Photo of Marrubium supinum flower by Annie's Annuals & Perennials

Photo by Annie's Annuals & Perennials

Used with permission, all rights reserved.

Show all photos

Marrubium supinum

Also Known As

  • Scallop Shell Horehound

Plant type

perennial, groundcover

size

  • H: 4"-12"
  • W: 12"-24"

planting zones

  • 6b-10b

More Options

Marrubium supinum plant details

Marrubium supinum is a broadleaf evergreen perennial groundcover with green foliage. In summer lavender flowers emerge. Features fuzzy texture. Attracts bees and hummingbirds making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and occasional - low water. Drought tolerant once established. Prefers to be dry in summer. Adapts to various soil conditions. Does well in average, gritty and well-drained soil.

CHARACTERISTICS OF Marrubium supinum

Plant type: perennial groundcover
Plant family: lamiaceae
Foliage: evergreen green
Mature size: 12 IN - 24 IN - wide, 4 IN - 12 IN - tall
Flowers: lavender blooms in summer

GROWING CONDITIONS for Marrubium supinum

USDA Zones: 6b - 10b
Sun exposure: sun - mostly sun
Watering frequency: occasional - low
Resistant to: deer and rabbit
Soil needs: average, gritty and well-drained

Nursery contributed plant descriptions

This extremely lovely aromatic perennial “Horehound” needs NO SUMMER WATER! It makes a perfect foreground plant for a dry garden and is great for dressing up the woody lower branches of many shrubs. From 4-12” tall in part shade and about 2’ across, its dense sage green quilted foliage draws you in with a sort of 3-D effect and the slender white edging of each leaf makes it stand out. Whorls of small lavender flowers appear in leaf axils in mid-Summer. Trouble free, it attracts lots of friendly and interesting bugs!

By: Annie's Annuals & Perennials

Gardening facts about Marrubium supinum plant

How to Grow Marrubium supinum

  • Sun Exposure

    • sun - mostly sun
  • Water Needs

    • occasional - drought tolerant
  • Water Needs

    • dry in summer
  • Soil Needs

    • adaptable
    • average
    • well-drained
    • gritty

Features

  • Foliage Color

    • green
  • Flower Color

    • lavender
  • Wildlife

    • bees
    • hummingbirds
    • deer resistant
    • rabbit resistant
  • Flower Season

    • summer
  • Foliage Season

    • evergreen
  • Texture

    • fuzzy

Landscape groups by tags

See other plant types of Marrubium for your garden

aka Marrubium cyllenium, Horehound

Plant Type

Perennial, Groundcover

Zones

8a-10b

Size

Height: 4"-12"

Width: 24"

  • sun
  • low - drought tolerant
Photo of Marrubium cylleneum foliage, form by Annie's Annuals & Perennials
View Plant

aka Silver Edged Horehound, Silverheels Horehound

Plant Type

Perennial, Groundcover

Zones

4a-9b

Size

Height: 2"-12"

Width: 24"-36"

  • sun
  • regular - drought tolerant
Photo of Marrubium rotundifolium foliage by Plant Select®
View Plant

More Options

aka Silver Horehound

Plant Type

Shrub, Herb

Zones

3a-9b

Size

Height: 18"-24"

Width: 15"-18"

  • sun
  • low - drought tolerant
Photo of Marrubium incanum flower by Karl Gercens III
View Plant

More Options

aka Ballota 'All Hallows Green', Green Horehound

Plant Type

Perennial

Zones

4a-9b

Size

Height: 15"-18"

Width: 36"-48"

  • sun - mostly sun
  • regular - drought tolerant
  • dry in summer
Photo of Marrubium bourgaei 'All Hallows Green' foliage by Secret Garden Growers
View Plant

More Options

+2 more Marrubium
Mailing List
Sign Up for updates on new plant arrivals and deals

© 2010—2026 Plant Lust, LLC All Rights Reserved