Incarvillea delavayi is a perennial in the Bignoniaceae that flowers in summer from June to August. It grows to about 0.4 m and is native to SW China. Plant it in a full-sun position in sandy or loamy soil that is moist but well-drained. It is rated H5 (hardy) for UK conditions.

Delavay hardy gloxinia (Incarvillea delavayi) is a perennial that flowers June to August and prefers full sun in moist, well-drained sandy or loamy soil.

https://en.wikipedia.org/wiki/Incarvillea_delavayi

Incarvillea is a genus of about 16 species of flowering plants in the family Bignoniaceae, native to central and eastern Asia, with most of the species growing at high altitudes in the Himalaya and Tibet. The most familiar species is Incarvillea delavayi, a garden plant commonly known as hardy gloxinia or Chinese trumpet flower.

Incarvillea delavayi

Delavay hardy gloxinia | Incarvillea delavayi

Incarvillea mairei is a perennial in the Bignoniaceae that flowers in summer between June and August. It comes from China and suits positions in full sun to partial shade. Plant in well-drained, fertile soil that is neutral to alkaline and kept reliably moist but not waterlogged. It is rated H5 (hardy) for UK gardens and is commonly used in rock gardens, borders and alpine beds.

Maire's hardy gloxinia (Incarvillea mairei) is a hardy perennial from China that flowers June to August and prefers well-drained, neutral to alkaline soil.

Incarvillea mairei

Maire's hardy gloxinia | Incarvillea mairei

Incarvillea mairei 'Bees' Pink' is a cultivar of Incarvillea in the Bignoniaceae, an herbaceous perennial that flowers in the UK from June to August. The genus originates from temperate high-altitude regions of central and eastern Asia, where many species grow in mountain habitats. Unlike most Bignoniaceae, Incarvillea species are non-woody perennials adapted to cooler conditions. 'Bees' Pink' is valued for its mid-summer flowering display within that seasonal window.

Incarvillea mairei 'Bees' Pink' is an herbaceous Incarvillea that flowers in the UK from June to August.

Incarvillea mairei 'Bees' Pink'

Incarvillea mairei 'Frank Ludlow' is an herbaceous perennial in the Bignoniaceae originating from high-altitude regions of central and eastern Asia. It produces its flowers in the UK from June to August. The cultivar sits within a genus of temperate, mostly mountainous plants rather than the tropical, woody members more typical of the family. Its seasonal summer bloom period gives clear midsummer interest in appropriate sites.

Incarvillea mairei 'Frank Ludlow' is an herbaceous perennial from high-altitude Asia that flowers in the UK from June to August.

Incarvillea mairei 'Frank Ludlow'

Incarvillea mairei 'Nyoto Sama' is a named cultivar in the genus Incarvillea, a member of the Bignoniaceae. It is a temperate Incarvillea selected for its summer flowering, which occurs from June to August. The cultivar name indicates a specific garden selection rather than a wild taxon. Flower display and exact habit vary with growing conditions and provenance of the stock supplied.

Incarvillea mairei 'Nyoto Sama' is a cultivated Incarvillea in the Bignoniaceae that flowers from June to August.

Incarvillea mairei 'Nyoto Sama'

Incarvillea olgae is a flowering species in the genus Incarvillea, placed in the family Bignoniaceae. In the UK it produces flowers from June to August. Specific growth habit and cultivation needs vary across Incarvillea species, so confirm details with the supplier before planting. Observe the plant through its June–August display to judge siting and companion planting.

Incarvillea olgae flowers in the UK from June to August; consult the supplier for specific cultivation advice.