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When to Plant Tatsoi in Chambers County, TX

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.

Chambers County, Texas is in USDA Zone 9a. The average last spring frost is February 12 and the first fall frost is December 6, giving you a growing season of approximately 297 days.

At an elevation of 1 feet, Chambers County receives approximately 66.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99ยฐF, so Tatsoi may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Tatsoi will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tatsoi root diseases.

Chambers County, TX (Zone 9a) Year-round
297 days
Last Spring Frost February 12
297 growing days
First Fall Frost December 6

Chambers County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (238 days to spare)
Start indoors: Dec 27 Transplant: Jan 24 🍅 Harvest: Feb 28 – Apr 4
Recommended (50%) ✓ Fits season (227 days to spare)
Start indoors: Jan 15 Transplant: Feb 12 🍅 Harvest: Mar 19 – Apr 23
Safe Start (90%) ✓ Fits season (219 days to spare)
Start indoors: Feb 6 Transplant: Mar 6 🍅 Harvest: Apr 10 – May 15

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 181 gal / 100 sq ft
Tatsoi needs ~1,031 GDD — county provides 7,226 GDD Excellent fit

Tatsoi Planting Timeline โ€” Chambers County, TX

Tatsoi Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 โ€“ Jan 29
Transplant Outdoors February 12 Feb 12 โ€“ Feb 26
Direct Sow January 22 Jan 22 โ€“ Feb 12
Fall Sowing October 11 Oct 11 โ€“ Oct 25
Harvest March 19 Mar 19 โ€“ Apr 23

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

Month-by-Month Timeline

MonthActivities
January Start Indoors Direct Sow
February Transplant Outdoors Direct Sow
March Harvest
April Harvest
May โ€”
June โ€”
July โ€”
August โ€”
September โ€”
October Fall Sowing
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 9a

Growing Season

297 days

Growing Tips for Chambers 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 Chambers County, TX?

Chambers County is in Zone 9a with an average last frost of February 12. Plan your Tatsoi planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Chambers County, TX?

Chambers County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 12 and first fall frost is December 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Chambers County gardeners in Zone 9a 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 Chambers County, TX. Local conditions may vary. Last updated: April 2026.