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Marrubium incanum


(Silver Horehound) Wooly white hairs on the underside of gray-green foliage help conserve moisture and give this drought resistant groundcover a silvery appearance.

Price: $11.50
Degree of Difficulty
Degree of Difficulty
This plant is easy to grow in a variety of conditions.
Common name
This is the non-scientific name used for a plant. A plant may have several common names, depending on the gardener's location. To further confuse the matter, a common name may be shared by several completely different plants. At Flowers by the Sea, we rely on the scientific name to identify our plants and avoid confusion.
Silver Horehound
USDA Zones
The U.S. Department of Agriculture plant hardiness zones indicate the temperature zones where a plant is likely to thrive. It is determined by the average annual winter minimum temperature. Actual winter temperatures may be higher or lower than the average.
4 - 11
Size (h/w/fh)
The anticipated mature size of the plant: Height, Width & Flower Height.
This is the average amount of sunlight that a plant needs to thrive. Generally, full sun exposure is 6 or more hours of direct sun daily while partial shade is less than 4 hours of sun or dappled shade all day. Plants may tolerate more sunlight in cooler climates and need afternoon shade in extremely hot climates.
Full sun
Soil type
This is the kind of soil that a plant needs to thrive. Most plants require a well-drained soil that allows the water to soak into the soil without becoming soggy. Sandy and clay soils can be improved by digging in compost to improve drainage.
Well drained
Water needs
Plants have specific water requirements. Water loving means the plant needs regular watering to keep the soil moist. Average generally indicates applying 1 inch of water per week, or watering when the soil is dry to a depth of 3 to 4 inches. One inch of water is equal to 5 gallons per square yard of soil surface.
Drought resistant
Container plant?
"Yes" indicates that this plant can be successfully grown as a container plant.
  • Marrubium incanum
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Ratings & Reviews

(Silver Horehound) Wooly white hairs on the underside of gray-green foliage help conserve moisture and give this drought resistant groundcover a silvery appearance. This explains the plant’s common name as well as the second word in its botanical name, incanum, which means “hoary” (whitish-gray) in Latin.

The downward curving leaves of Marrubium incanum have a pleasant, suede-like texture and attractively scalloped and toothed margins. During summer, they are topped by fragrant whorls of tiny, pale lilac flowers that fade to white. Similar to so many nectar-rich plants in the mint family, it is a favorite among bees.

This Mediterranean native tolerates cold and heat as well as dry spells. In the wild of its homelands, including Italy, it appears in grassy areas beside agricultural fields along with wildflowers like Red Poppy. Various types of Marrubium have a long history of medicinal use, but this one is primarily valued as a pollinator plant and resilient, ornamental perennial.

For best growth, give Silver Horehound full sun, well-drained soil, and average watering based on local precipitation.