When to Plant Mizuna in Beaufort County, SC
Your May planting checklist for Beaufort County, South Carolina
We've pulled the most time-sensitive tasks for Beaufort County, South Carolina this May and put them front and centre. Tackle them in order.
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Collect mizuna at their peak
If you can't use it all right away, check the food-preservation section of your planner.
Mizuna is a mild-flavored Japanese mustard green with feathery, deeply serrated leaves. It is fast-growing and makes an excellent addition to salads and stir-fries.
Beaufort County, South Carolina is in USDA Zone 9a. The average last spring frost is March 13 and the first fall frost is November 15, giving you a growing season of approximately 247 days.
At an elevation of 288 feet, Beaufort County receives approximately 56.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Mizuna may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Mizuna will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mizuna root diseases.
Beaufort County Soil Profile
Soil Type
Sandy Loam
Soil pH
4.9-6.1
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 Beaufort County
How your county's soil matches Mizuna's growing requirements.
Soil pH
Your soil pH (4.9–6.1) is more acidic than Mizuna prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Beaufort County warms quickly in spring but drains fast. Mizuna will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Mizuna.
Organic Matter
Organic matter is low (1.8%). Add 2-3 inches of compost before planting Mizuna.
How to Plant Mizuna
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Mizuna
Sow every 3.4 weeks. Last sowing by Oct 01 to harvest before frost.
For a dedicated fall crop, sow by Sep 20.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Mizuna
Mizuna needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Mizuna Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.6" | 0" | ❄️ Dormant |
| Feb | — | 4.8" | 0" | ❄️ Dormant |
| Mar | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.3" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5.4" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Nov | 4.3" | 4" | 0.3" | 💧 Light watering |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Beaufort County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Mizuna 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.
Mizuna Planting Timeline — Beaufort County, SC
Mizuna Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 13 | Feb 13 – Feb 27 |
| Transplant Outdoors | March 13 | Mar 13 – Mar 27 |
| Direct Sow | February 20 | Feb 20 – Mar 13 |
| Harvest | April 17 | Apr 17 – May 15 |
| 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
30–45 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
247 days in Beaufort County
Growing Tips for Mizuna in Beaufort County
Direct sow Mizuna outdoors after March 13 in Beaufort County when soil has warmed and frost danger has passed.
Sandy soil in Beaufort County dries quickly — mulch Mizuna with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Your generous 247.0-day season in Beaufort County allows multiple plantings of Mizuna. Sow every 15.0 days for continuous harvest.
Common pests for Mizuna 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. Harvest outer leaves as needed for a cut-and-come-again approach. Mizuna is one of the most cold-tolerant Asian greens.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Mizuna in Other Locations
Frequently Asked Questions
When should I plant Mizuna in Beaufort County, SC?
Beaufort County is in Zone 9a with an average last frost of March 13. Plan your Mizuna planting based on this frost date — see the calendar above for exact timing.
What planting zone is Beaufort County, SC?
Beaufort County, South Carolina is in USDA Hardiness Zone 9a. The average last spring frost is March 13 and first fall frost is November 15.
Your Beaufort County Garden Planner — Free
A 24-page printable planner built for Beaufort County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.