Nectar is the sweet liquid secreted by flowers to attract pollinators such as bees. It commonly contains 10-40% dissolved sugars, plus traces of other compounds. Nectar flow refers to the rate at which nectar is secreted by the flower; some produce nectar much more quickly than others. It is also a term used by beekeepers to refer to times of the year when particularly rewarding flowers are in peak bloom and honey is flowing in to their bee colonies in abundance.