Vinca plants are very easy to care for; they will tolerate drought, shade and heat well. They don't require a lot of specialized care, and will thrive if you follow some general guidelines for water, sun and fertilizer. Vincas can grow either outdoors or indoors. There are two main kinds of vinca: vinca minor, the perennial flowering groundcover, and vinca major, the annual vine.
Caring for Vincas
Choose a site where they will grow well. Plant vincas in shady spots or in barren or sandy areas, since they tolerate poor soil well also. If you don't need them for that purpose, plant them in well-drained, loose soil in partial shade for best growth.
Add about an inch of bark chips, mulch or dry compost to keep trailing leaves and runners off the ground. This will help prevent pests and diseases later, and also helps keep down weeds and conserves water.
Fertilize vincas with a small amount of blended 10-10-10 fertilizer once a month, or less frequently if you want to limit their growth. Use a granular or water-soluble fertilizer for easiest feeding.Don't overwater to avoid rot problems. Drip irrigation or soaker hoses are ideal for watering vinca.
For regular care, water occasionally. Longstanding vinca minor beds need little to no watering at all, while vinca major is less drought-tolerant and needs slightly more frequent watering. Vinca major and vinca minor both will tell you when they need water when their leaves begin to wilt.
Control either vinca by mowing or cutting it back once a year, to keep it free from disease and growing healthily. The cutback helps the plants add new growth afterward. After cutting or mowing, fertilize and water.