Which of the following refers to Calluna vulgaris?

Calluna vulgaris is commonly known as Scotch Heather. This plant is a flowering shrub that is native to Europe and is particularly well-adapted to acidic soils and heaths. It produces lovely purple to pink flowers and is often used in landscape gardening for its aesthetic appeal and ground cover capabilities.

The other options refer to different plants entirely: Japanese Camellia is a flowering shrub known for its large, attractive blooms, Mexican Orange is a fragrant shrub commonly used in gardening, and Warty Barberry is a type of barberry known for its spiny, warty appearance and yellow flowers. Understanding the unique characteristics and common names of these plants is essential for horticultural practice, especially within the context of native or adapted species in specific regions like Washington State.