Most ornamental landscape plants need a well-drained soil to thrive. The roots of plants generally need to be surrounded by free oxygen in order to grow and multiply. If the pore spaces are filled with water, they will struggle and die.

However, there are a number of plants that developed in wetlands or near swamps that can live and even thrive with their roots in water some or all of the time. Listed below are plants adapted to these conditions.

Herbaceous Perennials
Aconus grarnineus 'Variegatus'
Adiantum pedaturn
Aruncus dioicus
Asplenum ebenoldes
Astilbe x arendsii
Athyrium nipponicum
Caltha palustris
Campanula glomerata
Chelone lyonii
Cimicifuga species
Darmera peltata
Dodecatheon meadia
Dryopteris species
Equisetum hyemale
Filipendula ulmaria
Hibiscus coccineus
Hibiscus moscheutas
Houttuynia cordata
lris ensata
lris pseudacorus
Ligularia species
Lobelia cardinalis
Lobelia slphllmtica
Lysimachia species
Lythrum salicaria
Matteuccia struthiopteris
Myosotis sylvatica
Petasites japanicus
Phalanis arundinacea var. picta
Phlox dlvaricata
Phyilltis scolopendrium
Physostegia virginiana
Polygonum species
Polystichum species
Primrose species
Ranunculus repens
Rodgersia species
Smllacina racemosa
Spartina pectinata
Tradescantia x andersoriana
Trollius europaeus
Astilbe x arendsii
Cimicifuga racemosa
Hosta species
Hibiscus moscheutos
Iris kaempferi
Leucojum vemum
Liriope spicata
Lobelia cardinalis
Lobelia sipliilltica
Lysimachia clethroides
Lysimachia nummularia
Lythrum salicaria
Macleaya cordata
Matteuccla pensylvanica
Myosotis sylvatica
Phalaris arundinacea var. picta
Physostegia virginiana
Polygonum capitatum 'Magic Carpet'
Tradescantia virginiana
Trollius europaeus
Aruncus sylvester
Astrantia species
Caitha palustris Plena
Cimicifuga species
Dicentra species
Hemerocallis species
Haste species
Iris sibirica  species
Ligularia species
Lysimachia species
Polygonum bistorta
Ranunculus species
Rodgersia species
Tradescantia species
Trollius species
Aruncus species - Goatsbeard
Astilbe species - False Spirea
Caltha species - Marsh Marigold
Cimicifuga species - Bugbane
Filipendula species - Queen of the Prairie
Hibiscus species - Rose Mallow
Iris kaempfera - Japanese Iris
Iris pseudacoris - Yellow Flag
Lobelia cardinalis
Lysimachia species - Loosestrife
Lythrum species - Purple Loosestrife
Mertentsia species - Virginia Bluebells
Monarda species - Bee Balm
Primula japonica - Japanese Primrose
Tradescantia species - Spiderwort
Trollius species - Globe Flower
Ornamental Grasses  
Miscanthus sacchariflorus
Miscanthus sinensis 'Variegatus
 
 
Shrubs  
Nandina domestica - Heavenly Bamboo
Hypericum species - St John's Wort
Viburnum opulus - European Cranberrybush
Ilex species - Holly
Juniperus species - Juniper
Viburnum plicatum var. tomentosum - Doublefile Viburnum
Kerria japonica - Japanese Kerria
Kolkwitzia amabilis - Beautybush
Lagenstroemia indica - Crapemyrtle
Viburnum trilobum - American Cranberrybush
Leptospermum scopanum - New Zealand Teatree
Ligustrum species - Privet
 
Trees  
Salix species - Willows
 

 

 

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