Murdannia nudiflora is a tropical Asian native that has made itself at home across the warm-temperate Americas, turning up in lawns, gardens, and low spots wherever hot, wet weather persists from late May onward. Its Latin epithet means 'naked flower,' a reference to the leafless stalks from which its small pink blooms appear in late summer and fall. Seedlings can look convincingly like young grass, which is part of what makes early identification and control so difficult.

The plant spreads exclusively by seed and can complete several generations in a single season, building up seedbanks that make management a multi-year effort. Infestations typically begin in drainage ditches or standing-water areas and spread outward. Stems root at the nodes, and any fragment left during removal can establish new growth. It is not recommended for gardens or wild habitats, and low-built dogs that brush against it may develop contact dermatitis.