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When to Plant Dill in Dallas County, TX

Dill is a feathery annual herb with aromatic leaves and seeds. Its fine foliage and umbrella-shaped flower heads attract beneficial insects to the garden.

Dallas County, Texas is in USDA Zone 8a. The average last spring frost is March 8 and the first fall frost is November 20, giving you a growing season of approximately 257 days.

At an elevation of 67 feet, Dallas County receives approximately 65.7 inches of rainfall annually with predominantly clay soil. Summer highs average 97ยฐF, so Dill may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Dill, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Dill root diseases.

Dallas County, TX (Zone 8a) Long season
257 days
Last Spring Frost March 8
257 growing days
First Fall Frost November 20

Dallas County Soil Profile

Soil Type

Clay

Soil pH

6.7-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (156 days to spare)
Start indoors: Jan 25 Transplant: Feb 22 🍅 Harvest: Apr 5 – Jun 7
Recommended (50%) ✓ Fits season (159 days to spare)
Start indoors: Feb 1 Transplant: Mar 1 🍅 Harvest: Apr 12 – Jun 14
Safe Start (90%) ✓ Fits season (144 days to spare)
Start indoors: Mar 5 Transplant: Apr 2 🍅 Harvest: May 14 – Jul 16

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
Dill needs ~1,138 GDD — county provides 5,846 GDD Excellent fit

Dill Planting Timeline โ€” Dallas County, TX

Dill Planting Calendar

Activity When Date Range
Start Indoors February 1 Feb 1 โ€“ Feb 15
Transplant Outdoors March 1 Mar 1 โ€“ Mar 15
Direct Sow February 22 Feb 22 โ€“ Mar 15
Fall Sowing September 11 Sep 11 โ€“ Sep 25
Harvest April 12 Apr 12 โ€“ Jun 14

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

40โ€“60 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 8a

Growing Season

257 days

Growing Tips for Dallas County

Direct sow in spring as dill has a taproot and dislikes transplanting. Succession sow for continuous leaf harvest. Allow some plants to flower for seeds and to attract beneficial insects.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Tomatoes

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Frequently Asked Questions

When should I plant Dill in Dallas County, TX?

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

What planting zone is Dallas County, TX?

Dallas County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 8 and first fall frost is November 20.

๐ŸŒฑ

Plan Your Garden with Confidence

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