When to plant Vinca (Annual) in Worcester County, MD
Worcester County's 201-day season only supports one Vinca (Annual) planting per year. Sow between April 12 and April 26 for the best chance at full maturity before October 30.
When to Plant Vinca (Annual) in Worcester County, MD
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.
Worcester County, Maryland is in USDA Zone 7b. The average last spring frost is April 12 and the first fall frost is October 30, giving you a growing season of approximately 201 days.
At an elevation of 633 feet, Worcester County receives approximately 41.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Vinca (Annual) during the growing season.
Worcester County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Vinca (Annual) Planting Timeline — Worcester County, MD
Vinca (Annual) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 1 | Feb 1 – Feb 15 |
| Transplant Outdoors | April 12 | Apr 12 – Apr 26 |
| Bloom | June 21 | Jun 21 – Oct 25 |
Plant 0.1" deep · 10" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| 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 7b
📆 Growing Season
201 days in Worcester County
Growing Tips for Worcester 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 Worcester County, MD?
Worcester County is in Zone 7b with an average last frost of April 12. Plan your Vinca (Annual) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Worcester County, MD?
Worcester County, Maryland is in USDA Hardiness Zone 7b. The average last spring frost is April 12 and first fall frost is October 30.
When should I plant Vinca (Annual) in Worcester County, MD?
In Worcester County, MD, plant Vinca (Annual) after the last frost (around April 12) and before the first frost (around October 30). Best results when soil holds above 50°F.
What growing zone is Worcester County, MD for Vinca (Annual)?
Worcester 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 Worcester County's climate?
Yes — Vinca (Annual) grows well in Worcester County's temperate climate. Worcester County averages a 201-day frost-free season, with last frost around April 12 and first frost around October 30.
Your Worcester County Garden Planner — Free
A 22-page printable planner built for Worcester 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.