When to Plant Komatsuna in Concordia Parish, LA
This month in Concordia Parish, Louisiana
Your garden in Concordia Parish, Louisiana is working on a schedule, even when you're not. Here's where you should be this May.
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Start harvesting komatsuna
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
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.
Concordia Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 8 and the first fall frost is November 15, giving you a growing season of approximately 252 days.
At an elevation of 377 feet, Concordia Parish receives approximately 60.5 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Komatsuna during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Komatsuna root diseases.
Concordia Parish Soil Profile
Soil Type
Loam
Soil pH
6-7.3
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.
Soil Compatibility in Concordia Parish
How your county's soil matches Komatsuna's growing requirements.
Soil pH
Your soil pH (6.0–7.3) is within Komatsuna's preferred range (6.0–7.5).
Soil Texture
The loam soil in Concordia Parish is excellent for Komatsuna — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Komatsuna.
How to Plant Komatsuna
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Komatsuna
Sow every 4 weeks. Last sowing by Sep 26 to harvest before frost.
For a dedicated fall crop, sow by Sep 20.
Plant Water Budget
Monthly Watering Guide for Komatsuna
Komatsuna needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Komatsuna Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 5.1" | 0" | ❄️ Dormant |
| Feb | — | 5.6" | 0" | ❄️ Dormant |
| Mar | 4.3" | 5.9" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 5.1" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.8" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 6.1" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Nov | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Concordia Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Komatsuna Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Komatsuna Planting Timeline — Concordia Parish, LA
Komatsuna Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 8 | Feb 8 – Feb 22 |
| Transplant Outdoors | March 8 | Mar 8 – Mar 22 |
| Direct Sow | February 15 | Feb 15 – Mar 8 |
| Harvest | April 12 | Apr 12 – May 17 |
| Fall Sowing | September 20 | Sep 20 – Oct 4 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
35–50 days
🧪 Soil pH
Needs 6–7.5 · Your soil: ideal
🗺️ USDA Zone
Zone 9a
📆 Growing Season
252 days in Concordia Parish
Growing Tips for Komatsuna in Concordia Parish
Direct sow Komatsuna outdoors after March 08 in Concordia Parish when soil has warmed and frost danger has passed.
Your generous 252.0-day season in Concordia Parish allows multiple plantings of Komatsuna. Sow every 17.0 days for continuous harvest.
Common pests for Komatsuna in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
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 Concordia Parish, LA?
Concordia Parish is in Zone 9a with an average last frost of March 8. Plan your Komatsuna planting based on this frost date — see the calendar above for exact timing.
What planting zone is Concordia Parish, LA?
Concordia Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 8 and first fall frost is November 15.
Your Concordia Parish Garden Planner — Free
A 24-page printable planner built for Concordia Parish (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.