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plant field guide

Coastal indigo

Identification, habitat and island ecology for coastal indigo around South Padre Island.

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Recognize the plant

Coastal indigo (Indigofera miniata) is one of the plants recorded in the reviewed Padre Island habitat research. A low trailing legume with small divided leaves and salmon-to-pink pea-shaped flowers.

Habitat on a barrier island

Sandy grassland and stable dune edges where the plant can spread between larger grasses. Presence still varies by salinity, sand movement, flooding, maintenance and season, so this profile is a field clue rather than a promise at one beach access.

Why it matters

Flowers and foliage support coastal insects, including butterflies, while the prostrate growth fills gaps without forming a tall visual barrier. A plant does not have to be rare to be important: roots, leaves, flowers and seed all connect moving sand or shallow water to the island food web.

Look without changing the habitat

Stay on public paths and dune walkovers, never pull or transplant a wild specimen, and keep vehicles, chairs and foot traffic out of vegetation. Photograph the whole plant, leaves, flowers or fruit and the surrounding habitat before making an identification. Seagrasses seen as beach wrack may have drifted from another part of the lagoon or Gulf.

Source trail

This individual profile was separated from SouthPadreInfo's reviewed plant collection so it can be found and linked directly. Use NPS Padre Island plants for the wider habitat context and send a correction when a name or range needs another look.