When to Plant Mitsuba in Lafayette Parish, LA
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.
Lafayette Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 5, giving you a growing season of approximately 295 days.
At an elevation of 129 feet, Lafayette Parish receives approximately 48.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 104°F, so Mitsuba may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Mitsuba will need more frequent watering and organic matter to retain nutrients.
Lafayette Parish Soil Profile
Soil Type
Sandy Loam
Soil pH
4.8-6.4
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Mitsuba Planting Timeline — Lafayette Parish, LA
Mitsuba Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 16 | Jan 16 – Jan 30 |
| Transplant Outdoors | February 6 | Feb 6 – Feb 20 |
| Direct Sow | January 23 | Jan 23 – Feb 13 |
| Fall Sowing | October 10 | Oct 10 – Oct 24 |
| Harvest | April 3 | Apr 3 – May 29 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
50–70 days
Soil pH
6 – 7
USDA Zone
Zone 9a
Growing Season
295 days
Growing Tips for Lafayette Parish
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
Level Up Your Garden
Mitsuba in Other Locations
Frequently Asked Questions
When should I plant Mitsuba in Lafayette Parish, LA?
Lafayette Parish is in Zone 9a with an average last frost of February 13. Plan your Mitsuba planting based on this frost date — see the calendar above for exact timing.
What planting zone is Lafayette Parish, LA?
Lafayette Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 5.
Plan Your Garden with Confidence
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