Dalkey Hill and its neighbours: Roches and Killiney, is one of the most interesting botanical areas in the South East of County Dublin, with over 200 native plant species having been recorded there (The Flora of County Dublin 1998).
  The granite and mica schist hills with their thick layer on their seaward slopes of calcareous glacial drift provide a wide variety of micro habitats.
  Some of the highlight species are listed below: -

  Dalkey Quarry has two rare Whitebeams and Bluebell and Greater Stitchwort are mixed in with Bracken.
   A distinctive feature is Climbing Corydalis, and in the quarry Sheep's-bit, as is the occurrence of four scarce clovers; Knotted; Birds-foot; Western and Rough Clover. Birds-foot clover is also found on Dalkey Island.
  Aside from the common maritime species found all along the coast, less common are Spring Squill, Sea Storks-bill, Marram, Lyme-grass and Sea Sandwort. Carpets of the relatively rare Spring Squill can be found on Dalkey Island.