Delphinium 'Black Knight' (delphinium Black Knight Group) is a member of the Ranunculaceae family. This perennial exhibits a columnar upright growth habit and is characterized by its deciduous foliage. It has a hardiness rating of hardy – cold winter (-15 to -10ºc) – hardy through most of the UK even in severe winters. May not withstand open or exposed sites or central / northerly locations. Many evergreens suffer foliage damage and plants in pots will be at increased risk.
When fully mature, Delphinium 'Black Knight' can reach an ultimate height of 1.5–2.5 metres and a spread of 0.5–1 metres. For optimal growth, it prefers south–facing, west–facing, east–facing aspect and sheltered exposure. It thrives best in chalk, loam, sand soil types and should be placed in a full sun position.
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