Is mullein related to foxglove?

Mullein and foxglove are not closely related plants. They belong to different plant families and have distinct characteristics. While they may share some similarities in terms of appearance, they are distinct species with their own unique features.

Mullein, scientifically known as Verbascum thapsus, belongs to the family Scrophulariaceae, commonly known as the figwort family. On the other hand, foxglove, also known as Digitalis purpurea, belongs to the family Plantaginaceae, commonly referred to as the plantain family.

One of the reasons mullein and foxglove might be mistaken for each other is their overall shape and form. Both plants have tall, upright stems with large basal rosettes of leaves. However, upon closer inspection, there are several noticeable differences.

Firstly, the leaves of mullein and foxglove have distinct characteristics. Mullein leaves are large and broad, with a fuzzy or woolly texture. They are densely covered with fine hairs, giving them a soft, velvety feel. In contrast, foxglove leaves are more lance-shaped and have a smooth surface. The edges of foxglove leaves are toothed, meaning they have small serrations or teeth along the margins, while mullein leaves are untoothed and have smooth edges.

Additionally, the flower spikes of mullein and foxglove are unique to each plant. Mullein produces tall, erect spikes covered in small, yellow flowers. The flowers are arranged in a dense, cylindrical cluster along the spike. Foxglove, on the other hand, bears tall spikes adorned with tubular-shaped flowers that come in various colors, including shades of pink, purple, and white. The flowers of foxglove are larger and more bell-shaped compared to the smaller, more clustered flowers of mullein.

In terms of cultivation and uses, mullein and foxglove also differ. Mullein is often grown as an ornamental plant for its striking appearance and is known for its medicinal properties. Its leaves and flowers have been used in traditional medicine for various ailments, such as respiratory issues and skin conditions. Foxglove, on the other hand, is primarily cultivated for its attractive flowers and is commonly found in gardens and landscapes. However, it is important to note that foxglove contains potent cardiac glycosides, making it toxic if ingested, so caution should be exercised when handling or growing this plant.

While mullein and foxglove may share some superficial similarities, they are not related to each other. Mullein belongs to the Scrophulariaceae family, while foxglove belongs to the Plantaginaceae family. Their leaves, flowers, and uses are distinct, allowing for differentiation between the two plants.

Photo of author

Caroline Bates

Caroline is a Miami-based landscaper who specializes in drought-tolerant landscapes. She is the mother of two young children and also enjoys writing for GreenPacks.org in her spare time. Caroline takes great pride in her work, and loves being able to share her knowledge with others through her writing.