When to plant Mitsuba in Roscommon County, MI
Roscommon County gardeners should plant Mitsuba between May 1 and May 22 in spring. With Roscommon County's Zone 5a climate (last frost May 15), Mitsuba needs 50–70 days to mature — plant by July 24 for a full harvest. A second sowing from July 24 to August 7 extends the harvest into fall.
When to Plant Mitsuba in Roscommon County, MI
Mitsuba (Japanese parsley) is a shade-loving herb with trefoil leaves and a mild celery-parsley flavor. It is essential in Japanese cuisine for soups, salads, and garnishes.
Roscommon County, Michigan is in USDA Zone 5a. The average last spring frost is May 15 and the first fall frost is October 2, giving you a growing season of approximately 140 days.
At an elevation of 1,298 feet, Roscommon County receives approximately 36 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Mitsuba to ensure they mature before fall.
Roscommon County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Mitsuba Planting Timeline — Roscommon County, MI
Mitsuba Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 10 | Apr 10 – Apr 24 |
| Transplant Outdoors | May 8 | May 8 – May 22 |
| Direct Sow | May 1 | May 1 – May 22 |
| Harvest | July 3 | Jul 3 – Aug 28 |
| Fall Sowing | July 24 | Jul 24 – Aug 7 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing Harvest |
| August | Fall Sowing Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
140 days in Roscommon County
Growing Tips for Roscommon County
Direct sow or start indoors in partial shade. Mitsuba prefers cool, moist conditions. Harvest outer stems as needed. Self-sows readily in shaded garden areas.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Mitsuba in Other Locations
Frequently Asked Questions
When should I plant Mitsuba in Roscommon County, MI?
Roscommon County is in Zone 5a with an average last frost of May 15. Plan your Mitsuba planting based on this frost date — see the calendar above for exact timing.
What planting zone is Roscommon County, MI?
Roscommon County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 15 and first fall frost is October 2.
When should I plant Mitsuba in Roscommon County, MI?
In Roscommon County, MI, plant Mitsuba after the last frost (around May 15) and before the first frost (around October 2). Best results when soil holds above 50°F.
What growing zone is Roscommon County, MI for Mitsuba?
Roscommon County sits in USDA Zone 5a. Mitsuba grows reliably in zones 4a through 9b, so it's a good fit here.
Can Mitsuba grow in Roscommon County's climate?
Yes — Mitsuba grows well in Roscommon County's temperate climate. Roscommon County averages a 140-day frost-free season, with last frost around May 15 and first frost around October 2.
Your Roscommon County Garden Planner — Free
A 22-page printable planner built for Roscommon 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.