This term refers to those varieties of fruit trees which can set a good crop with their own pollen. Most soft fruits are self-fertile, but with apples, pears, plums and cherries nearly all varieties demand a pollinator, I.e. another variety flowering at the same time to ensure cross-fertilisation. Even those apples usually described as self-fertile, such as Laxton’s Superb and Laxton’s Advance, usually crop better if interplanted with one or more pollinators. See the lists of recommended varieties under APPLE, etc., for names of suitable pollinators.