Epimedium grandiflorum is a perennial in the family Berberidaceae valued for its large spring flowers. It reaches about 0.4 m and forms a low clump beneath taller plants. It favours partial shade to full shade and tolerates a wide range of soils from sandy to clay, provided they are well drained. Flowering occurs from April to June.

Large-Flowered Barrenwort (Epimedium grandiflorum) is a shade-loving perennial that flowers April to June and suits woodland and ground cover plantings.

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

Epimedium, also known as barrenwort, bishop's hat, fairy wings, horny goat weed, or yin yang huo, is a genus of flowering plants in the family Berberidaceae. The majority of the species are endemic to China, with smaller numbers elsewhere in Asia and a few in the Mediterranean region.

Epimedium grandiflorum

Large-flowered barrenwort | Epimedium grandiflorum

Epimedium grandiflorum 'Rose Queen' is a deciduous perennial ground cover that produces a spring display of long-spurred flowers. It forms low clumps to about 0.4 m and is valued for planting in shady corners. Plants prefer partial shade or full shade and tolerate a wide range of soils. Flowering occurs in spring, from April to June.

Barrenwort 'Rose Queen' (Epimedium grandiflorum 'Rose Queen') is a deciduous shade ground cover that flowers in the UK from April to June.

Epimedium grandiflorum 'Rose Queen'

Barrenwort 'Rose Queen' | Epimedium grandiflorum 'Rose Queen'

Epimedium grandiflorum 'Violaceum' is a perennial in the Berberidaceae grown for its spring flowering display between April and June. It forms a low mound to about 0.4 m, suited to shaded and sheltered positions. The plant favours partial shade to full shade and tolerates a wide range of soils provided they are well drained. Its native range is Japan, southern Manchuria and northern Korea.

Violet-flowered barrenwort (Epimedium grandiflorum 'Violaceum') is a low perennial for sheltered, shaded spots that flowers in April to June.

Epimedium grandiflorum 'Violaceum'

Violet-flowered barrenwort | Epimedium grandiflorum 'Violaceum'

Epimedium perralderianum is a perennial in the barberry family (Berberidaceae) native to Algeria and noted for its spring flowering from April to June. It performs best in partial shade and prefers soil that is moist yet well-drained. The plant suits sheltered, temperate sites where it can establish a year‑round presence beneath taller plants. Flowers appear in spring, before many other shade perennials come fully into leaf.

Perraudi√®re's barrenwort (Epimedium perralderianum) is a perennial from Algeria that flowers April to June and prefers moist, well-drained soil in.

Epimedium perralderianum

Perraudi√®re's barrenwort | Epimedium perralderianum

Epimedium pinnatum var. colchicum is a low-growing perennial used as a shade-tolerant ground cover, reaching about 0.3 metres tall and wide. Native to Turkey to the Caucasus, it suits sheltered, partially shaded or shaded sites. It prefers moist, humus-rich, well-drained soils with a neutral to acidic pH. In the UK it flowers from April to June and is appropriate for woodland planting and understorey planting beneath shrubs and trees.

Colchian barrenwort (Epimedium pinnatum var. colchicum) is a shade-loving perennial ground cover for moist, humus-rich soils that flowers April to June.

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

Epimedium pinnatum var. colchicum

Colchian barrenwort | Epimedium pinnatum var. colchicum

Epimedium x perr. 'Frohnleiten' is a clump-forming member of the Berberidaceae with heart-shaped leaves. It prefers partial shade and an acid loam that remains moist but is well drained. Plants may be deciduous or evergreen and produce flowers from April to June. Suitable uses include ground cover, underplanting of roses and shrubs, and filling flower borders and beds in sheltered, north-, east- or west-facing sites.

Barrenwort Epimedium x perr. 'Frohnleiten' is a clump-forming Epimedium for partial shade in acid loam that flowers April to June.

Epimedium x perr. 'Frohnleiten'

Barrenwort | Epimedium x perr. 'Frohnleiten'

Epimedium × perralchicum is a perennial in the Berberidaceae valued as a shade-tolerant ground cover that flowers in spring. It grows best in partial shade or shade in well-drained, humus-rich soil that stays moist. The plant suits neutral to acidic soils and carries a UK hardiness rating of H5. Expect blooms between April and June.

Barrenwort (Epimedium × perralchicum) is a shade-loving perennial ground cover that flowers April to June in UK gardens.

Epimedium × perralchicum

Barrenwort | Epimedium × perralchicum

Epimedium × versicolor is a perennial in the barberry family (Berberidaceae) valued as a shade ground cover. It flowers in the UK from April to June. The plant performs best in partial shade to full shade in well-drained, humus-rich soil that is neutral to acidic and kept moist. It is classed as hardy (H5) in UK conditions.

Barrenwort (Epimedium × versicolor) flowers April to June and makes a shade ground cover for humus-rich, moist soils.

Epimedium × versicolor

Barrenwort | Epimedium × versicolor

Epimedium × versicolor 'Versicolor' is a member of the genus Epimedium in the family Berberidaceae that flowers from April to June. It is sold under the Epimedium name and should be treated according to the specific guidance from the nursery. Confirm site, soil and light preferences for the cultivar before planting. Expect flowering to occur in the April–June window in UK gardens.

Barrenwort Epimedium × versicolor 'Versicolor' flowers in the UK from April to June and should be sited to match the nursery's planting guidance.

Epimedium × versicolor 'Versicolor'

Barrenwort | Epimedium × versicolor 'Versicolor'

Epimedium × warleyense is a shade-tolerant perennial in the Berberidaceae that forms a low, spreading ground cover. It is valued for its spring flowering display from April to June. The plant favours humus-rich, well-drained soil with a neutral to alkaline pH and performs best in partial shade or full shade. Fully hardy (H7), it suits sheltered north, east or west aspects in UK gardens.

Warley Epimedium (Epimedium × warleyense) is a UK-native shade-loving perennial that flowers April to June and makes a low ground cover in humus-rich soil.

Epimedium × warleyense

Warley epimedium | Epimedium × warleyense

Epimedium × youngianum is a perennial hybrid in the barberry family grown as a shade-tolerant ground cover that produces small spring flowers. It is derived from parent species native to China. Grow it in partial shade or shade on a sheltered north, east or west aspect in moist, well‑drained, humus-rich soil with a neutral to acidic pH. Fully hardy in the UK (H7), it suits woodland and shaded garden borders.

Young's barrenwort (Epimedium × youngianum) is a shade-loving perennial ground cover that flowers April to June and prefers moist, humus-rich neutral to.