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When to Plant Asparagus in Hartley 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.

Hartley County, Texas is in USDA Zone 6b. The average last spring frost is April 23 and the first fall frost is October 17, giving you a growing season of approximately 177 days.

At an elevation of 4,344 feet, Hartley County receives approximately 46.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96ยฐF, 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.

Hartley County, TX (Zone 6b) Moderate season
177 days
Last Spring Frost April 23
177 growing days
First Fall Frost October 17

Hartley County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.2-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 30
Recommended (50%) ✓ Fits season
Transplant: May 7
Safe Start (90%) ✓ Fits season
Transplant: May 19

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
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 381 gal / 100 sq ft
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Asparagus needs ~20,075 GDD — county provides 3,894 GDD May not mature

Asparagus Planting Timeline โ€” Hartley County, TX

Asparagus Planting Calendar

Activity When Date Range
Transplant Outdoors May 7 May 7 โ€“ May 21

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
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 6b

Growing Season

177 days

Growing Tips for Hartley 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 Hartley County, TX?

Hartley County is in Zone 6b with an average last frost of April 23. Plan your Asparagus planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hartley County, TX?

Hartley County, Texas is in USDA Hardiness Zone 6b. The average last spring frost is April 23 and first fall frost is October 17.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hartley County gardeners in Zone 6b 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 Hartley County, TX. Local conditions may vary. Last updated: April 2026.