Marine Biodiversity

 

Habitat: Marram Dunes

Species: Sea-holly

Scientific name: Eryngium maritimum

Size: 60cm in height

Colour: Grey-green leaves with blue-green flower heads

Distribution: Widespread around Ireland’s coast

 

 

Sea-holly lives up to the expectations of its name as it produces grey-green leaves with many spikes along their edges. The plant can grow to 60cm in height and flowers between July and September, where it produces teasel-like heads of flowers which look similar to that of a thistle. Sand dune habitats will usually be dominated by marram grass nearest to the seashore as this area has the harshest conditions. The hardy nature of sea-holly means that it can also grow close to the shore. The sea-holly’s leaves have a waxy coating which prevents water loss in the dry, salty conditions.  

Despite its spiky appearance, sea-holly is attractive for many pollinators who seek out the plant for its nectar.

The flowers of Sea-holly have been accredited for having aphrodisiac properties and were even mentioned by Shakespeare for this reason! The tubular roots were once sugared and sold as sweets

sea-holly flower in the sand dunes