When to plant Calendula in Boone County, AR
For Calendula in Boone County, the safe spring window opens around March 1 and closes around March 22. Last expected frost is April 5, first fall frost October 27, giving a 205-day growing season. A second sowing from September 1 to September 15 extends the harvest into fall.
When to Plant Calendula in Boone County, AR
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.
Boone County, Arkansas is in USDA Zone 7b. The average last spring frost is April 5 and the first fall frost is October 27, giving you a growing season of approximately 205 days.
At an elevation of 844 feet, Boone County receives approximately 52.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Calendula during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Calendula root diseases.
Boone County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Calendula Planting Timeline — Boone County, AR
Calendula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 22 | Feb 22 – Mar 8 |
| Transplant Outdoors | April 5 | Apr 5 – Apr 19 |
| Direct Sow | March 1 | Mar 1 – Mar 22 |
| Bloom | May 24 | May 24 – Sep 20 |
| Fall Sowing | September 1 | Sep 1 – Sep 15 |
Plant 0.3" deep · 9" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Fall Sowing Bloom |
| 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 7b
📆 Growing Season
205 days in Boone County
Growing Tips for Boone 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 →
Calendula in Other Locations
Frequently Asked Questions
When should I plant Calendula in Boone County, AR?
Boone County is in Zone 7b with an average last frost of April 5. Plan your Calendula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Boone County, AR?
Boone County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is April 5 and first fall frost is October 27.
When should I plant Calendula in Boone County, AR?
In Boone County, AR, plant Calendula after the last frost (around April 5) and before the first frost (around October 27). Best results when soil holds above 50°F.
What growing zone is Boone County, AR for Calendula?
Boone County sits in USDA Zone 7b. Calendula grows reliably in zones 2a through 11b, so it's a good fit here.
Can Calendula grow in Boone County's climate?
Yes — Calendula grows well in Boone County's temperate climate. Boone County averages a 205-day frost-free season, with last frost around April 5 and first frost around October 27.
Your Boone County Garden Planner — Free
A 22-page printable planner built for Boone 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.