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.