| Description | Description | Water Depth | Height Approx. | Shade/Sun | Month Flower |
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| ACORUS (Sweetflag) |
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| Iris-like plant with vertically striped, strap-shaped leaves. |
| 0-12cm | 15-90cm | Full Sun | 5-6 |
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| ALISMA (Water-Plantain) |
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| plantago-aquatica Large open panicles of small, pink on white flowers. |
| 0-30cm | 50-60cm | Full Sun, Part Shade | 7-8 |
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| BUTOMUS (Flowering Rush) |
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| umbellatus Rush-like foliage with umbels of bell-shaped, deep pink flowers. | Royal Horticultural Society Award of Merit | 10-50cm | 60-90cm | Full Sun | 7-8 |
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| CALLA (Bog Arum) |
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| palustris Creeping plant with glossy leaves and smallish creamy-white flowers. |
| 0-30cm | 15-30cm | Part Shade, Full Shade | 7-8 |
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| CALTHA (Kingcup, Marsh Marigold) |
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| Yellow or white buttercup-like flowers over rounded dentate foliage. | Royal Horticultural Society Award of Merit | 0-15cm | 50-60cm | Full Sun | 3-4 |
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| CAREX (Sedge) |
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| Dense hummocks of coloured grass-like leaves and brown flower spikes. |
| 0-15cm | 60-90cm | Full Sun, Part Shade | 6-8 |
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| CYPERUS (Umbrella Sedge) |
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| Sedge-like plant. The leaves radiate from a single stem like inverted umbrella spokes with rust-brown flower spikelets in the centre. |
| 0-20cm | 80-90cm | Full Sun, Part Shade | 7-10 |
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| DARMERA (Umbrella Plant) |
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| Rhizomatous plant with pink flowerheads appearing before the round, inverted umbrella-like leaves. | Royal Horticultural Society Award of Merit | 0cm | 1-1.5m | Full Sun, Part Shade | 4-5 |
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| EQUISETUM (Horsetail) |
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| Green, upright bamboo-like stems with black bands |
| 0-15cm | 60-100cm | Full Sun |
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| GLYCERA (Meadow Grass) |
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| maxima 'Variegata' Leaves striped yellow-white and green, pink tinged when young. |
| 0-10cm | 50-90cm | Full Sun, Part Shade | 6-7 |
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| GUNNERA |
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| manicata (Chilean Rhubarb) A monstrous waterside plant with huge leaves. | Royal Horticultural Society Award of Merit | 0cm | 2-2.5m | Full Sun, Part Shade | 6-7 |
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| HOUTTUYNIA |
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| cordata Rhizomatous, creeping plant with heart-shaped, citrus-scented leaves. |
| 0-10cm | 20-30cm | Full Sun, Part Shade | 5-6 |
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| IRIS |
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| laevigata (Japanese Water Iris) Rich blue standards, narrow erect falls with a yellow midstripe. | Royal Horticultural Society Award of Merit | 0-10cm | 60-80cm | Full Sun | 5-6 |
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| pseudacorus (Yellow Water Iris) Native yellow flowered iris with brownish-black venation on the falls. |
| 0-25cm | 80-90cm | Full Sun, Part Shade | 6-8 |
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| sibirica (Bog Iris) Reed-like foliage with dark veined, blue-violet falls and darker erect standards. |
| 0-5cm | 60-90cm | Full Sun | 5-6 |
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| JUNCUS (Rush) |
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| effusus f. spiralis (Corkscrew Rush) Smooth, dark green twisted ascending stems. |
| 0-10cm | 50-60cm | Full Sun, Part Shade | 7-8 |
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| LOBELIA (Cardinal Flower) |
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| cardinalis Bright red flowers on stout stems with lance-shaped, deep-red leaves. | Royal Horticultural Society Award of Merit | 0-10cm | 60-80cm | Full Sun | 8-9 |
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| LYSICHITON (Skunk Cabbage) |
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| americanus Large yellow arum-like flowers followed by huge luxuriant leaves. | Royal Horticultural Society Award of Merit | 0-30cm | 1.2-1.5m | Part Shade | 3-4 |
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| camtschatcensis As above but with creamy-white flowers. | Royal Horticultural Society Award of Merit | 0-30cm | 1-1.2m | Part Shade | 3-4 |
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| MENTHA (Mint) |
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| aquatica (Water Mint) Creeping plant with lilac flowers and aromatic leaves. |
| 0-15cm | 25-30cm | Full Sun, Part Shade | 6-8 |
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| MENYANTHES |
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| trifoliata (Bog Bean) Creeping plant with leaves that resemble large clover. Flowers white to purplish, with a white beard. |
| 0-15cm | 20-25cm | Full Sun | 7-8 |
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| MIMULUS (Monkey Flower) |
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| cardinalis (Scarlet Monkey Flower) A succession of scarlet flowers not unlike Antirrhinum on upright stems with soft downy leaves. | Royal Horticultural Society Award of Merit | 0-5cm | 60-90cm | Full Sun | 7-8 |
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| MYOSOTIS (Forget-Me-Not) |
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| scorpioides (Water Foget-Me-Not) Sky-blue flowers with a white throat and yellow eye on creeping stems with bright green leaves. |
| 0-25cm | 20-25cm | Full Sun | 5-9 |
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| MYRIOPHYLLUM (Water Milfoil) |
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| aquaticum (Parrots Feather) Submerged at first then later the tips and stems emerge above the surface. May be grown as an oxygenator or marginal. |
| 5-60cm | Spread 1.5-2m+ | Full Sun |
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| NYMPHAEA (Water Lily) |
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| PELTANDRA (Arrow Arum) |
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| undulata (Arrowleaf) Large glossy green sagittate leaf with a slender green spathe. |
| 5-20cm | 45-60cm | Full Sun | 5-6 |
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| PONTEDERIA (Pickerel Plant) |
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| cordata Bright blue flower spikes emerge from unfurling glossy green leaves. | Royal Horticultural Society Award of Merit | 10-20cm | 50-60cm | Full Sun | 6-9 |
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| PRIMULA (Bog Primulas) |
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| Best grown in moist humus rich soil in light shade, but must not be submerged in water. |
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| SAGITTARIA (Arrowhead) |
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| sagittifolia (Swamp Potato) Tuberous, Stoloniferous plant with arrow-shaped emerging leaves. Loose spike of small white flowers with a purple spot at the base of the petals |
| 10-80cm | 30-40cm | Full Sun | 6-8 |
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| SAURURUS |
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| cernuus (Lizard's Tail) Cordate leaves with drooping spikes of white fragrant flower. |
| 0-10cm | 25-30cm | Full Sun | 7-8 |
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| SCHOENOPLECTUS (Rush) |
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| Dark green leaves with small fluffy white, cotton-like flowerheads. |
| 0-20cm | 80-90cm | Full Sun | 5-6 |
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| SISYRINCHIUM |
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| californicum (Golden Eyed Grass) A low clump with sword-like leaves and terminal clusters of golden-yellow flowers. |
| 0-5cm | 10-15cm | Full Sun | 5-7 |
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| THALIA |
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| EvergreenSemi tender | dealbata Ovate grey-green leaves. Slender pancles of violet flowers. |
| 15cm | 2-3m | Full Sun | 6-8 |
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| TROLLIUS (Globe Flower) |
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| Yellow or orange, globes or open cups with prominent stamens. |
| 0cm | 60-90cm | Full Sun, Part Shade | 5-6 |
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| TYPHA (Reedmace) |
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| Leaves conspicuously narrow with brown cylindrical flower spikes 5cm long. |
| 0-20cm | 0.8-1.5m | Full Sun | 7-9 |
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| VERONICA |
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| beccabunga (Brooklime) Small rounded leaves on creeping stems with blue flowers. |
| 0-15cm | 10-15cm | Full Sun, Part Shade | 5-9 |
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| ZANTEDESCHIA (Arum Lily) |
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| Clump forming perennial, with bright glossy green, arrow shaped leaves and large pure white flower spathes. | Royal Horticultural Society Award of Merit | 0-30cm | 40-50cm | Full Sun | 6-9 |
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