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The Plant Guide

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Dense-flowered mullein

Verbascum densiflorum

This biennial or short-lived, semi-evergreen perennial forms rosettes of leaves densely covered with grayish-yellow hairs. In summer, its bright-yellow or occasionally white blossoms flower along erect, branching stalks up to 5 feet high. It has naturalized in regions of the U.S.

Noteworthy CharacteristicsPlants are well-adapted to cottage, gravel, and rock gardens or naturalized areas. Erect stems bearing profuse saucer-shaped flowers are usually yellow, but also white, brownish-red, or purple. Individual flowers are short lived but numerous, and flowering takes place over a long time. This species will self-sow, but not as a nuisance, and many seedlings vary slightly from the parent cultivar, thus creating welcome surprises.

CareProvide any well-drained soil in full sun or part shade.

PropagationSow seeds directly into the garden, or start them indoors or in containers under a cold frame.

ProblemsPowdery mildew and other fungal leaf spots. Caterpillars.

  • Genus : Verbascum
  • Plant Width : 1 to 3 feet
  • Plant Height : 3 to 6 feet
  • Zones : 4, 5, 6, 7, 8, 9
  • Moisture : Adaptable
  • Tolerance : Deer Tolerant, Drought Tolerant, Frost Tolerant
  • Bloom Time : Early Summer, Late Summer, Summer
  • Light : Full Sun to Partial Shade
  • Maintenance : Low
  • Growth Rate : Moderate
  • Plant Type : Perennials
  • Characteristics : Self Seeds
  • Plant Seasonal Interest : Spring Interest
  • Flower Color : Yellow

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