Periwinkle is one of the most common Plants seen in India. It is Evergreen and is usually seen in a light purple to pink shades. Another variety is also seen in white color which adds a beautiful touch to your garden and home. It is a Perennial Plants and requires a good amount of sunlight therefore is an Outdoor Plant. They thrive in well-drained soil and on the ground. They can be potted too but are best grown in-ground or in big pots. The seeds can be sown from January to April.