Which plant is also known as Vinca or Periwinkle?

The plant known as Vinca or Periwinkle is Vinca minor. This species, also known as lesser periwinkle, is a perennial ground cover that is commonly used in gardens for its attractive foliage and blue-violet flowers. Vinca minor is valued for its ability to thrive in a variety of conditions, making it a popular choice for areas with poor soil or shade. It has a trailing habit and can effectively suppress weeds.

Vinca major, while also referred to as greater periwinkle, is a related species that is typically larger and has broader leaves. However, the term "periwinkle" is most commonly associated with Vinca minor in horticultural contexts. Ajuga reptans, known as bugleweed, and Euonymus fortunei, commonly referred to as wintercreeper, are entirely different plants that do not fall under the Vinca category. Thus, Vinca minor is the correct answer as it embodies the common name most closely linked to "Vinca" or "Periwinkle."