Digitalis ferruginea is a biennial or short-lived perennial in the Plantaginaceae that bears upright spikes of russet tubular flowers. It forms a basal rosette of oblong dark green leaves and typically reaches about 1.2 metres tall when in flower. Flowering takes place from June to August. All parts are poisonous and leaf contact can cause an allergic reaction, so handle with care.

Rusty foxglove (Digitalis ferruginea) produces russet tubular spikes from June to August and forms a rosette of dark green leaves.

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

Digitalis is a genus of about 20 species of herbaceous perennial plants, shrubs, and biennials, commonly called foxgloves.

Digitalis ferruginea

Rusty Foxglove | Digitalis ferruginea

Digitalis lanata is a perennial herbaceous foxglove native to eastern Turkey, northern Iran and the Caucasus. It typically reaches about 0.6 m and produces summer flower spikes from June to August. Plant in a sunny position in sandy, loamy or clay soils that are well‑drained and can remain moist without waterlogging. All parts are TOXIC if eaten; wear gloves and other protective equipment when handling and note it is TOXIC to pets.

Grecian foxglove (Digitalis lanata) is a 0.6 m perennial that flowers June to August and prefers full sun in well-drained soils.

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

Digitalis lanata

Grecian foxglove | Digitalis lanata

Digitalis parviflora is a perennial herbaceous foxglove prized for its summer display of flowers between June and August. It tolerates a range of light from partial shade to full sun and favours moist but well-drained, sandy or loamy soil with a neutral to slightly acidic pH. The plant is rated H5 for UK hardiness (hardy) and suits borders and woodland gardens. All parts are toxic if eaten, so wear gloves when handling and keep it away from pets.

Small-flowered Foxglove (Digitalis parviflora) blooms June to August and prefers moist, well-drained sandy or loamy soil in partial shade or full sun.

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

Digitalis parviflora

Small-flowered foxglove | Digitalis parviflora

Digitalis xmertonensis is a species of Digitalis in the family Plantaginaceae and part of the group commonly known as foxgloves. It produces the upright flowering spikes typical of foxgloves and flowers in the UK from June to August. The plant suits positions where its vertical blooms can be seen above lower perennials. Leaves and finer details vary within the genus and should be checked at purchase.

Digitalis xmertonensis blooms in the UK from June to August and provides the upright foxglove spikes valued in mixed borders.

Digitalis xmertonensis

Foxglove | Digitalis xmertonensis

Digitalis × mertonensis is a herbaceous perennial in the Plantaginaceae that flowers from June to August. It prefers full sun to partial shade and fertile, well-drained soil that is neutral to slightly acidic and kept moist but not waterlogged. It is classed H5 for UK hardiness. All parts are toxic if eaten, so wear gloves when handling and keep it away from pets.

Strawberry foxglove (Digitalis × mertonensis) flowers from June to August and suits borders or cottage gardens but is toxic if eaten.