Cortusa matthioli is a perennial in the Primulaceae that flowers in May to June. Native to Europe and temperate Asia, it performs best in partial shade. Plant into a well-drained, humus-rich soil that remains moist and is neutral to alkaline in reaction. It is H5 (hardy) for most UK gardens.

Bear's ear sanicle (Cortusa matthioli) is a hardy perennial for partial shade that flowers May to June and suits rock, alpine and border plantings.

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

Primula is a genus of herbaceous flowering plants in the family Primulaceae. They include the primrose, a familiar wildflower of banks and verges.

Cortusa matthioli

Bear's ear sanicle | Cortusa matthioli

Cyclamen cilicium is a tufted, deciduous perennial in the Primulaceae that produces a flush of flowers in autumn and winter. It favours partial shade and a sheltered site with well-drained, neutral loam. The plant suits confined spaces such as containers as well as rock gardens and underplanting beneath shrubs. Flowering occurs in October–December and January–April, providing colour when many perennials are dormant.

Cyclamen cilicium flowers in October–December and January–April and prefers partial shade in well-drained neutral loam.

Cyclamen cilicium

Cyclamen cilicium | Autumn–winter cyclamen

Dodecatheon jeffreyi is a perennial herb in the primrose family that produces its main display in spring. Flowering occurs from April to June. It prefers full sun or partial shade and thrives in moist, well-drained sandy or rocky soils. The species originates from western North America.

Giant American Cowslip (Dodecatheon jeffreyi) flowers April to June and suits full sun or partial shade in moist, well‑drained sandy or rocky soil.

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

Dodecatheon jeffreyi

Giant American cowslip | Dodecatheon jeffreyi

Dodecatheon media is a perennial herb in the Primulaceae that flowers from April to June. Native to North America, it favours moist, loamy, well-drained soil with a neutral to slightly acidic pH and grows in partial shade to full sun. Rated H5 (hardy), it performs best on north, east or west aspects with sheltered to semi-exposed exposure. It is well suited to woodland gardens, naturalised areas and borders.

Shooting Star (Dodecatheon media) flowers April to June and prefers moist, loamy, neutral to slightly acidic soil in partial shade or full sun.

Dodecatheon media

Shooting Star | Dodecatheon media

Lysimachia atropurpurea 'Beaujolais' is a named cultivar within the genus Lysimachia, placed in the Primulaceae. It provides a defined flowering season from June to September. Growers should follow the supplier's guidance for position and soil and note its listed flowering window when planning beds. Recordkeeping of flowering and performance from year to year helps assess how this cultivar suits your plot.

Lysimachia atropurpurea 'Beaujolais' flowers from June to September and is best sited where its summer display can be appreciated.

Lysimachia is a genus consisting of 182 accepted species of flowering plants traditionally classified in the family Primulaceae. Based on a molecular phylogenetic study it was transferred to the family Myrsinaceae, before this family was later merged into the Primulaceae.

Lysimachia atropurpurea 'Beaujolais'

Lysimachia ciliata is an erect perennial herb that reaches around 1.2 metres and flowers in the UK from June to September. It favours consistently moist, well-drained soil and performs in full sun or partial shade. Fully hardy (H7), it suits sites where soil moisture is reliable. Place it where its height contributes to a border or a wet area.

Fringed loosestrife (Lysimachia ciliata) is a fully hardy perennial to 1.2 metres for moist, partly shaded borders and wetland gardens.

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

Lysimachia ciliata

Fringed loosestrife | Lysimachia ciliata

Lysimachia ephemrum is a flowering species in the genus Lysimachia (family Primulaceae) that blooms from June to September. The flowering window makes it useful for extending summer interest into early autumn. Observe its seasonal display when pairing with earlier- and later-flowering perennials. Time any pruning or division to avoid removing flower buds developing during its June–September season.

Lysimachia ephemrum flowers from June to September and is a member of the Primulaceae family.

Lysimachia ephemrum

Lysimachia leschenaultii is a perennial herb in the Primulaceae, noted in its common name for carmine-flowered blooms. It favours moist, well-drained soil and grows in full sun or partial shade. The species originates from India and flowers in the UK from June to September. Plants perform best where soil retains some moisture without waterlogging.

Carmine-flowered loosestrife (Lysimachia leschenaultii) is a perennial from India that flowers June to September and prefers moist, well-drained soil in.

Lysimachia leschenaultii

Carmine-flowered loosestrife | Lysimachia leschenaultii

Lysimachia punctata is a perennial in the Primulaceae that typically spreads to around 0.4 m. It flowers in the UK from June to September. The plant prefers full sun and moist to wet soils and is rated H7 for hardiness. It is native to Europe and Asia Minor.

Dotted loosestrife (Lysimachia punctata) is a perennial that likes full sun and moist to wet soils, flowering from June to September.

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

Lysimachia punctata

Dotted loosestrife | Lysimachia punctata

Myrsine is an evergreen shrub in the Primulaceae with a well-branched, columnar upright habit. It suits sheltered positions on east-, south- or west-facing sites and tolerates loam, sand or clay soils across a wide pH range. Plant in moist but well-drained ground and expect reliable foliage through the year. Flowers appear between May and July.

Myrsine is an evergreen shrub suited to east, south or west-facing sheltered sites with moist, well-drained loam, sand or clay soil.

Myrsine is a genus of flowering plants in the family Primulaceae. It was formerly placed in the family Myrsinaceae before this was merged into the Primulaceae.

Myrsine

Colicwood | Myrsine

Primula 'Asthore Hybrids' is a clump-forming perennial primula that develops basal rosettes of crinkled or mealy leaves and upright flower stems. It flowers from February to June, offering an extended spring display. Plants prefer partial shade, with alpine and auricula types tolerating more sun. Rosettes may be deciduous, semi‑evergreen or evergreen depending on the cultivar.

Primula 'Asthore Hybrids' are clump-forming primulas with crinkled or mealy leaf rosettes that flower from February to June.

Primula is one of the great garden genera, embracing the wild primrose and cowslip, the candelabra species that tier their whorls up a stem in damp ground, drumstick kinds topped with tight spheres, auriculas with their chalky farina and painted faces, and jewel-like alpines for the rock garden. Most form flat rosettes of crinkled or mealy leaves and flower from late winter through spring into early summer, in virtually every colour.

Primula 'Asthore Hybrids'

Primula 'Devon Cream' is a rosette-forming perennial primula that flowers from February to June. It forms clumps of crinkled or mealy leaves and produces spring flower heads above the foliage. Best sited in partial shade on a sheltered, north-, east- or west-facing spot. Soil should be fertile and humus-rich, with neutral to slightly acid pH.

Primula 'Devon Cream' is a rosette-forming perennial primula flowering February to June, suited to partial shade and neutral to slightly acid soil.

Primula 'Devon Cream'

Primula 'Ravenglass Vermilion' is a perennial primula that forms clumps of basal rosettes and is grown for its spring flowering display. Leaves form crinkled or mealy rosettes and may be deciduous, semi‑evergreen or evergreen depending on the parent group. It flowers February to June. Position in partial shade on a sheltered north, east or west facing spot for best results.

Primula 'Ravenglass Vermilion' is a rosette-forming primula that flowers February to June and prefers partial shade in fertile, neutral to slightly acid.

Primula 'Ravenglass Vermilion'

Primula 'Red Hugh' is a rosette-forming, clump-forming perennial in the Primulaceae that bears crinkled or mealy basal leaves and flowers from February to June. It occupies a range of primula groups, so foliage may be deciduous, semi-evergreen or evergreen. Position it in partial shade and a sheltered aspect; alpine and auricula forms within the group will tolerate rather more sun. Soil requirements vary by group but lean towards fertile, humus-rich loam for woodland and candelabra kinds and sharply drained gritty soil for alpines.

Primula 'Red Hugh' is a rosette-forming primula that flowers February to June and does best in partial shade on a sheltered north, east or west aspect.

Primula 'Red Hugh'

Primula 'Rowallane Rose' is a perennial Primula cultivar forming rosettes and clumps, notable for its fragrant spring flowers. It bears rosettes of crinkled or mealy leaves that may be deciduous, semi-evergreen or evergreen. Plants produce umbels of scented blooms in the early season. Flowers appear from February to June.

Primula 'Rowallane Rose' is a fragrant perennial primula flowering February to June, ideal for shaded borders and woodland gardens.

Primula 'Rowallane Rose'

Primula 'Tipperary Purple' (Pr/Prim) is a clump-forming herbaceous perennial in the Primulaceae with semi‑evergreen basal foliage. It flowers in the UK from February to June. Plant in full sun or partial shade on moist but well‑drained chalk, clay, loam or sand in a sheltered south-, east- or west-facing position. Hardiness is rated H4–H7, meaning it ranges from average hardy to fully hardy across much of the UK.

Primula 'Tipperary Purple' (Pr/Prim) is a clump-forming primula that flowers February to June and suits borders, containers and rock gardens.

Primula 'Tipperary Purple' (Pr/Prim)

Primula Bullesiana Hybrids are rosette-forming perennial primulas that produce spring flowerheads between February and June. They form clumps of crinkled or mealy leaves that may be deciduous, semi-evergreen or evergreen depending on the clone. Most types suit partial shade and a sheltered spot, though alpine and auricula-influenced selections will take more sun and need much freer drainage. Soil should be neutral to slightly acid; avoid lime for Asiatic-derived forms.

Primula Bullesiana Hybrids flower from February to June and form rosettes of crinkled or mealy leaves, thriving in partial shade and sheltered spots.

Primula Bullesiana Hybrids

Primula Candelabra species and Hybrids are rosette-forming, clump-forming perennials that carry tiers of flowers on erect stems. They produce rosettes of crinkled or mealy leaves that may be deciduous, semi-evergreen or evergreen. Grow them in partial shade on fertile, humus-rich loam that stays reliably moist; alpine forms prefer a gritty, free-draining mix. Flowering takes place February to June.

Primrose Candelabra Hybrids (Primula Candelabra species and Hybrids) produce tiered flower heads February to June in shaded, moist sites.

Primula Candelabra species and Hybrids

Primrose Candelabra hybrids | Primula Candelabra species and Hybrids

Primula alpicola subsp. luna is a perennial primula that forms rosette, clump-forming groups with crinkled or mealy leaves and bell-shaped flowers. Flowering occurs from February to June, with single plants producing blooms in white, cream, yellow or purple tones. Plants range from deciduous to semi-evergreen or evergreen in leaf retention, depending on form and site. It suits sheltered, part-shade positions where soil matches the plant group’s needs.

Moonlight primrose (Primula alpicola subsp. luna) forms rosettes with crinkled leaves and bell-shaped flowers from February to June in sheltered.

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

Primula alpicola subsp. luna

Moonlight primrose | Primula alpicola subsp. luna

Primula alpicola var. violacea is a rosette-forming perennial primula that bears bell-shaped flowers in whites, creams, yellows and purples. It grows in clumps of crinkled, sometimes mealy leaves that may be deciduous, semi-evergreen or evergreen. Native to Bhutan and southeastern Tibet, it favours cool, sheltered positions and neutral to slightly acidic soils. Flowering occurs from February to June.

Primula alpicola var. violacea, the Moonlight Primrose, flowers from February to June and suits sheltered, neutral to slightly acidic soils.

Primula alpicola var. violacea

Moonlight Primrose | Primula alpicola var. violacea

Primula aurantiaca is a perennial Primula that forms rosettes and compact clumps with crinkled or mealy leaves. It flowers in the spring, from February to June. Plants suit partial shade and are best placed in a sheltered, north, east or west-facing situation. foliage may be deciduous, semi-evergreen or evergreen depending on group.

Primula aurantiaca is a rosette-forming perennial from SW China that flowers February to June and prefers partial shade in humus-rich, neutral to slightly.

Primula aurantiaca

Primula bulleyana is a clump-forming perennial that produces rosettes of crinkled or mealy leaves. Plants may be deciduous, semi‑evergreen or evergreen according to situation. It flowers from February to June. The species originates from south‑west China.

Bulley's primrose (Primula bulleyana) is a rosette-forming perennial that flowers February to June in damp, shady UK sites.

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

Primula bulleyana

Bulley's primrose | Primula bulleyana

Primula burmanica is a rosette-forming, clump-forming perennial from Myanmar with basal rosettes of crinkled or mealy leaves. Its foliage can be deciduous, semi-evergreen or evergreen depending on the clone. Flowering occurs from February to June. It suits partial shade and sheltered positions.

Primula burmanica is a rosette-forming perennial from Myanmar that flowers February to June and prefers partial shade and humus-rich, slightly acid soil.

Primula burmanica

Primula chungensis is a perennial primula from China and Tibet that forms clumps of basal rosettes. The foliage is often crinkled or covered with a mealy bloom, and the flowers are fragrant. It flowers from February to June. Rosette-forming growth and early-season bloom make it useful for sheltered, semi-shaded sites.

Primula chungensis is a rosette-forming perennial from China and Tibet that flowers February to June on partially shaded, neutral to slightly acid soil.

Primula chungensis

Primula denticulata is a perennial in the Primulaceae that forms rosettes and clumps to about 0.3 m. It flowers in the UK from February to June. Leaves are crinkled or noticeably mealy and sit in basal rosettes. Different groups prefer either reliably moist soil or sharply drained, gritty conditions.

Drumstick primula (Primula denticulata) flowers from February to June and suits partial shade with either moist humus-rich soil or sharply drained gritty.

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

Primula denticulata

Drumstick primula | Primula denticulata

Primula denticulata var. cachemiriana is a rosette-forming perennial notable for its rounded, drumstick-like flower heads borne on upright stems. It forms compact clumps of crinkled, sometimes mealy leaves around 0.3 m tall. Flowering occurs from February to June, producing heads in shades ranging from purple and lavender to pink or white. Plants may be deciduous, semi-evergreen or evergreen depending on conditions.

Drumstick primula (Primula denticulata var. cachemiriana) forms rosettes and rounded flower heads from February to June in partial shade and humus-rich.

Primula denticulata var. cachemiriana

Drumstick primula | Primula denticulata var. cachemiriana

Primula elatior var. leucophylla is a rosette-forming perennial primula that forms compact clumps to about 0.3 m. It carries rosettes of crinkled or mealy leaves that may be deciduous, semi-evergreen or evergreen. Flowering runs from February to June, sending blooms above the foliage. Suited to sheltered, partially shaded sites.

Oxlip (Primula elatior var. leucophylla) is a rosette-forming perennial for sheltered, partially shaded sites in the UK that flowers from February to June.

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

Primula elatior var. leucophylla

Oxlip | Primula elatior var. leucophylla

Primula florindae is a rosette-forming perennial in the Primulaceae that produces scented, pendent flower clusters. It grows in clumps from basal rosettes of mealy, crinkled leaves and flowers between February and June. Give a reliably moist, humus-rich spot in partial shade and a sheltered aspect. Suitable for boggy ground or the edge of a stream.

Tibetan cowslip Primula florindae forms rosettes of mealy leaves and bears scented, pendent flowers from February to June in damp, sheltered spots.

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

Primula florindae

Tibetan cowslip | Primula florindae

Primula florindae 'Rasp Red' is a rosette-forming, clump-forming perennial Primula that favours reliably moist sites. It bears basal rosettes of crinkled or mealy leaves and produces its spring flower display between February and June. Plant in partial shade on a north, east or west-facing, sheltered spot. It suits boggy ground and stream margins in moist woodland settings.

Rasp Red Tibetan cowslip is a rosette-forming Primula that flowers February to June and suits bog gardens, streamside and moist woodland planting.

Primula florindae 'Rasp Red'

Rasp Red Tibetan cowslip | Primula florindae 'Rasp Red'

Primula helodoxa is a perennial in the Primulaceae that forms clumps of basal rosettes with crinkled, sometimes mealy leaves. It flowers from February to June on stems that rise above the foliage. Native to China, it prefers sheltered positions and neutral to slightly acid soil.

Primula helodoxa is a rosette-forming perennial from China that flowers February to June and suits sheltered, neutral to slightly acid soil.

Primula helodoxa

Primula japonica is a clump-forming perennial from Japan that flowers in spring (February to June), emerging from rosettes of crinkled or mealy leaves. Foliage may be deciduous, semi-evergreen or evergreen depending on situation and cultivar. It prefers partial shade and reliably moist, humus-rich soil, though alpine forms need sharply drained gritty mix. Hardiness varies by group from H4 to H7.

Japanese primrose (Primula japonica) prefers partial shade and reliably moist, humus-rich soil and flowers February to June.

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

Primula japonica

Japanese primrose | Primula japonica

Primula japonica 'Etna' is a perennial Primula that forms clumps of rosettes with crinkled or mealy leaves. It flowers from February to June. Best grown in partial shade on fertile, humus-rich soil kept reliably moist, it favours neutral to slightly acid conditions and dislikes lime. Suitable positions include the margins of streams, bog gardens and shaded woodland sites.

Primula japonica 'Etna' (Japanese Primrose) suits shaded, damp sites on neutral to slightly acid soil and flowers February to June.

Primula japonica 'Etna'

Japanese Primrose | Primula japonica 'Etna'

Primula japonica 'Millar's Crimson' is a rosette-forming, clump-forming perennial from the Primulaceae that suits damp, shaded spots. It produces a spring display from February to June and carries crinkled or mealy leaves in compact rosettes. Plant where soil remains reliably moist and where north, east or west aspects provide shelter.

Primula japonica 'Millar's Crimson' is a rosette-forming perennial for moist, sheltered, partially shaded sites, flowering February to June.

Primula japonica 'Millar's Crimson'

Japanese Primrose | Primula japonica 'Millar's Crimson'

Primula japonica 'Postford White' is a rosette-forming, clump-forming perennial in the Primulaceae that flowers from February to June. It produces rosettes of crinkled or mealy leaves and sends up spring flower scapes from the centre of each clump. The cultivar suits reliably damp, shaded spots and favours neutral to slightly acid soil. Position it on a north, east or west-facing, sheltered site close to water or in woodland ground.

Primula japonica 'Postford White' is a rosette-forming primrose from Japan that flowers February to June and suits bog gardens, stream margins and.

Primula japonica 'Postford White'

Japanese Primrose | Primula japonica 'Postford White'

Primula microdonta is a rosette-forming perennial in the Primulaceae that produces clumps of crinkled or mealy basal leaves. Leaves may be deciduous, semi‑evergreen or evergreen according to group and site. Flowering occurs from February to June, with blooms borne above the leaf rosettes. It prefers partial shade with a sheltered aspect.

Primula microdonta is a rosette-forming perennial primula that flowers from February to June and prefers partial shade and fertile, humus-rich soil.

Primula microdonta

Primula poissonii is a semi-evergreen, rosette-forming perennial that bears candelabra-like whorls of flowers on upright stems. The corollas range from deep purplish crimson to rose‑purple and are scented. It is native to China and flowers in the UK from February to June.

Poisson's Primrose (Primula poissonii) bears scented purple‑red candelabra flowers from February to June and suits boggy banks and stream margins.

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

Primula poissonii

Poisson's primrose | Primula poissonii

Primula prolifera is a perennial candelabra primrose that forms rosettes of crinkled or mealy leaves and produces fragrant flowers from February to June. Plants are rosette-forming and clump-forming, and leaf retention ranges from deciduous to evergreen. It favours sheltered, north-, east- or west-facing spots and needs reliably moist, humus-rich soil unless you are growing alpine types. Hardiness ranges from H4 to H7, according to group.

Candelabra primrose (Primula prolifera) flowers from February to June and suits moist, shady sites such as bog gardens and stream margins.

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

Primula prolifera

Candelabra primrose | Primula prolifera

Primula pulverulenta is a clump-forming perennial that produces rosettes of crinkled, mealy leaves and upright flowering stems. It bears deep pink flowers in tiers, with blooms appearing February to June. Plants suit reliably moist, fertile humus-rich loam in partial shade on north, east or west-facing, sheltered sites. Hardiness varies by group (H4–H7), from average to fully hardy.

Mealy primrose (Primula pulverulenta) is a rosette-forming perennial for damp borders and stream sides, flowering February–June.

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

Primula pulverulenta

Mealy primrose | Primula pulverulenta

Primula pulverulenta Bartley strain is a clump-forming perennial in the Primulaceae with rosettes of crinkled, mealy leaves and erect flowering stems. Flowers appear from the basal rosettes and bloom February to June. It prefers partial shade on north, east or west-facing, sheltered sites and a fertile, humus-rich soil that remains reliably moist. Typical uses include bog gardens, streamside planting and damp borders.

Mealy primrose (Primula pulverulenta Bartley strain) suits partial shade and reliably moist, neutral to slightly acidic soil and flowers February to June.

Primula pulverulenta Bartley strain

Mealy primrose | Primula pulverulenta Bartley strain

Primula secundiflora is a rosette-forming, clump-forming perennial that develops compact leaf rosettes and multi-stemmed flower heads. It favours reliably moist ground in partial shade and suits north, east or west-facing, sheltered sites. Foliage may be deciduous, semi-evergreen or evergreen, with crinkled or mealy leaves. Flowering occurs February to June.

Secund-flowered primrose (Primula secundiflora) is a rosette-forming perennial for reliably moist, neutral to slightly acidic soil in partial shade.

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

Primula secundiflora

Secund-flowered primrose | Primula secundiflora

Primula sikkimensis is a perennial primula that forms rosettes of crinkled, sometimes mealy leaves and sends up fragrant flower stems. It reaches about 0.9 metres and produces clusters of flowers from February to June. Plants range from deciduous to semi‑evergreen or evergreen depending on the group.

Himalayan cowslip (Primula sikkimensis) produces fragrant flowers from basal rosettes and blooms February to June.

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

Primula sikkimensis

Himalayan cowslip | Primula sikkimensis

Primula smithiana is a perennial primula from the Himalayas noted for rosettes of crinkled or mealy leaves and a clump-forming habit. It flowers from February to June. Plants prefer partial shade on north, east or west-facing, sheltered sites and grow in fertile humus-rich loam; alpine forms need a gritty, free-draining mix. Winter tolerance varies by group from average to fully hardy.

Primula smithiana is a Himalayan perennial forming rosettes of crinkled or mealy leaves and flowering from Feb–June, suited to sheltered, part-shade sites.

Primula smithiana

Primula waltonii is a rosette-forming, clump-forming perennial in the Primulaceae with basal rosettes of crinkled or mealy leaves and fragrant flowers. Foliage may be deciduous, semi‑evergreen or evergreen depending on the plant. Flowering occurs from February to June, producing scented blooms above the leaf rosettes. Plants form lasting clumps rather than single stems.

Primula waltonii is a rosette-forming perennial primula with crinkled basal leaves and fragrant flowers from February to June.

Primula waltonii

Primula × chunglenta is a rosette-forming, clump-forming perennial in the Primulaceae that flowers between February and June. It carries basal rosettes of leaves that may be crinkled or bear a mealy surface and can be deciduous, semi-evergreen or evergreen depending on the form. Soil and moisture requirements vary by group: some need fertile humus-rich loam kept reliably moist while alpine types require sharply drained gritty mix. Plants perform best in sheltered, north-, east- or west-facing positions.

Primula × chunglenta is a rosette-forming perennial that flowers February to June and suits sheltered, partly shady positions.