Lewisia

Lewisia is a genus of perennial flowering plants belonging to the family Portulacaceae, native to the arid and semi-arid regions of western North America. Commonly known as bittersweet or piggy buttons, these plants are well-adapted to harsh environments, thriving in rocky soils and dry climates. The genus is named after Adolphe Brongniart’s wife, Léonie-Rose Lewin, who was a botanist and collector of plants.

Lewisia plants are characterized by their succulent, fleshy leaves and striking, often cup-shaped flowers that bloom in late spring to early summer. The flowers typically exhibit vibrant colors, including shades of pink, purple, white, and yellow, and are often pollinated by insects. The genus includes around 30 species, with some varieties being highly sought after by gardeners for their ornamental value.

These plants are known for their resilience and low-maintenance nature, making them popular choices for rock gardens, alpine houses, and drought-tolerant landscapes. Many species form rosettes of leaves close to the ground, with flowers rising on slender stems. Some varieties, such as *Lewisia rediviva*, are notable for their ability to survive extreme conditions, including freezing temperatures and prolonged drought.

Lewisia plants are often propagated through seeds or by dividing offsets, though they can also be grown from cuttings. They require well-draining soil and minimal water once established, making them ideal for gardeners seeking hardy, low-water plants. While generally pest-resistant, they may be susceptible to slugs and snails in overly moist conditions.

In addition to their ornamental use, some species of Lewisia have historical significance among Indigenous peoples of North America, who utilized them for medicinal and culinary purposes. The plants are also valued in conservation efforts due to their specialized habitats and limited ranges.