Water caltrop have been introduced to waterways around the world, and because of their robust growth and tendency to crowd out other species, they are considered a noxious invasive in the US and Australia.. Their scientific name, Trapa, comes from the Latin word calcitrappa, which means "thistle". Its seed pods, which have a variety of pointed and hooked appendages, explain the name. It is entirely separate from commercially-grown water chestnuts, which are in a different genus.
Propagation:
Propagation of water caltrop primarily occurs through seeds. Success relies on warm temperatures and slow-moving, muddy water. Mature seeds should be harvested and sown in suitable conditions. Monitor water temperatures, control algae, and predatory species to ensure healthy growth and self-seeding for future generations.
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