Skip to main content

Website Retirement

This website has been replaced with an updated version which is available now at https://www.sidmouth-nature.uk

This website was retired on the 30th April 2025 and receives no further updates and records.

Species Green Alkanet (Pentaglottis sempervirens)
Species Photograph
Nature Note

Title: Nature Notes -  Green Alkanet (Pentaglottis sempervirens)

This flower has such lovely deep blue petals one wonders why it is called green alkanet, after all nearly all flowers have green leaves and stems because they contain chlorophyll. The answer would appear to be that this plant retains its green leaves and stem throughout the winter, it is always green even when there are no blue flowers. 

This species is related to forget-me-nots and that can clearly be seen in the shape of the flowers, blue with a white centre and honey guides. These flowers can be seen from as early as March through until July. It is an erect plant growing to a metre tall with very hairy leaves and stems which give it a rough appearance.

Green alkanet can be found on roadsides and in hedgerows, sometimes in woodland borders, and often this will be near human habitation. Although a native plant it was often grown in cottage gardens and has frequently escaped. It does not grow on acid soils preferring more alkaline conditions and it is thought that is where the alkanet name comes from. There are other varieties of alkanet grown in gardens and they two are sometimes encountered in the wild.