According to Marcus Chilton-Jones in an article entitled ‘Take your cues from nature’, in the Royal Horticultural Society’s magazine, The Garden, 147(8): 28, August 2022: ‘Sayings like “don’t cut your box [Buxus sempervirens] till after Derby Day’ (end May/early June) are utter nonsense’.

Image: clipped box in garden of Ham House, London Borough of Richmond upon Thames, July 2022, © Carlos Bruzon.