Are you looking for it's significance in a specific book or in literature in general? For example, in The Hunger Games, Katniss' sister is named Primrose to show her fragile and innocent nature.
Primrose
A primrose is a type of flower. My mother has a lovely primrose in the garden.
The larva of Primrose moths eat the flower buds of Evening Primrose. The adults commonly feed on the nectar of various flowers.
Evening primrose?
It is a pretty and delicate white flower
primrose petunia
the only flower mentioned by name is Primrose.
Ratchaphruek (Golden Shower Tree)Primrose
Petunia, Primrose, Portulaca
Primrose Everdeen.
The Evening Primrose is a nocturnal yellow flower. This flower only blooms at night and is pollinated by nocturnal insects.
Primrose and primula are flowers.