Tropaeolum tuberosum

Mashua, Tropaeolum tuberosum, is a perennial climber bearing small, lobed, glaucous leaves and from midsummer to the first frosts, orange-yellow flowers held on long spurs.

Grown up a sunny, sheltered wall, Tropaeolum tuberosum will quickly clothe it in foliage and flowers, providing a long season of interest.

For best results, grow Tropaeolum tuberosum in full sun in moist, well-drained soil. In winter, the tubers that the foliage grows from will either need to be dug up and stored somewhere frost-free over winter, or protected with a thick mulch if grown in a mild or coastal location.