Salt marshes surround the margins of tidal estuaries.

Species are listed in order of tolerance of these extreme conditions.

• Avicennia marina var.resinifera mangrove

• sarcocornia quinqueflora glasswort

• Apodasmia similis /Leptocarpus similis oioi

• Plagianthus divaricatus saltmarsh ribbonwood

• Phormium tenax harakeke

• Leptospermum scoparium manuka

• Gleichenia dicarpa tanglefern

• Leucopogon fasciculatus mingimingi