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When to Plant Tatsoi in Clay County, MS

Clay County, Mississippi Zone 8a May

May in the garden — Clay County, Mississippi

Your garden in Clay County, Mississippi is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 23
Avg. first frost November 7
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs
  1. It's harvest week for tatsoi

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

A few tasks this May that'll pay off in June
  • First harvests: tatsoi

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Tatsoi is a compact Asian green forming beautiful rosettes of dark, spoon-shaped leaves with a mild mustard flavor. It is extremely cold-hardy and versatile.

Clay County, Mississippi is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 7, giving you a growing season of approximately 229 days.

At an elevation of 456 feet, Clay County receives approximately 61.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88°F, providing good warmth for Tatsoi during the growing season. Clay soil retains moisture well for Tatsoi, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tatsoi root diseases.

Clay County, MS (Zone 8a) Long season
229 days
Last Spring Frost March 23
229 growing days
First Fall Frost November 7
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Clay County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (160 days to spare)
Start indoors: Feb 8 Transplant: Mar 15 🍅 Harvest: Apr 19 – May 24
Recommended (50%) ✓ Fits season (159 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Apr 27 – Jun 1
Safe Start (90%) ✓ Fits season (158 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: May 17 – Jun 21

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 Clay County

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

Soil pH

Your soil pH (5.6–6.7) overlaps with Tatsoi's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Tatsoi.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Tatsoi.

How to Plant Tatsoi

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Tatsoi

7
successive plantings in your 229-day season

Sow every 4 weeks. Last sowing by Sep 18 to harvest before frost.

For a dedicated fall crop, sow by Aug 29.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Tatsoi

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

Month Tatsoi Needs Rainfall You Supplement Action
Jan 5.4" 0" ❄️ Dormant
Feb 4.8" 0" ❄️ Dormant
Mar 4.3" 6.4" 0" ✅ Rainfall sufficient
Apr 4.3" 5.3" 0" ✅ Rainfall sufficient
May 4.3" 4.6" 0" ✅ Rainfall sufficient
Jun 4.3" 5.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.8" 0" ✅ Rainfall sufficient
Aug 4.3" 6.4" 0" ✅ Rainfall sufficient
Sep 4.3" 4.9" 0" ✅ Rainfall sufficient
Oct 4.3" 3.8" 0.5" 💧 Light watering
Nov 4.3" 4.5" 0" ✅ Rainfall sufficient
Dec 4.4" 0" ❄️ Dormant

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

Tatsoi 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.

Tatsoi needs ~680 GDD — county provides 3,664 GDD Excellent fit

Tatsoi Planting Timeline — Clay County, MS

Tatsoi Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 – Mar 2
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 9 Mar 9 – Mar 30
Harvest April 27 Apr 27 – Jun 1
Fall Sowing August 29 Aug 29 – Sep 12

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

229 days in Clay County

Growing Tips for Tatsoi in Clay County

Direct sow Tatsoi outdoors after March 23 in Clay County when soil has warmed and frost danger has passed.

With Clay County's clay soil (29% clay), work in 3-4 inches of compost before planting Tatsoi. Avoid tilling when soil is wet to prevent compaction.

Your generous 229.0-day season in Clay County allows multiple plantings of Tatsoi. Sow every 17.0 days for continuous harvest.

Common pests for Tatsoi 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. Tatsoi tolerates frost down to 15F. Harvest outer leaves or cut whole rosettes. Excellent in salads, stir-fries, or lightly wilted.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Tatsoi in Clay County, MS?

Clay County is in Zone 8a with an average last frost of March 23. Plan your Tatsoi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Clay County, MS?

Clay County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 7.

🌱

Your Clay County Garden Planner — Free

A 24-page printable planner built for Clay 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 Clay County, MS. 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.