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When to plant Calendula in Houston County, GA

Houston County's climate puts the Calendula spring window between January 19 and February 9. most warm-season crops establish quickly once soil holds above 60°F. A second sowing from September 6 to September 20 extends the harvest into fall.

When to Plant Calendula in Houston County, GA

Houston County, Georgia Zone 8b July

July in Houston County, Georgia — your action list

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

Avg. last frost March 9
Avg. first frost November 15
Soil temp (4") 91°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Bring in the calendula

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

To set up a strong August, finish these tasks
  • First harvests: calendula

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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.

Houston County, Georgia is in USDA Zone 8b. The average last spring frost is March 9 and the first fall frost is November 15, giving you a growing season of approximately 251 days.

At an elevation of 484 feet, Houston County receives approximately 53.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93°F, providing good warmth for Calendula during the growing season. 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
Houston County, GA (Zone 8b) Long season
251 days
Last Spring Frost March 9
251 growing days
First Fall Frost November 15

Houston County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.3

Drainage

Well Drained

Monthly Watering Guide for Calendula

Calendula needs approximately 1 inches of water per week (4.3" 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 4.4" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" ✅ Rainfall sufficient
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 5.9" 0" ✅ Rainfall sufficient
Aug 4.3" 5.4" 0" ✅ Rainfall sufficient
Sep 4.3" 4" 0.3" 💧 Light watering
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 4.3" 4" 0.3" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

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

Calendula Planting Timeline — Houston County, GA

Calendula Planting Calendar

Activity When Date Range
Transplant Outdoors February 16 Feb 16 – Mar 2
Direct Sow January 19 Jan 19 – Feb 9
Bloom April 6 Apr 6 – Aug 31
Fall Sowing September 6 Sep 6 – Sep 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Low — drought tolerant

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.5–7 · Your soil: N/A

🗺️ USDA Zone

Zone 8b

📆 Growing Season

251 days in Houston County

Growing Tips for Houston County

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 Houston County, GA?

Houston County is in Zone 8b with an average last frost of March 9. Plan your Calendula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Houston County, GA?

Houston County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 9 and first fall frost is November 15.

When should I plant Calendula in Houston County, GA?

In Houston County, GA, plant Calendula after the last frost (around March 9) and before the first frost (around November 15). Best results when soil holds above 50°F.

What growing zone is Houston County, GA for Calendula?

Houston 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 Houston County's climate?

Yes — Calendula grows well in Houston County's temperate climate. Houston County averages a 251-day frost-free season, with last frost around March 9 and first frost around November 15.

🌱

Your Houston County Garden Planner — Free

A 22-page printable planner built for Houston 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 Houston County, GA. Local conditions may vary. Last updated: July 2026.

Sources & credits

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