Blog

When to plant Calendula in Richmond County, GA

Plant Calendula in Richmond County, when soil hits 50°F — usually February 2. Continue planting through February 23 for the spring crop. A second sowing from August 29 to September 12 extends the harvest into fall.

When to Plant Calendula in Richmond County, GA

Richmond County, Georgia Zone 8b July

July to-do list for Richmond County, Georgia

Your garden in Richmond County, Georgia is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost March 23
Avg. first frost November 7
Soil temp (4") 88°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Bring in the calendula

    If you can't use it all right away, check the food-preservation section of your planner.

Looking ahead to August
  • First harvests: calendula
  • Fall sowing: calendula

Instant PDF download. No spam, unsubscribe any time.

Calendula (Calendula officinalis) is a cheerful, edible-flowered cool-season annual valued by herbalists, chefs, and gardeners alike. Its golden-orange petals are used in salves, teas, and as a saffron substitute. Hardy enough to tolerate light frosts, it blooms prolifically in spring and fall, taking a pause during the hottest weeks of summer.

Richmond County, Georgia is in USDA Zone 8b. The average last spring frost is March 23 and the first fall frost is November 7, giving you a growing season of approximately 229 days.

At an elevation of 82 feet, Richmond County receives approximately 52.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°F, so Calendula may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Calendula, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Calendula root diseases.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant Good for cutting Fragrant
Richmond County, GA (Zone 8b) Long season
229 days
Last Spring Frost March 23
229 growing days
First Fall Frost November 7

Richmond County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.4

Drainage

Well Drained

Calendula Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Transplant: Feb 23 🌸 Bloom: Apr 13 – Sep 7
Recommended (50%) ✓ Fits season (54 days to spare)
Transplant: Mar 2 🌸 Bloom: Apr 20 – Sep 14
Safe Start (90%) ✓ Fits season (52 days to spare)
Transplant: Mar 19 🌸 Bloom: May 7 – Oct 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 Richmond County

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

Soil pH

Your soil pH (5.7–6.4) is within Calendula's preferred range (5.5–7.0).

Soil Texture

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

Organic Matter

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

How to Plant Calendula

0.3"
Planting Depth
9"
Between Plants
12"
Between Rows

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

Succession Planting Calendula

5
successive plantings in your 229-day season

Sow every 5.7 weeks. Last sowing by Aug 29 to harvest before frost.

For a dedicated fall crop, sow by Aug 29.

Calendula Water Budget

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

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Calendula

Calendula needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Calendula Needs Rainfall You Supplement Action
Jan 4.8" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 2.2" 5.6" 0" ✅ Rainfall sufficient
Apr 2.2" 3.5" 0" ✅ Rainfall sufficient
May 2.2" 4.2" 0" ✅ Rainfall sufficient
Jun 2.2" 5" 0" ✅ Rainfall sufficient
Jul 2.2" 4.7" 0" ✅ Rainfall sufficient
Aug 2.2" 5.7" 0" ✅ Rainfall sufficient
Sep 2.2" 3.8" 0" ✅ Rainfall sufficient
Oct 2.2" 3.3" 0" ✅ Rainfall sufficient
Nov 2.2" 3.7" 0" ✅ Rainfall sufficient
Dec 4.7" 0" ❄️ Dormant

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

Calendula 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.

Calendula needs ~1,320 GDD — county provides 5,038 GDD Excellent fit

Calendula Planting Timeline — Richmond County, GA

Calendula Planting Calendar

Activity When Date Range
Transplant Outdoors March 2 Mar 2 – Mar 16
Direct Sow February 2 Feb 2 – Feb 23
Bloom April 20 Apr 20 – Sep 14
Fall Sowing August 29 Aug 29 – Sep 12

Plant 0.3" deep · 9" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.5–7 · Your soil: ideal

🗺️ USDA Zone

Zone 8b

📆 Growing Season

229 days in Richmond County

Growing Tips for Calendula in Richmond County

Direct sow Calendula outdoors after March 23 in Richmond County when soil has warmed and frost danger has passed.

With Richmond County's clay soil (26% clay), work in 3-4 inches of compost before planting Calendula. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 96°F in Richmond County, provide afternoon shade for Calendula and water deeply in the morning.

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

General growing tips

Direct-sow in early spring as soon as soil can be worked — seeds germinate in cool soil (50-65°F). In zones 7+, also sow in fall for winter/spring bloom. Deadhead consistently to extend bloom. Plants self-seed readily; save a few spent heads and allow them to drop. Harvest petals when flowers are fully open for best flavor and medicinal value.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Calendula in Richmond County, GA?

Richmond County is in Zone 8b with an average last frost of March 23. Plan your Calendula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Richmond County, GA?

Richmond County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 7.

When should I plant Calendula in Richmond County, GA?

In Richmond County, GA, plant Calendula after the last frost (around March 23) and before the first frost (around November 7). Best results when soil holds above 50°F.

What growing zone is Richmond County, GA for Calendula?

Richmond County sits in USDA Zone 8b. Calendula grows reliably in zones 2a through 11b, so it's a good fit here.

Can Calendula grow in Richmond County's climate?

Yes — Calendula grows well in Richmond County's temperate climate. Richmond County averages a 229-day frost-free season, with last frost around March 23 and first frost around November 7.

🌱

Your Richmond County Garden Planner — Free

A 22-page printable planner built for Richmond 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.

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 Richmond County, GA. Local conditions may vary. Last updated: July 2026.

Sources & credits

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