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When to Plant Caraway in Spartanburg County, SC

Spartanburg County, South Carolina Zone 7b April

Spartanburg County, South Carolina gardeners: here's your April plan

Here's what deserves your attention in Spartanburg County, South Carolina this month. Everything below is tailored to Zone 7b and timed around your local frost dates.

Avg. last frost April 7
Avg. first frost November 1
Soil temp (4") 57°F
Watering Low
Pest pressure Moderate
Daylight 12.9 hrs
Before May arrives, get these ready
  • Starting indoors: caraway

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Caraway is a biennial herb grown for its distinctive crescent-shaped seeds used in rye bread, sauerkraut, and European cuisine. The leaves and roots are also edible.

Spartanburg County, South Carolina is in USDA Zone 7b. The average last spring frost is April 7 and the first fall frost is November 1, giving you a growing season of approximately 208 days.

At an elevation of 275 feet, Spartanburg County receives approximately 52.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Caraway during the growing season. Clay soil retains moisture well for Caraway, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Caraway root diseases.

Spartanburg County, SC (Zone 7b) Long season
208 days
Last Spring Frost April 7
208 growing days
First Fall Frost November 1
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Spartanburg County Soil Profile

Soil Type

Clay Loam

Soil pH

5.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Start indoors: Feb 21 Transplant: Mar 21
Recommended (50%) ✓ Fits season
Start indoors: Mar 3 Transplant: Mar 31
Safe Start (90%) ✓ Fits season
Start indoors: Mar 14 Transplant: Apr 11

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 Spartanburg County

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

Soil pH

Your soil pH (5.2–6.8) overlaps with Caraway's range (6.0–7.5), though not a perfect match.

Soil Texture

The clay loam soil in Spartanburg County is excellent for Caraway — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Caraway.

How to Plant Caraway

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
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Caraway

Caraway needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Caraway Needs Rainfall You Supplement Action
Jan 4" 0" ❄️ Dormant
Feb 4.9" 0" ❄️ Dormant
Mar 4.9" 0" ❄️ Dormant
Apr 4.3" 4.1" 0.2" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4.6" 0" ✅ Rainfall sufficient
Jul 4.3" 5" 0" ✅ Rainfall sufficient
Aug 4.3" 5" 0" ✅ Rainfall sufficient
Sep 4.3" 4.7" 0" ✅ Rainfall sufficient
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 4.3" 3.6" 0.7" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

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

Caraway 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.

Caraway needs ~7,742 GDD — county provides 3,952 GDD May not mature

Caraway Planting Timeline — Spartanburg County, SC

Caraway Planting Calendar

Activity When Date Range
Start Indoors March 3 Mar 3 – Mar 17
Transplant Outdoors March 31 Mar 31 – Apr 14
Direct Sow March 24 Mar 24 – Apr 14
Fall Sowing August 23 Aug 23 – Sep 6

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

365–450 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

208 days in Spartanburg County

Growing Tips for Caraway in Spartanburg County

Direct sow Caraway outdoors after April 07 in Spartanburg County when soil has warmed and frost danger has passed.

With Spartanburg County's clay soil (34% clay), work in 3-4 inches of compost before planting Caraway. Avoid tilling when soil is wet to prevent compaction.

Your 208.0-day growing season in Spartanburg County is tight for Caraway (365.0-450.0 days to maturity). Start indoors and choose early-maturing varieties.

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

General growing tips

Direct sow in spring or fall. Caraway produces seeds in its second year. Harvest seed heads when they turn brown. The young leaves can be used like parsley.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Caraway in Spartanburg County, SC?

Spartanburg County is in Zone 7b with an average last frost of April 7. Plan your Caraway planting based on this frost date — see the calendar above for exact timing.

What planting zone is Spartanburg County, SC?

Spartanburg County, South Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 7 and first fall frost is November 1.

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Your Spartanburg County Garden Planner — Free

A 24-page printable planner built for Spartanburg County (Zone 7b). 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 Spartanburg County, SC. Local conditions may vary. Last updated: April 2026.

Sources & credits

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