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When to Plant Tarragon in Hall County, TX

French tarragon is a perennial herb with slender leaves and a distinctive anise-like flavor essential in French cooking. It does not produce viable seed and must be propagated vegetatively.

Hall County, Texas is in USDA Zone 7a. The average last spring frost is March 31 and the first fall frost is November 6, giving you a growing season of approximately 220 days.

At an elevation of 1,213 feet, Hall County receives approximately 52.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94ยฐF, providing good warmth for Tarragon during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Tarragon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tarragon root diseases.

Hall County, TX (Zone 7a) Long season
220 days
Last Spring Frost March 31
220 growing days
First Fall Frost November 6

Hall County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (82 days to spare)
Transplant: Mar 30 🍅 Harvest: Jun 1 – Aug 10
Recommended (50%) ✓ Fits season (80 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 9 – Aug 18
Safe Start (90%) ✓ Fits season (80 days to spare)
Transplant: Apr 22 🍅 Harvest: Jun 24 – Sep 2

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.

Soil Compatibility in Hall County

How your county's soil matches Tarragon's growing requirements.

Soil pH

Your soil pH (7.4โ€“8.8) is more alkaline than Tarragon prefers (6.0โ€“7.5). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Hall County warms quickly in spring but drains fast. Tarragon will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Tarragon.

How to Plant Tarragon

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Tarragon

4
successive plantings in your 220-day season

Sow every 6.9 weeks. Last sowing by Aug 08 to harvest before frost.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Tarragon needs ~1,538 GDD — county provides 4,510 GDD Excellent fit

Tarragon Planting Timeline โ€” Hall County, TX

Tarragon Planting Calendar

Activity When Date Range
Transplant Outdoors April 7 Apr 7 โ€“ Apr 21
Harvest June 9 Jun 9 โ€“ Aug 18

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.4"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7a

๐Ÿ“† Growing Season

220 days in Hall County

Growing Tips for Tarragon in Hall County

Direct sow Tarragon outdoors after March 31 in Hall County when soil has warmed and frost danger has passed.

Sandy soil in Hall County dries quickly โ€” mulch Tarragon with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for Tarragon in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Purchase plants or divisions as French tarragon does not grow true from seed. Plant in well-drained soil. Divide every 3-4 years to maintain vigor. Harvest tips regularly for best flavor.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Tarragon in Hall County, TX?

Hall County is in Zone 7a with an average last frost of March 31. Plan your Tarragon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hall County, TX?

Hall County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is March 31 and first fall frost is November 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hall County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Hall County, TX. Local conditions may vary. Last updated: April 2026.