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When to Plant Calendula in Real County, TX

Real County, Texas Zone 8b June

What to do in June

Each item below is timed to Real County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 31
Avg. first frost November 8
Soil temp (4") 70°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Start harvesting calendula

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong July, 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.

Real County, Texas is in USDA Zone 8b. The average last spring frost is March 31 and the first fall frost is November 8, giving you a growing season of approximately 222 days.

At an elevation of 4,368 feet, Real County receives approximately 60.8 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Calendula may need afternoon shade and extra watering during peak heat. 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
Real County, TX (Zone 8b) Long season
222 days
Last Spring Frost March 31
222 growing days
First Fall Frost November 8

Real County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.7

Drainage

Well Drained

Calendula Planting Risk Windows

Early Start (70% safe) ✓ Fits season (49 days to spare)
Transplant: Feb 25 🌸 Bloom: Apr 15 – Sep 9
Recommended (50%) ✓ Fits season (47 days to spare)
Transplant: Mar 10 🌸 Bloom: Apr 28 – Sep 22
Safe Start (90%) ✓ Fits season (48 days to spare)
Transplant: Mar 29 🌸 Bloom: May 17 – Oct 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 Real County

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

Soil pH

Your soil pH (6.6–7.7) is more alkaline than Calendula prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Real 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 222-day season

Sow every 5.7 weeks. Last sowing by Aug 30 to harvest before frost.

For a dedicated fall crop, sow by Aug 30.

Calendula Water Budget

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

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 1.5" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 2.2" 3.4" 0" ✅ Rainfall sufficient
Apr 2.2" 6.8" 0" ✅ Rainfall sufficient
May 2.2" 9.8" 0" ✅ Rainfall sufficient
Jun 2.2" 8.8" 0" ✅ Rainfall sufficient
Jul 2.2" 8.5" 0" ✅ Rainfall sufficient
Aug 2.2" 7.7" 0" ✅ Rainfall sufficient
Sep 2.2" 4.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 2.2" 2.1" 0.1" 💧 Light watering
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Real 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 4,884 GDD Excellent fit

Calendula Planting Timeline — Real County, TX

Calendula Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 – Mar 24
Direct Sow February 10 Feb 10 – Mar 3
Bloom April 28 Apr 28 – Sep 22
Fall Sowing August 30 Aug 30 – Sep 13

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

Month-by-Month Timeline

MonthActivities
January
February Direct Sow
March Transplant Outdoors Direct Sow
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: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

222 days in Real County

Growing Tips for Calendula in Real County

Direct sow Calendula outdoors after March 31 in Real County when soil has warmed and frost danger has passed.

With summer highs reaching 96°F in Real 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 Real County, TX?

Real County is in Zone 8b with an average last frost of March 31. Plan your Calendula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Real County, TX?

Real County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 31 and first fall frost is November 8.

🌱

Your Real County Garden Planner — Free

A 22-page printable planner built for Real 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 Real County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

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