Lithodora diffusa 'Heavenly Blue' Regular / 2 litre / --- / ---

Lithodora diffusa 'Heavenly Blue' (Zahn's gromwell) is a member of the Boraginaceae family. This perennial exhibits a bushy growth habit and is characterized by its evergreen foliage. It has a hardiness rating of hardy – average winter (-10 to -5ºc), and is hardy through most of the uk apart from inland valleys, at altitude and central / northerly locations. may suffer foliage damage and stem dieback in harsh winters in cold gardens. plants in pots are more vulnerable. .

When fully mature, Lithodora diffusa 'Heavenly Blue' can reach an ultimate height of 0.1–0.5 metres and a spread of 0.1–0.5 metres. For optimal growth, it prefers west–facing, south–facing aspect and exposed exposure. It thrives best in chalk, loam, sand soil types and should be placed in a full sun position.