When to plant Vinca (Annual) in Wright County County,
In Wright County County, Vinca (Annual) is a spring-only crop. Plant April 11–April 25 once soil hits 50°F.
When to Plant Vinca (Annual) in Wright County, MO
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.
Wright County, Missouri is in USDA Zone 7a. The average last spring frost is April 11 and the first fall frost is October 22, giving you a growing season of approximately 194 days.
At an elevation of 923 feet, Wright County receives approximately 32.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Vinca (Annual) during the growing season.
Wright County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Vinca (Annual) Planting Timeline — Wright County, MO
Vinca (Annual) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 31 | Jan 31 – Feb 14 |
| Transplant Outdoors | April 11 | Apr 11 – Apr 25 |
| Bloom | June 20 | Jun 20 – Oct 10 |
Plant 0.1" deep · 10" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors |
| March | — |
| 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 7a
📆 Growing Season
194 days in Wright County
Growing Tips for Wright 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 Wright County, MO?
Wright County is in Zone 7a with an average last frost of April 11. Plan your Vinca (Annual) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wright County, MO?
Wright County, Missouri is in USDA Hardiness Zone 7a. The average last spring frost is April 11 and first fall frost is October 22.
When should I plant Vinca (Annual) in Wright County County, ?
In Wright County County, , plant Vinca (Annual) after the last frost (around April 11) and before the first frost (around October 22). Best results when soil holds above 50°F.
What growing zone is Wright County County, for Vinca (Annual)?
Wright County County sits in USDA Zone 7a. Vinca (Annual) grows reliably in zones 3a through 11b, so it's a good fit here.
Can Vinca (Annual) grow in Wright County County's climate?
Yes — Vinca (Annual) grows well in Wright County County's temperate climate. Wright County County averages a 194-day frost-free season, with last frost around April 11 and first frost around October 22.
Your Wright County Garden Planner — Free
A 22-page printable planner built for Wright County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.