Q I have a range of water lilies, but they don't flower and look sad. What am I doing wrong?
A Water lilies need a warm, sunny position to do well, and prefer still water, so are best planted away from fountains or pumps. New water lilies may take a few years to build up enough reserves to start flowering. After that, failure to flower can be due to being planted too deeply. If you know what varieties you have, turn to a pond reference book or catalogue and raise the baskets on bricks if necessary. Alternatively, the plants may need feeding. Every summer, feed with a special water-lily fertiliser tablet, pushing it deep into the soil close to the roots.