komatsuna in Jay County, IN
Plant Komatsuna in Jay County after April 26; the prime window is April 12–May 3. A second sowing from August 7 to August 21 extends the harvest into fall.
When to Plant Komatsuna in Jay County, IN
Komatsuna (Japanese mustard spinach) is a versatile Asian green with glossy, dark leaves and a mild, sweet flavor. It is extremely cold-hardy and heat-tolerant.
Jay County, Indiana is in USDA Zone 6a. The average last spring frost is April 26 and the first fall frost is October 16, giving you a growing season of approximately 173 days.
At an elevation of 1,343 feet, Jay County receives approximately 34.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Komatsuna during the growing season.
Jay County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Komatsuna Planting Timeline — Jay County, IN
Komatsuna Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 22 | Mar 22 – Apr 5 |
| Transplant Outdoors | April 26 | Apr 26 – May 10 |
| Direct Sow | April 12 | Apr 12 – May 3 |
| Harvest | May 31 | May 31 – Jul 5 |
| 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 | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow Harvest |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
35–50 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
173 days in Jay County
Growing Tips for Jay County
Direct sow in spring or fall. One of the most forgiving Asian greens for all seasons. Harvest outer leaves or cut whole plants. Excellent for stir-fries, soups, or salads.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Komatsuna in Other Locations
Frequently Asked Questions
When should I plant Komatsuna in Jay County, IN?
Jay County is in Zone 6a with an average last frost of April 26. Plan your Komatsuna planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jay County, IN?
Jay County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 26 and first fall frost is October 16.
When should I plant Komatsuna in Jay County, IN?
In Jay County, IN, plant Komatsuna after the last frost (around April 26) and before the first frost (around October 16). Best results when soil holds above 50°F.
What growing zone is Jay County, IN for Komatsuna?
Jay County sits in USDA Zone 6a. Komatsuna grows reliably in zones 2a through 11b, so it's a good fit here.
Can Komatsuna grow in Jay County's climate?
Yes — Komatsuna grows well in Jay County's temperate climate. Jay County averages a 173-day frost-free season, with last frost around April 26 and first frost around October 16.
Your Jay County Garden Planner — Free
A 22-page printable planner built for Jay 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.