Beyond the true Arums, there is a huge range of plants from the Arum family for you to search out, including the Peace Lily, Spathiphyllum; the mouse plant, Arisarum proboscideum with its strange long-tailed spathes; the Arisaema's that have become so popular for collectors over recent years; the bog Arum, Calla pallustris; the Yellow Skunk Cabbage, Lysichiton americanus with its distinctive musky smell and the Flamingo Flower, Anthurium andraeanum.

6) Top plants to consider include: marsh marigold with yellow flowers, bog arum with white flowers, miniaturereed-mace, perfect for those who love bulrushes but don't have the space, water forget-me-not with stunningly pretty pale blue flowers, and bog iris with its rich purple blooms.

Marginals that flourish in depths up to 23cm (9in) include water mint, an attractive, fast-growing evergreen with mauve flower heads in summer; bog arum, Calla palustris, with long-lasting white spathes; and the magnificent Lobelia cardinalis, with dark red foliage and scarlet flowers on tall stems, which will also grow in shallower water.