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Hoary Alyssum Wikimedia Commons
Brassicaceae

Hoary Alyssum

Berteroa incana

Tough survival on barren ground.

Family
Brassicaceae
Genus
Berteroa
Native to
Europe, Central Asia
Bloom season
Summer, Fall
Type
annual or biennial herb
Height
30–70 cm
Sunlight
full sun
Soil
sandy, dry, poor soils
Water
low; drought-tolerant
Hardiness
3–9
Lifespan
annual to biennial

Did you know

  • The entire plant is covered in tiny star-shaped (stellate) hairs that give it a grayish-white 'hoary' appearance.
  • Hoary alyssum is toxic to horses, causing fever, swollen legs, and potentially fatal laminitis if eaten in hay.
  • Each small white petal is deeply notched, appearing as two petals unless examined closely.
  • It colonizes disturbed, gravelly soils where few other plants will grow, making it a pioneer species.
  • The genus is named after Carlo Giuseppe Bertero, a 19th-century Italian botanist who explored South America.

Color meanings

0

resilience

1

worth beyond appearances

2

tenacity

Uses

  • soil stabilization
  • ecological indicator of disturbance
  • weed control target in horse pastures