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Which Alismatales plants are grown in water gardens and formal pools?

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The order Alismatales includes several aquatic plants frequently cultivated in water gardens and formal pools for their ornamental value.

Key examples include:

  • Cape pondweed (Water hawthorn): Belonging to the family Aponogetonaceae, Aponogeton distachyos is a popular ornamental species grown in pools and greenhouses.1
  • Arrowhead: Members of the genus Sagittaria, part of the Alismataceae family, are common aquatic herbs often found in shallow water and suitable for garden settings.23
  • Pondweeds: Various species within the family Potamogetonaceae are cosmopolitan freshwater plants sometimes grown in ponds.1

While some species in this order are considered weeds in natural waterways, their ability to thrive in aquatic environments makes them staples for managed water features.4