Prostanthera cuneata

alpine mint bush

  • © Richie Steffen / Great Plant Picks

  • © Richie Steffen / Great Plant Picks

  • © Richie Steffen / Great Plant Picks

Outstanding Qualities

Who would have thought this cute little shrub from Australia would be such a good grower for the maritime Pacific Northwest. This small shrub becomes a compact spreading mound in the garden. The tiny evergreen leaves have a refreshing minty fragrance when brushed up against. In late spring to early summer small orchid-like white flowers cover the shrub and are very attractive to pollinators.

Quick Facts

Plant Type: mounding shrub

Foliage Type: evergreen

Plant Height: 1 ft. 6 in. (0.46 meters)

Plant Width/Spread: 3 ft. 0 in. (0.91 meters)

Plant Height-Mature: 2 ft. 0 in. (0.61 meters)

Plant Width-Mature: 5 ft. 0 in. (1.52 meters)

Hardiness: USDA Zones 7 to 10

Flower Color: white

Sun/Light Exposure: full sun to light shade

Water Requirements: occasional watering to drought tolerant when established

Seasonal Interest: flowers late spring through early summer; the fine foliage is attractive all year long

Wildlife Associations: bees, butterflies

Resistant to: aphids, deer, slug, snail

Colors & Combos

Great Color Contrasts: orange, red, yellow

Great Color Partners: blue, lavender, pink

Culture Notes
Alpine mint bush grows best in full sun to light shade. Any well drained soil is fine for growing this shrub, but it will tolerate sandy soils and dry locations. Once established it will thrive on only occasional watering and can be completely drought tolerant. Not necessarily a long-lived plant, but should grow well and be beautiful for at least a decade.
Geek Notes
Native to southeastern Australia in the states of New South Wales and Victoria and is found at subalpine elevations among low shrubs and granite rocks. English botanist George Bentham (1800-1884) formally described this species in 1848.