Verbascum densiflorum, commonly known as Denseflower Mullein or Dense-flowered Mullein, is a biennial herb that is native to Europe and Asia. It is characterized by its tall, erect form, reaching up to 6 feet (1.8 meters) in height. The plant features a rosette of large, woolly leaves at the base from which a tall spike emerges, bearing dense clusters of yellow flowers that bloom in the summer. The flowers are showy and attract a variety of pollinators.

Denseflower Mullein is valued for its striking vertical accent in the garden and its ability to thrive in poor, disturbed soils. It is often used in wildflower gardens, naturalized areas, and as a background plant in borders due to its height and structure. In cultivation, it prefers full sun to partial shade and requires well-drained soil. It is drought-tolerant once established and generally requires little maintenance. However, it can self-seed prolifically and may become weedy if not managed. Gardeners should be aware that Verbascum densiflorum can be potentially invasive in some regions and should check local guidelines before planting.CC BY-SA 4.0