Blog

When to Plant Tarragon in Edgefield County, SC

Edgefield County, South Carolina Zone 8a May

Your May game plan for Edgefield County, South Carolina

May is a pivotal month for Edgefield County, South Carolina gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 25
Avg. first frost November 7
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
To set up a strong June, finish these tasks
  • First harvests: tarragon

Instant PDF download. No spam, unsubscribe any time.

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.

Edgefield County, South Carolina is in USDA Zone 8a. The average last spring frost is March 25 and the first fall frost is November 7, giving you a growing season of approximately 227 days.

At an elevation of 182 feet, Edgefield County receives approximately 55 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Tarragon during the growing season. Sandy soil warms quickly in spring — great for early planting — 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.

Edgefield County, SC (Zone 8a) Long season
227 days
Last Spring Frost March 25
227 growing days
First Fall Frost November 7
Share this guide:

Edgefield County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.9-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (87 days to spare)
Transplant: Mar 26 🍅 Harvest: May 28 – Aug 6
Recommended (50%) ✓ Fits season (87 days to spare)
Transplant: Apr 1 🍅 Harvest: Jun 3 – Aug 12
Safe Start (90%) ✓ Fits season (81 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 25 – Sep 3

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 Edgefield County

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

Soil pH

Your soil pH (4.9–6.3) is more acidic than Tarragon prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Tarragon.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Tarragon.

How to Plant Tarragon

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

Succession Planting Tarragon

4
successive plantings in your 227-day season

Sow every 6.9 weeks. Last sowing by Aug 09 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

Monthly Watering Guide for Tarragon

Tarragon needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Tarragon Needs Rainfall You Supplement Action
Jan 4.3" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 1.7" 4.6" 0" ✅ Rainfall sufficient
Apr 1.7" 4.1" 0" ✅ Rainfall sufficient
May 1.7" 4.4" 0" ✅ Rainfall sufficient
Jun 1.7" 5.5" 0" ✅ Rainfall sufficient
Jul 1.7" 5.2" 0" ✅ Rainfall sufficient
Aug 1.7" 5.5" 0" ✅ Rainfall sufficient
Sep 1.7" 3.8" 0" ✅ Rainfall sufficient
Oct 1.7" 4" 0" ✅ Rainfall sufficient
Nov 1.7" 4.7" 0" ✅ Rainfall sufficient
Dec 4.2" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Edgefield County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Tarragon Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Tarragon needs ~1,369 GDD — county provides 4,142 GDD Excellent fit

Tarragon Planting Timeline — Edgefield County, SC

Tarragon Planting Calendar

Activity When Date Range
Transplant Outdoors April 1 Apr 1 – Apr 15
Harvest June 3 Jun 3 – Aug 12

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May
June Harvest
July Harvest
August Harvest
September
October
November
December
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8a

📆 Growing Season

227 days in Edgefield County

Growing Tips for Tarragon in Edgefield County

Direct sow Tarragon outdoors after March 25 in Edgefield County when soil has warmed and frost danger has passed.

Sandy soil in Edgefield County dries quickly — 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Tarragon in Edgefield County, SC?

Edgefield County is in Zone 8a with an average last frost of March 25. Plan your Tarragon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Edgefield County, SC?

Edgefield County, South Carolina is in USDA Hardiness Zone 8a. The average last spring frost is March 25 and first fall frost is November 7.

🌱

Your Edgefield County Garden Planner — Free

A 24-page printable planner built for Edgefield County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.