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When to Plant Mitsuba in Tyrrell County, NC

Tyrrell County, North Carolina Zone 8b May

Top priorities for Tyrrell County, North Carolina gardeners in May

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 26
Avg. first frost November 15
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Collect mitsuba at their peak

    If you can't use it all right away, check the food-preservation section of your planner.

Coming up in June — start thinking about
  • First harvests: mitsuba

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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.

Tyrrell County, North Carolina is in USDA Zone 8b. The average last spring frost is March 26 and the first fall frost is November 15, giving you a growing season of approximately 234 days.

At an elevation of 140 feet, Tyrrell County receives approximately 50.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°F, so Mitsuba may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Mitsuba, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Mitsuba root diseases.

Tyrrell County, NC (Zone 8b) Long season
234 days
Last Spring Frost March 26
234 growing days
First Fall Frost November 15

Tyrrell County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (130 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: May 6 – Jul 1
Recommended (50%) ✓ Fits season (129 days to spare)
Start indoors: Feb 19 Transplant: Mar 19 🍅 Harvest: May 14 – Jul 9
Safe Start (90%) ✓ Fits season (128 days to spare)
Start indoors: Mar 6 Transplant: Apr 3 🍅 Harvest: May 29 – Jul 24

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 Tyrrell County

How your county's soil matches Mitsuba's growing requirements.

Soil pH

Your soil pH (5.4–6.3) is more acidic than Mitsuba prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Tyrrell County is excellent for Mitsuba — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Mitsuba.

How to Plant Mitsuba

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Mitsuba

5
successive plantings in your 234-day season

Sow every 5.7 weeks. Last sowing by Sep 06 to harvest before frost.

For a dedicated fall crop, sow by Sep 06.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 199 gal / 100 sq ft

Monthly Watering Guide for Mitsuba

Mitsuba needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Mitsuba Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 4.3" 4.4" 0" ✅ Rainfall sufficient
Apr 4.3" 3.7" 0.6" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.8" 0" ✅ Rainfall sufficient
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 4.4" 0" ✅ Rainfall sufficient
Oct 4.3" 3.5" 0.8" 💧 Light watering
Nov 4.3" 3.4" 0.9" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Tyrrell County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Mitsuba 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.

Mitsuba needs ~1,320 GDD — county provides 5,148 GDD Excellent fit

Mitsuba Planting Timeline — Tyrrell County, NC

Mitsuba Planting Calendar

Activity When Date Range
Start Indoors February 19 Feb 19 – Mar 5
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 12 Mar 12 – Apr 2
Harvest May 14 May 14 – Jul 9
Fall Sowing September 6 Sep 6 – Sep 20

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

234 days in Tyrrell County

Growing Tips for Mitsuba in Tyrrell County

Direct sow Mitsuba outdoors after March 26 in Tyrrell County when soil has warmed and frost danger has passed.

With Tyrrell County's clay soil (28% clay), work in 3-4 inches of compost before planting Mitsuba. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 96°F in Tyrrell County, provide afternoon shade for Mitsuba and water deeply in the morning.

Common pests for Mitsuba in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

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 →

Frequently Asked Questions

When should I plant Mitsuba in Tyrrell County, NC?

Tyrrell County is in Zone 8b with an average last frost of March 26. Plan your Mitsuba planting based on this frost date — see the calendar above for exact timing.

What planting zone is Tyrrell County, NC?

Tyrrell County, North Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 26 and first fall frost is November 15.

🌱

Your Tyrrell County Garden Planner — Free

A 24-page printable planner built for Tyrrell County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Tyrrell County, NC. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.