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When to Plant Asparagus in Mitchell County, TX

Asparagus is a long-lived perennial vegetable that produces tender spears each spring for 15-20 years once established. It requires patience but rewards with reliable harvests.

Mitchell County, Texas is in USDA Zone 7b. The average last spring frost is March 28 and the first fall frost is November 11, giving you a growing season of approximately 228 days.

At an elevation of 2,287 feet, Mitchell County receives approximately 60.6 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95ยฐF, so Asparagus may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Asparagus will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Asparagus root diseases.

Mitchell County, TX (Zone 7b) Long season
228 days
Last Spring Frost March 28
228 growing days
First Fall Frost November 11

Mitchell County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 3
Recommended (50%) ✓ Fits season
Transplant: Apr 11
Safe Start (90%) ✓ Fits season
Transplant: Apr 29

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
1.1″/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

Asparagus needs ~19,391 GDD — county provides 4,845 GDD May not mature

Asparagus Planting Timeline โ€” Mitchell County, TX

Asparagus Planting Calendar

Activity When Date Range
Transplant Outdoors April 11 Apr 11 โ€“ Apr 25

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 โ€”
June โ€”
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

730โ€“1095 days

Soil pH

6.5 โ€“ 7.5

USDA Zone

Zone 7b

Growing Season

228 days

Growing Tips for Mitchell County

Plant crowns in deep trenches with compost. Do not harvest spears for the first two years to allow root establishment. Mulch heavily to suppress weeds and retain moisture.

Companion Planting

Good Companions

Avoid Planting Near

  • Garlic
  • Onion

Level Up Your Garden

Frequently Asked Questions

When should I plant Asparagus in Mitchell County, TX?

Mitchell County is in Zone 7b with an average last frost of March 28. Plan your Asparagus planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Mitchell County, TX?

Mitchell County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 28 and first fall frost is November 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Mitchell County gardeners in Zone 7b 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 Mitchell County, TX. Local conditions may vary. Last updated: April 2026.