When we talk about Heather, we almost always mean two different types of plants: Heather and Heath. Although both are members of the Ericaceae family, they differ botanically and are divided into genus Calluna and genus Erica.
For convenience, however, they are almost identical and share color, shape, and growth habits. All True Heathers are varieties of a single species, Calluna vulgaris (misclassified as Erica vulgaris by some botanists).
