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In The Garden: Sea lavender helps reduce erosion on dune beaches

By Staff | May 21, 2019


The sea lavender (Tournefortia gnaphalodes) is a beautiful South Florida native found along beaches and sand dunes. The species is on Florida’s endangered species list due to development of coastal areas.

The unique plant can grow several feet in height, though in most cases it would be kept at a couple of feet in height due to its mounding/sprawling growth habit. Sea lavender is ideal for stabilizing coastal dunes by trapping sand in its roots.

Sea lavender is characterized by its silver foliage that is covered in small grey hairs, with its overall appearance similar to that of lavender or rosemary. The plant flowers throughout the year producing small clusters of white flowers. Sea lavender is able to be propagated by cutting, ground-layering or by seed.

The species is highly tolerant of salty beach soil and salt spray as it is primarily used to reduce erosion on dune beaches. Companion plants such as dune sunflower and railroad vine are used in similar applications along the coast.

Once established, the species is highly drought tolerant and does not need fertilization. Root rot is the biggest concern with the species so making sure to reduce irrigation during the wetter months is key.

In The Garden is a joint effort by all at the local garden center, at 3889 Sanibel-Captiva Road, Sanibel. For information, contact 239-395-5859 or visit “http://www.facebook.com/rswalshinthegarden”>www.facebook.com/rswalshinthegarden.