Verbascum lychnitis aka White Mullein

Verbascum lychnitis, or white mullein, belongs to the Scrophulariaceae family. Its native range spans Morocco, Europe, western Siberia and Central Asia. It is native to Britain and Ireland. This temperate plant grows on dry, lime-rich banks and waste ground. It lives as a biennial, though some plants persist as short-lived perennials. This short life cycle shapes its role in garden beds.

Plants reach 3.3–4.9 feet [1–1.5 metres] tall in gardens. Their spread is about 1.6–3.3 feet [0.5–1 metre]. The plant forms a clump with a tall, upright outline. Mid-green, lance-shaped leaves form a rosette near the ground. Some leaves stay through winter, giving it semi-evergreen foliage. It reaches its mature size within one to two years. Rich soil can produce larger plants that need support.

A branched flower spike rises above the leaf rosette. It bears white or yellow blooms from mid- to late summer. Each bloom has a shallow, saucer-like shape. The strong upright stem adds height to mixed flower beds. RHS suggests it for cottage gardens, gravel gardens and wildlife gardens. It also suits coastal sites and city or courtyard gardens. Its narrow form can bring height to these planting spaces.

Choose full sun and poor soil that drains well. Alkaline ground suits this species best. Chalk, loam and sandy soils offer suitable growing conditions. It accepts dry to moist soil, provided water drains away. Both open and sheltered sites suit it. South- or west-facing positions provide the sun it needs. RHS rates its hardiness H6, covering cold UK and northern European winters. Plants For A Future lists USDA zones 5–9. Grow new plants from seed; routine pruning is not needed.

Watch for caterpillars and figwort weevil, which may attack plants. Powdery mildew can also occur. Plants For A Future records no known edible or medicinal uses. It also lists no known hazards, but that does not establish food or pet safety. The same source reports using flower heads to deter mice and rats in fruit stores. It lists the plant as a dynamic accumulator. That label does not establish a specific benefit in garden soil.