A single red rose.
Since time immemorial an unmistakable sign of love.
There is no easier way of expressing the depth of your emotion than walking into a florist and asking for a bouquet of red roses, and more will be sold on Valentine's Day than any other.
But which should you choose? Euan Mcilwraith travels to Ecuador to discover that this simple symbol, recognised the world over, has as many shades and complexities as love itself.