These hardy waterlillies have one of the world's most glorious flowers, blooming from spring through to mid autumn.
They come in many colours including apricots, pinks, reds, whites and yellows while other are known as changeable as they will start one colour and change to another.
The glossy leaves have distinctively smooth edges and lay upon the water surface with the elegant, pointed petalled flowers held just above it.
Hardy Waterlillies all originate from cooler areas of the Northern Hemisphere and will survive frosts providing that the rhizome does not freeze.
They are distinguished from tropical waterlillies by the fact that hardy ones have short stems, while tropicals hold their flowers high above the water.
Hardy Waterlillies flower most profusely in longer days e.g. your latitude and season will affect the number of daylight hours in the day (more than 6 hours a day required for flowering).
White and paler pink varieties tend to flower less frequently than other colours.
Ambient temperature also affects them, so make sure it averages over 18c for best results.
High air temperatures, on the other hand, 9over 32c) may inhibit flowering and petal burn can also be a problem in very warm climates.