Name: Sea Holly
Scientific name: Eryngium maritimum
Nature Stars: 70
About: Found on coastlines and dunes (and even in gardens as a cultivated variety). Flowers between July and August.
How to identify: Looks a bit like a thistle with silvery blue leaves and many prickly spikes on the edges. The flowers are a deep purple-blue when fresh.
Where: Only grows around the coastline of the UK and Ireland
Fantastic fact: In Elizabethan times, the flowers were thought to encourage love.
Photograph credit: Neil Wyatt