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When to Plant Parsnip in Orange County, TX

Parsnips are a sweet, nutty root vegetable that develops best flavor after exposure to frost. They require a long growing season but reward patient gardeners.

Orange County, Texas is in USDA Zone 9a. The average last spring frost is February 12 and the first fall frost is December 11, giving you a growing season of approximately 302 days.

At an elevation of 231 feet, Orange County receives approximately 63.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 98ยฐF, so Parsnip may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Parsnip will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Parsnip root diseases.

Orange County, TX (Zone 9a) Year-round
302 days
Last Spring Frost February 12
302 growing days
First Fall Frost December 11

Orange County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (168 days to spare)
Transplant: Jan 21 🍅 Harvest: May 6 – Jun 17
Recommended (50%) ✓ Fits season (155 days to spare)
Transplant: Feb 12 🍅 Harvest: May 28 – Jul 9
Safe Start (90%) ✓ Fits season (148 days to spare)
Transplant: Mar 5 🍅 Harvest: Jun 18 – Jul 30

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
0.2″/week
Watering frequency Only during dry spells
Season total 392 gal / 100 sq ft
Drought risk

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

Parsnip needs ~2,702 GDD — county provides 7,120 GDD Excellent fit

Parsnip Planting Timeline โ€” Orange County, TX

Parsnip Planting Calendar

Activity When Date Range
Direct Sow January 22 Jan 22 โ€“ Feb 12
Fall Sowing October 16 Oct 16 โ€“ Oct 30
Harvest May 7 May 7 โ€“ Jun 18

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

100โ€“130 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 9a

Growing Season

302 days

Growing Tips for Orange County

Use only fresh seed as parsnip seed viability declines rapidly. Sow directly in spring in deeply worked soil. Leave roots in the ground through winter for sweetest flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Celery

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Frequently Asked Questions

When should I plant Parsnip in Orange County, TX?

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

What planting zone is Orange County, TX?

Orange County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 12 and first fall frost is December 11.

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Plan Your Garden with Confidence

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