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When to Plant Angelica in Barnwell County, SC

Barnwell County, South Carolina Zone 8b May

Your May planting checklist for Barnwell County, South Carolina

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 22
Avg. first frost November 10
Soil temp (4") 72°F
Watering Moderate
Pest pressure High
Daylight 13.7 hrs

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Angelica is a dramatic biennial herb that can reach 6 feet tall with large compound leaves and globe-shaped flower clusters. All parts are edible with a sweet, celery-like flavor.

Barnwell County, South Carolina is in USDA Zone 8b. The average last spring frost is March 22 and the first fall frost is November 10, giving you a growing season of approximately 233 days.

At an elevation of 157 feet, Barnwell County receives approximately 48.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Angelica may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Angelica will need more frequent watering and organic matter to retain nutrients.

Barnwell County, SC (Zone 8b) Long season
233 days
Last Spring Frost March 22
233 growing days
First Fall Frost November 10

Barnwell County Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Start indoors: Feb 4 Transplant: Mar 4
Recommended (50%) ✓ Fits season
Start indoors: Feb 15 Transplant: Mar 15
Safe Start (90%) ✓ Fits season
Start indoors: Mar 4 Transplant: Apr 1

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 Barnwell County

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

Soil pH

Your soil pH (5.0–6.3) overlaps with Angelica's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Angelica.

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Angelica.

How to Plant Angelica

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 368 gal / 100 sq ft

Monthly Watering Guide for Angelica

Angelica needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Angelica Needs Rainfall You Supplement Action
Jan 3.8" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 6.5" 4.5" 2" 💧 Light watering
Apr 6.5" 3.9" 2.6" 💧 Light watering
May 6.5" 3.7" 2.8" 💧 Light watering
Jun 6.5" 4.3" 2.2" 💧 Light watering
Jul 6.5" 5.2" 1.3" 💧 Light watering
Aug 6.5" 5" 1.5" 💧 Light watering
Sep 6.5" 3.9" 2.6" 💧 Light watering
Oct 6.5" 2.8" 3.7" 🚿 Regular watering
Nov 6.5" 3.9" 2.6" 💧 Light watering
Dec 3.3" 0" ❄️ Dormant

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

Angelica 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.

Angelica needs ~12,456 GDD — county provides 5,300 GDD May not mature

Angelica Planting Timeline — Barnwell County, SC

Angelica Planting Calendar

Activity When Date Range
Start Indoors February 15 Feb 15 – Mar 1
Transplant Outdoors March 15 Mar 15 – Mar 29
Direct Sow March 8 Mar 8 – Mar 29
Fall Sowing September 1 Sep 1 – Sep 15

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

365–730 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

233 days in Barnwell County

Growing Tips for Angelica in Barnwell County

Direct sow Angelica outdoors after March 22 in Barnwell County when soil has warmed and frost danger has passed.

Sandy soil in Barnwell County dries quickly — mulch Angelica with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 97°F in Barnwell County, provide afternoon shade for Angelica and water deeply in the morning.

Your 233.0-day growing season in Barnwell County is tight for Angelica (365.0-730.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Angelica in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow fresh seeds in fall for spring germination. Provide rich, moist soil and partial shade. Harvest stems in the second year before flowering for candying or flavoring.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Angelica in Barnwell County, SC?

Barnwell County is in Zone 8b with an average last frost of March 22. Plan your Angelica planting based on this frost date — see the calendar above for exact timing.

What planting zone is Barnwell County, SC?

Barnwell County, South Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 22 and first fall frost is November 10.

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Your Barnwell County Garden Planner — Free

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

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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 Barnwell 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.