Woodland, hedges and grassland.
Primrose flowers contain both male and female parts. But there are two different forms of flower, first described by Charles Darwin. The first type is ‘Pin–eyed’, where the stigma (female part) sticks out, while the anthers (male part) are hidden. While in the second type ‘Thrum – eyed,’ they are the opposite way round. This helps create greater genetic diversity as it is thought to encourage cross fertilisation. Primroses also have a ‘self-incompatability’ mechanism that stops the eggs being fertilised by its own pollen.