When to plant Vinca (Annual) in Lawrence County, AR
Lawrence County's 222-day season only supports one Vinca (Annual) planting per year. Sow between March 26 and April 9 for the best chance at full maturity before November 3.
When to Plant Vinca (Annual) in Lawrence County, AR
Annual vinca (Catharanthus roseus), also called Madagascar periwinkle, is one of the most heat- and drought-tolerant bedding plants available. Glossy foliage stays attractive all season while cheerful pinwheel blooms continue without deadheading. A top performer in hot, humid Southern summers where impatiens and begonias struggle. Self-cleaning; requires little maintenance once established.
Lawrence County, Arkansas is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 3, giving you a growing season of approximately 222 days.
At an elevation of 530 feet, Lawrence County receives approximately 51.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Vinca (Annual) during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Vinca (Annual) root diseases.
Lawrence County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Vinca (Annual) Planting Timeline — Lawrence County, AR
Vinca (Annual) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 15 | Jan 15 – Jan 29 |
| Transplant Outdoors | March 26 | Mar 26 – Apr 9 |
| Bloom | June 4 | Jun 4 – Oct 8 |
Plant 0.1" deep · 10" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | — |
| March | Transplant Outdoors |
| April | Transplant Outdoors |
| May | — |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 7b
📆 Growing Season
222 days in Lawrence County
Growing Tips for Lawrence County
Start seeds indoors 10–12 weeks before last frost — germination requires warm soil (75–80°F) and darkness. Do not cover seeds deeply; they need just a light dusting. Direct sowing is rarely practiced due to slow seedling establishment. Transplant after soil warms and frost danger has passed. Excellent drought tolerance once established; avoid overwatering. Performs best in well-drained beds or containers in full sun.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Vinca (Annual) in Other Locations
Frequently Asked Questions
When should I plant Vinca (Annual) in Lawrence County, AR?
Lawrence County is in Zone 7b with an average last frost of March 26. Plan your Vinca (Annual) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Lawrence County, AR?
Lawrence County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 26 and first fall frost is November 3.
When should I plant Vinca (Annual) in Lawrence County, AR?
In Lawrence County, AR, plant Vinca (Annual) after the last frost (around March 26) and before the first frost (around November 3). Best results when soil holds above 50°F.
What growing zone is Lawrence County, AR for Vinca (Annual)?
Lawrence County sits in USDA Zone 7b. Vinca (Annual) grows reliably in zones 3a through 11b, so it's a good fit here.
Can Vinca (Annual) grow in Lawrence County's climate?
Yes — Vinca (Annual) grows well in Lawrence County's temperate climate. Lawrence County averages a 222-day frost-free season, with last frost around March 26 and first frost around November 3.
Your Lawrence County Garden Planner — Free
A 22-page printable planner built for Lawrence 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.