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When to plant Mitsuba in Henry County, GA

In Zone 8a (Henry County), direct-sow Mitsuba between March 11 and April 1 for spring, after the March 25 last-frost mark. A second sowing from August 30 to September 13 extends the harvest into fall.

When to Plant Mitsuba in Henry County, GA

Henry County, Georgia Zone 8a July

July to-do list for Henry County, Georgia

July is a pivotal month for Henry County, Georgia gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 25
Avg. first frost November 8
Soil temp (4") 86°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Basket week: mitsuba

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

August will be here before you know it — start on
  • Fall sowing: 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.

Henry County, Georgia is in USDA Zone 8a. The average last spring frost is March 25 and the first fall frost is November 8, giving you a growing season of approximately 228 days.

At an elevation of 379 feet, Henry County receives approximately 52.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93°F, providing good warmth for Mitsuba during the growing season. 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.

Henry County, GA (Zone 8a) Long season
228 days
Last Spring Frost March 25
228 growing days
First Fall Frost November 8

Henry County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Mitsuba Planting Risk Windows

Early Start (70% safe) ✓ Fits season (126 days to spare)
Start indoors: Feb 8 Transplant: Mar 8 🍅 Harvest: May 3 – Jun 28
Recommended (50%) ✓ Fits season (123 days to spare)
Start indoors: Feb 18 Transplant: Mar 18 🍅 Harvest: May 13 – Jul 8
Safe Start (90%) ✓ Fits season (122 days to spare)
Start indoors: Mar 13 Transplant: Apr 10 🍅 Harvest: Jun 5 – Jul 31

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 Henry County

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

Soil pH

Your soil pH (5.6–6.7) overlaps with Mitsuba's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). 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 228-day season

Sow every 5.7 weeks. Last sowing by Aug 30 to harvest before frost.

For a dedicated fall crop, sow by Aug 30.

Mitsuba Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 67 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 4.7" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 4.3" 5.4" 0" ✅ Rainfall sufficient
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 5.5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.1" 0" ✅ Rainfall sufficient
Sep 4.3" 4.4" 0" ✅ Rainfall sufficient
Oct 4.3" 3.5" 0.8" 💧 Light watering
Nov 4.3" 4.2" 0.1" 💧 Light watering
Dec 4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Henry 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 ~1,185 GDD — county provides 4,503 GDD Excellent fit

Mitsuba Planting Timeline — Henry County, GA

Mitsuba Planting Calendar

Activity When Date Range
Start Indoors February 18 Feb 18 – Mar 4
Transplant Outdoors March 18 Mar 18 – Apr 1
Direct Sow March 11 Mar 11 – Apr 1
Harvest May 13 May 13 – Jul 8
Fall Sowing August 30 Aug 30 – Sep 13

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 Fall Sowing
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: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

228 days in Henry County

Growing Tips for Mitsuba in Henry County

Direct sow Mitsuba outdoors after March 25 in Henry County when soil has warmed and frost danger has passed.

With Henry County's clay soil (30% clay), work in 3-4 inches of compost before planting Mitsuba. Avoid tilling when soil is wet to prevent compaction.

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 Henry County, GA?

Henry County is in Zone 8a with an average last frost of March 25. Plan your Mitsuba planting based on this frost date — see the calendar above for exact timing.

What planting zone is Henry County, GA?

Henry County, Georgia is in USDA Hardiness Zone 8a. The average last spring frost is March 25 and first fall frost is November 8.

When should I plant Mitsuba in Henry County, GA?

In Henry County, GA, plant Mitsuba after the last frost (around March 25) and before the first frost (around November 8). Best results when soil holds above 50°F.

What growing zone is Henry County, GA for Mitsuba?

Henry County sits in USDA Zone 8a. Mitsuba grows reliably in zones 4a through 9b, so it's a good fit here.

Can Mitsuba grow in Henry County's climate?

Yes — Mitsuba grows well in Henry County's temperate climate. Henry County averages a 228-day frost-free season, with last frost around March 25 and first frost around November 8.

🌱

Your Henry County Garden Planner — Free

A 22-page printable planner built for Henry 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.

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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 Henry County, GA. Local conditions may vary. Last updated: July 2026.

Sources & credits

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