Lavatera cachemiriana is a shrub reaching about 2.4 m, native to Kashmir and belonging to the mallow group. It prefers a sunny position and will tolerate sandy, loamy or clay soils provided they are well drained or at least moist but well drained. Classified H5, it is hardy across most of the UK. Allow room for its mature height when siting.

Lavatera cachemiriana, a hardy mallow shrub up to 2.4m, thrives in full sun and well-drained soils, ideal for sunny UK gardens.

Malva is a genus of herbaceous or woody, annual, biennial, and perennial plants in the family Malvaceae. It is one of several closely related genera in the family to bear the common English name mallow.

Lavatera cachemiriana

Mallow | Lavatera cachemiriana

Lavatera maritima is a shrubby mallow originating from continental Portugal, valued for planting in coastal and sheltered borders. It prefers full sun or light shade and a well-drained soil with moderate moisture. Give it a sheltered position to suit its exposure needs and its average UK hardiness rating (H4). Suitable uses include mixed borders and coastal gardens.

Tree Mallow Lavatera maritima is a shrub from Portugal that prefers full sun, well-drained soil and a sheltered site.

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

Lavatera maritima

Tree Mallow | Lavatera maritima

Lavatera olbia is a shrub valued for ornamental use and particularly suited to coastal planting. It performs best in full sun or partial shade in well-drained soil with only moderate moisture. Native to the western Mediterranean, it is classed H5 (hardy) for UK conditions and works well in borders and seaside sites.

Garden tree mallow (Lavatera olbia) is a hardy shrub for borders and coastal gardens, preferring full sun to partial shade and well-drained soil.

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

Lavatera olbia

Garden tree mallow | Lavatera olbia

Lavatera olbia 'Rosea' is a shrub from the western Mediterranean, commonly used in borders and hedges. It favours a sheltered position in full sun or partial shade and prefers well-drained soil with moderate moisture. Classified H4 (average) for UK hardiness, it tolerates typical British winters provided extreme exposure is avoided. Plant it at the back of a mixed border or as an informal screen where shelter is available.

Lavatera olbia 'Rosea' (Rose Tree Mallow) is a Mediterranean-origin shrub for sheltered, sunny or partially shaded sites in well-drained soil for borders.

Lavatera olbia 'Rosea'

Rose Tree Mallow | Lavatera olbia 'Rosea'

Lavatera thuringiaca is a perennial mallow reaching about 1.8 m and native to eastern Europe and southwestern Asia. It prefers a sunny position and will tolerate sandy, loamy or clay soils provided they are well drained or at least moist but well drained. In the UK it is rated H5 (hardy) and corresponds to USDA zones 7–10. Allow room for its height by siting it towards the rear of a border or as an informal screen.

Garden Tree-mallow (Lavatera thuringiaca) is a tall perennial for full sun and a range of soils, hardy to H5 and suited to sunny UK borders.