When to Plant Komatsuna in Cleveland County, NC
What to do in May
Welcome to May in Zone 8a. These are the moves that will have the biggest impact on your growing season.
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Sow komatsuna in trays indoors
Your window is short. These crops want several weeks of indoor growth before they go outside.
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It's harvest week for komatsuna
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
June prep starts now
- First harvests: komatsuna
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.
Cleveland County, North Carolina is in USDA Zone 8a. The average last spring frost is April 8 and the first fall frost is October 30, giving you a growing season of approximately 205 days.
At an elevation of 613 feet, Cleveland County receives approximately 51.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Komatsuna during the growing season. Clay soil retains moisture well for Komatsuna, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Komatsuna root diseases.
Cleveland County Soil Profile
Soil Type
Clay Loam
Soil pH
5.5-6.7
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 Cleveland County
How your county's soil matches Komatsuna's growing requirements.
Soil pH
Your soil pH (5.5–6.7) overlaps with Komatsuna's range (6.0–7.5), though not a perfect match.
Soil Texture
The clay loam soil in Cleveland County is excellent for Komatsuna — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Komatsuna.
How to Plant Komatsuna
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Komatsuna
Sow every 4 weeks. Last sowing by Sep 10 to harvest before frost.
For a dedicated fall crop, sow by Aug 21.
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 | — | 4.4" | 0" | ❄️ Dormant |
| Feb | — | 3.8" | 0" | ❄️ Dormant |
| Mar | — | 4.7" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| May | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Oct | 4.3" | 3" | 1.3" | 💧 Light watering |
| Nov | — | 3.7" | 0" | ❄️ Dormant |
| Dec | — | 4.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Cleveland County). 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 — Cleveland County, NC
Komatsuna Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 4 | Mar 4 – Mar 18 |
| Transplant Outdoors | April 8 | Apr 8 – Apr 22 |
| Direct Sow | March 25 | Mar 25 – Apr 15 |
| Harvest | May 13 | May 13 – Jun 17 |
| Fall Sowing | August 21 | Aug 21 – Sep 4 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| 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: acceptable
🗺️ USDA Zone
Zone 8a
📆 Growing Season
205 days in Cleveland County
Growing Tips for Komatsuna in Cleveland County
Direct sow Komatsuna outdoors after April 08 in Cleveland County when soil has warmed and frost danger has passed.
With Cleveland County's clay soil (27% clay), work in 3-4 inches of compost before planting Komatsuna. Avoid tilling when soil is wet to prevent compaction.
Your generous 205.0-day season in Cleveland County 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 Cleveland County, NC?
Cleveland County is in Zone 8a with an average last frost of April 8. Plan your Komatsuna planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cleveland County, NC?
Cleveland County, North Carolina is in USDA Hardiness Zone 8a. The average last spring frost is April 8 and first fall frost is October 30.
Your Cleveland County Garden Planner — Free
A 24-page printable planner built for Cleveland County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.