Periwinkles are fast growing, evergreen ground cover plants with opposing pairs of glossy dark green or variegated, oblong to lance shaped, 1½"-3" leaves. They produce an abundance of single, 1"-2" funnel shaped flowers with five flared and flattened petals, beginning in mid-spring and continuing throughout the summer. In some areas Periwinkles may become invasive.

Big Periwinkles can be grown in full sun, with plenty of water if your main concern is having lots of flowers, but is better grown as a ground cover in partial shade. Dwarf Periwinkle should only be grown in partial or full shade with a little morning sun. Perennial Vincas thrive in almost any soil, as long as it is well-drained.

For the best results however, compost or other organic material should be mixed into the soil at planting time. Periwinkles are fairly drought tolerant once they are established but grow and bloom best with regular watering. Vincas should be fed every two months while they are actively growing, using a good all-purpose fertilizer applied according to label directions. Shear Periwinkle plants back hard in the spring to promote fresh, new growth and to control spread.

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