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When to Plant Sunchoke in Kaufman County, TX

Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.

Kaufman County, Texas is in USDA Zone 8a. The average last spring frost is March 12 and the first fall frost is November 18, giving you a growing season of approximately 251 days.

At an elevation of 144 feet, Kaufman County receives approximately 59.6 inches of rainfall annually with predominantly clay soil. Summer highs average 93ยฐF, providing good warmth for Sunchoke during the growing season. Clay soil retains moisture well for Sunchoke, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunchoke root diseases.

Kaufman County, TX (Zone 8a) Long season
251 days
Last Spring Frost March 12
251 growing days
First Fall Frost November 18

Kaufman County Soil Profile

Soil Type

Clay

Soil pH

6.9-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (68 days to spare)
Transplant: Mar 18 🍅 Harvest: Jul 8 – Sep 2
Recommended (50%) ✓ Fits season (69 days to spare)
Transplant: Mar 26 🍅 Harvest: Jul 16 – Sep 10
Safe Start (90%) ✓ Fits season (56 days to spare)
Transplant: Apr 22 🍅 Harvest: Aug 12 – Oct 7

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
1.0″/week
Watering frequency Only during dry spells
Season total 7 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Sunchoke needs ~2,568 GDD — county provides 4,957 GDD Excellent fit

Sunchoke Planting Timeline โ€” Kaufman County, TX

Sunchoke Planting Calendar

Activity When Date Range
Transplant Outdoors March 26 Mar 26 โ€“ Apr 9
Harvest July 16 Jul 16 โ€“ Sep 10

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Transplant Outdoors
April Transplant Outdoors
May โ€”
June โ€”
July Harvest
August Harvest
September Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

110โ€“150 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 8a

Growing Season

251 days

Growing Tips for Kaufman County

Plant tubers 4 inches deep in early spring. Contain plants with barriers as they spread aggressively. Harvest after frost or leave in ground and dig as needed through winter.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Sunchoke in Kaufman County, TX?

Kaufman County is in Zone 8a with an average last frost of March 12. Plan your Sunchoke planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kaufman County, TX?

Kaufman County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 12 and first fall frost is November 18.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kaufman County gardeners in Zone 8a 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 Kaufman County, TX. Local conditions may vary. Last updated: April 2026.