Berberis julianae is a multi-stemmed, well-branched shrub in the Berberidaceae valued for its spring display, flowering in April to May. Leaves can be either evergreen or deciduous depending on site and clone. It tolerates full sun to partial shade and withstands exposed as well as sheltered positions. It prefers moist but well-drained soils across chalk, clay, loam or sand and is fully hardy in the UK (H7).

Berberis julianae (Wintergreen Barberry) flowers in April–May and suits full sun to partial shade on moist, well-drained soils.

Berberis julianae

Wintergreen Barberry (Berberis julianae) | April Flowers

Berberis thunbergii 'Atropurpurea Nana' is a compact deciduous shrub notable for its purple foliage. It typically reaches about 2.0 m tall with a 2.5 metre spread. Flowering is April to May, producing pale yellow blooms. Plant in full sun on sandy, loamy or clay soils that are well drained or moist but well-drained.

Dwarf Purpleleaf Japanese Barberry is a compact deciduous shrub that flowers April to May with pale yellow blooms and grows to about 2.0 m by 2.5 m.

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

Berberis, commonly known as barberry, is a large genus of deciduous and evergreen shrubs from 1–5 m tall, found throughout temperate and subtropical regions of the world. Species diversity is greatest in South America and Asia, but native species also appear in Europe, Africa, and North America.

Berberis thunbergii 'Atropurpurea Nana'

Dwarf Purpleleaf Japanese Barberry | Berberis thunbergii 'Atropurpurea Nana'

Caulophyllum thalictroides is a perennial herb from eastern North America that reaches about 0.5 m in height. It favours deep shade and grows in moist, sandy or loamy, well-drained soils. Flowering occurs in April to May with small yellow blooms and the foliage is blue-green. The plant is toxic and should be handled with care.

Blue Cahosh (Caulophyllum thalictroides) is a shade-loving perennial from eastern North America that grows to about 0.5 m in moist, sandy or loamy soils.

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

Caulophyllum is a small genus of perennial herbs belonging to the family Berberidaceae and closely related to the Eurasian genera Leontice and Gymnospermium. It is native to eastern Asia and eastern North America.

Caulophyllum thalictroides

Blue cahosh | Caulophyllum thalictroides

Diphylleia cymosa is a perennial herbaceous member of the barberry family noted for its umbrella-like foliage. Native to the Appalachian Mountains of the USA, it is adapted to shaded, woodland conditions. Plants reach around 0.7 m and produce flowers in May to June. It prefers partial shade to full shade on moist but well-drained sandy or loamy soils and suits woodland or shade gardens.

Umbrella Leaf (Diphylleia cymosa) prefers shady, moist but well-drained loamy or sandy soils and flowers in May to June.

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

Diphylleia cymosa

Umbrella leaf | Diphylleia cymosa

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.

Epimedium × youngianum

Young's barrenwort | Epimedium × youngianum

Podophyllum hexandrum is a herbaceous perennial in the Berberidaceae that reaches about 0.5 m and is adapted to full shade. It prefers sandy or loamy soils that remain moist but well drained. Plant tissues are toxic, so handle with care and avoid placing where children or pets might sample foliage. Its compact height and shade affinity suit it to woodland-style planting.

Himalayan Mayapple (Podophyllum hexandrum) thrives in full shade in moist, well-drained sandy or loamy soils and is fully hardy (H7).

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

Sinopodophyllum is a herbaceous perennial plant in the family Berberidaceae, described as a genus in 1979. It includes only one known species, Sinopodophyllum hexandrum, native to Afghanistan, Bhutan, northern India, Kashmir, Nepal, Pakistan, and western China.

Podophyllum hexandrum

Himalayan Mayapple | Podophyllum hexandrum

Podophyllum hexandrum 'Majus' is a herbaceous perennial in the Berberidaceae that prefers full shade and grows to about 0.5 m. It is native to mountain regions from Afghanistan through the Himalaya to western China and flowers in April to May. The plant prefers sandy to loamy soil that remains moist but is well drained. It is fully hardy in the UK (H7; USDA 5–9).

Himalayan May Apple (Podophyllum hexandrum 'Majus') is a herbaceous perennial for full shade that flowers in April to May and prefers moist, sandy to.

Podophyllum hexandrum 'Majus'

Himalayan May Apple | Podophyllum hexandrum 'Majus'

Podophyllum hexandrum var. chinense is a herbaceous perennial in the Berberidaceae that typically reaches about 0.5 m and is notable for its spring flowers. It favours full shade and a consistently moist but well-drained sandy or loamy soil. Flowering occurs in April to May, producing pale pink blooms. Plants are from mountainous regions of central and south Asia.

Himalayan May Apple (Podophyllum hexandrum var. chinense) is a shade-loving perennial for moist, well-drained sandy or loamy soils, flowering in April–May.

Podophyllum hexandrum var. chinense

Himalayan May Apple | Podophyllum hexandrum var. chinense

A herbaceous perennial, Podophyllum peltatum reaches about 0.3 m and favours full shade. It is native to eastern North America and performs best in moist but well-drained sandy or loamy soil. The plant flowers in April to May and the blooms carry a light scent. Wear gloves and other protective equipment when handling, as it is harmful if eaten.

May Apple (Podophyllum peltatum) is a shade-loving herbaceous perennial from eastern North America that flowers in April to May.

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

Podophyllum is a genus of flowering plant in the family Berberidaceae, native from Afghanistan to China, and from southeast Canada to the central and eastern United States. The genus was first described by Carl Linnaeus in 1753.

Podophyllum peltatum

May apple | Podophyllum peltatum

Podophyllum pleianthum is a shade-adapted perennial from central and south-east China that produces multiple spring flowers in April to May. It stays compact, reaching about 0.3 m, and prefers full shade on moist, sandy to loamy, well-drained soils. Best sited in a sheltered, shady aspect, it needs careful handling as the plant is harmful if eaten and gloves should be worn when handling.

Many-flowered Chinese Mayapple (Podophyllum pleianthum) is a shade-loving perennial that flowers April to May and suits moist, sheltered, well-drained.

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

Podophyllum pleianthum

Many-flowered Chinese mayapple | Podophyllum pleianthum

Ranzania japonica is a perennial herb in the Berberidaceae that forms small colonies from an underground rhizome. Each stem carries divided (trifoliate) leaves with one or a small cluster of drooping, cup-shaped mauve flowers. It favours partial shade in sheltered spots and prefers moist, humus-rich, well-drained soil. Plants are hardy in UK gardens (H5) and flower in May to June.

Ranzania japonica is a Japanese woodland perennial for partial shade in moist, humus-rich, acidic to neutral soils, flowering May to June.

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

Ranzania japonica

Vancouveria hexandra is a perennial herb in the barberry family that bears small white flowers whose outer segments reflex, giving the impression of an inside‑out bloom. It favours low-light conditions and produces its flowers from April to June. The species prefers moist, loamy yet well‑drained soils and is native to western North America. Plants suit locations with partial shade or full shade.

White inside-out flower (Vancouveria hexandra) prefers partial shade and moist, loamy, well-drained soil and flowers April to June.

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

Vancouveria is a small group of plants belonging to the barberry family described as a genus in 1834. The three plants in this genus are known generally as inside-out flowers, and they are endemic to the West Coast of the United States.