Incarvillea tubers

Incarvillea, commonly known as hardy gloxinia or garden gloxinia, brings a slightly unexpected look to summer borders. Rosettes of divided, fern-like foliage appear first, followed by upright stems carrying large trumpet-shaped flowers in shades of pink, rose or white, often with a paler or golden throat. Despite the common name, Incarvillea is not a true gloxinia. Its habit is much more suited to the garden, where Incarvillea tubers can bring a clear flowering moment to the front of borders, raised beds and larger containers.

Plant hardy gloxinia tubers in spring in fertile, sharply drained soil, choosing a position in sun or light shade. Good drainage matters, particularly through winter, as the fleshy roots dislike sitting wet for long periods. A sheltered site can help the flowers hold well through summer, while a little protection from the strongest midday sun may be useful in warmer positions. Once established, these perennial plants can return in following seasons where conditions suit them.

The shape of the flowers gives Incarvillea its character. Broad trumpets sit above fine foliage, creating contrast without taking over the planting around them. Group several Incarvillea plants through a border for a stronger display, or place them among lower perennials where the flower stems can rise clearly above neighbouring growth. Their compact scale, distinctive foliage and summer flowering make hardy gloxinia a useful choice for UK gardens where good drainage and a little shelter can be provided.