Information on Mayweed Sea

Common Name: Mayweed Sea
Scientific Name: Tripleurospermum maritimum
Irish Name: Lus Bealtaine
Family Group: Asteraceae
Distribution: View Map (Courtesy of the BSBI)
Flowering Period


Click for list of all flowering by month
Mayweed Sea could sometimes be confused with:

Mayweed, Scented,

This is one of those plants described as 'variable'. It's to be found mainly growing on shingle and waste ground in coastal areas and is a very pretty sight from April to October with its lovely daisy-flowers. The 20-40mm flowers have yellow centres (disc florets) and white petals (ray florets).   The fleshy leaves are also very pretty; they are cut into numerous pinnate divisions.  This is one of our native coastal plants and belongs to the family Asteraceae.  

I first identified this plant in Co Kerry in 1977 and photographed it near Cullenstown, Co Wexford in 2006. 

If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre

Mayweed Sea
Mayweed Sea