When to Plant Calendula in Aransas County, TX
What to do in June
If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.
-
Start harvesting calendula
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
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.
Aransas County, Texas is in USDA Zone 9b. The average last spring frost is February 10 and the first fall frost is December 12, giving you a growing season of approximately 305 days.
At an elevation of 173 feet, Aransas County receives approximately 67.4 inches of rainfall annually with predominantly loam soil. Summer highs average 104°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.
Aransas County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.7
Drainage
Well Drained
Calendula Planting Risk Windows
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 Aransas County
How your county's soil matches Calendula's growing requirements.
Soil pH
Your soil pH (6.7–7.7) is more alkaline than Calendula prefers (5.5–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Aransas County is excellent for Calendula — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Calendula.
How to Plant Calendula
Fall planting: Sow 12 weeks before your first frost date for a fall harvest.
Succession Planting Calendula
Sow every 5.7 weeks. Last sowing by Oct 03 to harvest before frost.
For a dedicated fall crop, sow by Sep 19.
Calendula Water Budget
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 | — | 1.9" | 0" | ❄️ Dormant |
| Feb | 2.2" | 2.4" | 0" | ✅ Rainfall sufficient |
| Mar | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 6.7" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 10.1" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 12" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 8.2" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 8.7" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 5.4" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.9" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 2.2" | 0" | ✅ Rainfall sufficient |
| Dec | 2.2" | 1.7" | 0.5" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Aransas 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 Planting Timeline — Aransas County, TX
Calendula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | January 6 | Jan 6 – Jan 20 |
| Direct Sow | December 9 | Dec 9 – Dec 30 |
| Bloom | February 17 | Feb 17 – Jun 9 |
| Fall Sowing | September 19 | Sep 19 – Oct 3 |
Plant 0.3" deep · 9" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Transplant Outdoors |
| February | Bloom |
| March | Bloom |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | Direct Sow |
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 9b
📆 Growing Season
305 days in Aransas County
Growing Tips for Calendula in Aransas County
Direct sow Calendula outdoors after February 10 in Aransas County when soil has warmed and frost danger has passed.
With summer highs reaching 104°F in Aransas 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 →
Calendula in Other Locations
Frequently Asked Questions
When should I plant Calendula in Aransas County, TX?
Aransas County is in Zone 9b with an average last frost of February 10. Plan your Calendula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Aransas County, TX?
Aransas County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 10 and first fall frost is December 12.
Your Aransas County Garden Planner — Free
A 22-page printable planner built for Aransas County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.