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When to Plant Tatsoi in Anne Arundel County, MD

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.

Anne Arundel County, Maryland is in USDA Zone 7a. The average last spring frost is April 3 and the first fall frost is November 3, giving you a growing season of approximately 214 days.

At an elevation of 435 feet, Anne Arundel County receives approximately 41 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93ยฐF, providing good warmth for Tatsoi during the growing season.

Anne Arundel County, MD (Zone 7a) Long season
214 days
Last Spring Frost April 3
214 growing days
First Fall Frost November 3

Anne Arundel County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (145 days to spare)
Start indoors: Feb 22 Transplant: Mar 29 🍅 Harvest: May 3 – Jun 7
Recommended (50%) ✓ Fits season (144 days to spare)
Start indoors: Feb 27 Transplant: Apr 3 🍅 Harvest: May 8 – Jun 12
Safe Start (90%) ✓ Fits season (145 days to spare)
Start indoors: Mar 14 Transplant: Apr 18 🍅 Harvest: May 23 – Jun 27

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 372 gal / 100 sq ft
Tatsoi needs ~839 GDD — county provides 4,226 GDD Excellent fit

Tatsoi Planting Timeline โ€” Anne Arundel County, MD

Tatsoi Planting Calendar

Activity When Date Range
Start Indoors February 27 Feb 27 โ€“ Mar 13
Transplant Outdoors April 3 Apr 3 โ€“ Apr 17
Direct Sow March 20 Mar 20 โ€“ Apr 10
Fall Sowing August 25 Aug 25 โ€“ Sep 8
Harvest May 8 May 8 โ€“ Jun 12

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

35โ€“50 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7a

Growing Season

214 days

Growing Tips for Anne Arundel County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Tatsoi in Anne Arundel County, MD?

Anne Arundel County is in Zone 7a with an average last frost of April 3. Plan your Tatsoi planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Anne Arundel County, MD?

Anne Arundel County, Maryland is in USDA Hardiness Zone 7a. The average last spring frost is April 3 and first fall frost is November 3.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Anne Arundel County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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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 Anne Arundel County, MD. Local conditions may vary. Last updated: April 2026.