Hedychium coronarium, White Ginger

Hedychium coronarium
 White flowering Ginger

If you go to Hawaii you may be given a leis made up from the sweetly scented flowers of this ornamental Ginger, though these plants have become a bit of an invasive weed plant there.This one is native to India and south western China and grows to about 2 metres .The flowering stems can become a bit top heavy and lurch sideways so it is best given plenty of space to grow. Flowering continues well into April and old flowering stems are best cut off to keep the plant tidy and productive. It does best in a semi shaded position with a rich moist soil but will tolerate less fertile sites by growing less tall but still flowering.
2017 update: I no longer grow it because of its susceptibility to stem borer.