Nasturtium

Nasturtium is a common name most often used for flowering plants in the genus Tropaeolum, especially Tropaeolum majus.

Nasturtium is a common name most often used for flowering plants in the genus Tropaeolum, especially Tropaeolum majus. These plants are grown for their bright flowers and edible peppery leaves and flowers, and are commonly cultivated as ornamentals and annual bedding plants in cooler climates.

Taxonomy and naming

Nasturtium is the common name for species in the genus Tropaeolum, which belongs to the family Tropaeolaceae. The name is associated with the plants’ peppery mustard-like flavour and is unrelated to the aquatic genus Nasturtium that includes watercress.

Description and cultivation

Garden nasturtiums include trailing, bush, and climbing forms with disc-shaped leaves and showy flowers in warm colours. They grow best in sun and well-drained soil and are commonly treated as annuals in regions with cold winters.

Edible uses

The leaves, flowers, buds, and young seed pods are edible and are commonly used in salads, as garnishes, or as seasoning. Their flavour is typically described as peppery, similar to watercress.

Native range and spread

Nasturtiums originated in the Andes Mountains of South America and are now cultivated widely around the world. In some places outside their native range, they are considered invasive.