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When to Plant Sunchoke in Floyd 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.

Floyd County, Texas is in USDA Zone 7a. The average last spring frost is April 7 and the first fall frost is November 2, giving you a growing season of approximately 209 days.

At an elevation of 3,882 feet, Floyd County receives approximately 50.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100ยฐF, so Sunchoke may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Sunchoke will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunchoke root diseases.

Floyd County, TX (Zone 7a) Long season
209 days
Last Spring Frost April 7
209 growing days
First Fall Frost November 2

Floyd County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (32 days to spare)
Transplant: Apr 10 🍅 Harvest: Jul 31 – Sep 25
Recommended (50%) ✓ Fits season (27 days to spare)
Transplant: Apr 21 🍅 Harvest: Aug 11 – Oct 6
Safe Start (90%) ✓ Fits season (37 days to spare)
Transplant: Apr 29 🍅 Harvest: Aug 19 – Oct 14

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 Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Sunchoke needs ~3,250 GDD — county provides 5,225 GDD Excellent fit

Sunchoke Planting Timeline โ€” Floyd County, TX

Sunchoke Planting Calendar

Activity When Date Range
Transplant Outdoors April 21 Apr 21 โ€“ May 5
Harvest August 11 Aug 11 โ€“ Oct 6

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May Transplant Outdoors
June โ€”
July โ€”
August Harvest
September Harvest
October Harvest
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 7a

Growing Season

209 days

Growing Tips for Floyd 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 Floyd County, TX?

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

What planting zone is Floyd County, TX?

Floyd County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is April 7 and first fall frost is November 2.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Floyd 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 Floyd County, TX. Local conditions may vary. Last updated: April 2026.