This genus includes both submerged and floating paludal plants. They are rarely
found in aquariums, but are suitable for garden ponds.
When the azure water hyacinth is submerged, its fine leaves are round at the
tips. It needs soft water and good lighting. It can be reproduced by means of cuttings.
Size: 40 cm.
This magnificent floating water hyacinth, ideal for garden ponds, has also been
successfully introduced into many tropical areas to purify the water, as it gobbles
up nitrates. However, in large bodies of water it grows so profusely that it has
caused problems for boats, although there are plans to alleviate this by producing
methane from water hyacinths through fermentation. Size: 10 cm.