Growing Annual Vinca From Seed: Gathering And Germinating Seeds Of Vinca
Also known as rose periwinkle or Madagascar periwinkle (Catharanthus roseus), annual vinca is a versatile little stunner with shiny green foliage and blooms of pink, white, rose, red, salmon or purple. Although this plant isn’t frost-hardy, you can grow it as a perennial if you live in USDA plant hardiness zones 9 and above. Collecting vinca seeds from mature plants isn’t difficult, but growing annual vinca from seed is a little trickier. Read on to learn how.
How to Gather Vinca Seeds
When collecting vinca seeds, look for long, narrow, green seedpods hidden on the stems beneath blooming flowers. Snip or pinch the pods when the petals drop from the blooms and the pods are turning from yellow to brown. Watch the plant carefully. If you wait too long, the pods will split and you’ll lose the seeds.
Drop the pods into a paper sack and place them in a warm, dry spot. Shake the bag every day or two until the pods are completely dry. You can also drop the pods into a shallow pan and put the pan in a sunny (non-windy) location until the pods are completely dry.
Once the pods are completely dry, open them carefully and remove the tiny black seeds. Place the seeds in a paper envelope and store them in a cool, dry, well-ventilated location until planting time. Freshly harvested seeds usually don’t do well because germinating vinca seeds require a period of dormancy.
When to Plant Annual Vinca Seeds
Plant vinca seeds indoors three to four months before the last frost of the season. Cover the seeds lightly with soil, then lay a damp newspaper over the tray because germinating seeds of vinca require total darkness. Place the seeds where temperatures are around 80 F. (27 C.).
Check the tray daily and remove the newspaper as soon as seedlings emerge – generally two to nine days. At this point, move the seedlings into bright sunlight and room temperature is at least 75 F. (24 C.).
Although annual vinca isn?t frost-hardy, you can grow it as a perennial if you live in USDA plant hardiness zones 9 and above. Collecting vinca seeds from mature plants isn?t difficult, but growing annual vinca from seed is a little trickier. Learn how here.
Adaptable, Versatile and Classically Beautiful
Vinca refers to several groups of plants suitable for a number of applications. Vinca minor seeds (Common Periwinkle, Dwarf Periwinkle) and Vinca major seeds (Big-leaf Periwinkle) both make lovely, evergreen groundcovers. Catharanthus roseus (Madagascar Periwinkle) is an upright, flowering annual perfect for beds and containers. Known for their adaptability and low maintenance, they thrive in heat, humidity, drought, cold and poor soil, flaunting blooms in shades of white, rose, pink and red, and flowering from spring to fall, depending on the variety.
Vinca, also known as periwinkle, is one of the most dependable and long-blooming flowers for your garden. Vinca is able to stand up to all types of adverse conditions and not only survive, but thrive. The brilliant flowers come in a wide range of colors that will fit in any garden. Many of the varieties we offer at Park Seed are prize winners. Start your vinca seeds early and they will be ready to plant outdoors as soon as danger of frost is past. Transplant your seedlings you grew with your periwinkle seeds into a pot to enjoy all summer. Then, bring the whole pot indoors in fall because vinca makes a great house plant as well. You can also use the periwinkle perennial for an evergreen groundcover. There’s nothing vinca can’t do!
Discover Park Seed's wide selection of vinca seeds. This adaptable, versatile and beautiful flower can thrive in any environment and is the perfect addition to your garden.