Tips on How to Grow Vinca from Seeds

Germination

• Start Vinca  - sow seeds about 10-12 weeks before the last frost date scheduled in your area.

• Cover seed lightly with growing medium. 2-3 seeds per individual peat or fiber pots. Vinca needs darkness to germinate
• Seed is slow to germinate (10-21 days)  and sensitive to light, best to place seed in cells and press lightly to cover, then place tray inside of black plastic bag, keep at 75-80°F. 
• After seeds germinate place the tray in full bright sunlight until the 3-4 true leaves have developed. 
• Transplant to cell packs or larger containers after true leaves appear. Harden off and transplant outside after the last frost.
• Vinca  needs 8-10 hours of direct sunlight every day. In southwest desert climates and the hottest regions of the deep south, afternoon shade is preferred. Vinca plants grow best in well-drained soil with average to low fertility. Vinca can tolerate drought, and high heat. In hot, humid climates 'Cora,' 'Solar,' and 'Viper,' vincas perform best. 
• Vinca flowers attract many butterflies. Can be deer and rabbit resistant in most areas.