The flowers of incarvilleas are large for the size of the plant, and brightly coloured. They are widely flared trumpets, a few to each short stem, in the wild appearing in the summer rain after a dry spring. A few species are shrubby, with more flowers to each stem, but smaller.

Incarvillea delavayi has rosettes of mid green leaves, divided into lance shaped coarsely toothed leaflets and up to 10 gloriously large widely trumpet shaped, yellow throated, rose pink to purple flowers. Originally from Yunnan in China.