Gray Nickerbean (Caesalpinia bonduc)

Description:  Perennial with vine-like habit, large twice-compound leaves. All parts except flowers widely covered by short spines. Large clusters of fragrant flowers, and  gray marble-sized beans encased in a spiny pod.

Natural Habitat:  Coastal hammocks and beach areas behind dunes.

Planting and Care:  Tolerates partial shade, drought, poor soil, and salt spray.

Pros:  Host plant for Miami blue (Cyclargus thomasi bethunebakeri) and nickerbean blue (Hemiargus ammon) butterflies.  Makes an impenetrable barrier. 

Cons:   Aggressive growth on nearby shrubs and trees.   Extensive spininess.  Recommended only for use in coastal areas, as a barrier or for restoration. If you want to plant for the Miami Blue Butterfly, better to use Keys Blackbead or Balloonvine.

Note:  As ranges of butterflies can fluctuate over time,  planting host plant(s) may not automatically result in bringing a desired species to a given area.