The common evening primrose carries a cluster of flowers on its long stem from May onwards and is remarkable for the fact that the flowers only bloom for a short period and from dusk onwards. During the day, the plant is unremarkable as it only carries buds and dead flowers but from dusk it has a cluster of vivid flowers, with a pleasant lemon aroma. The flowers are withered by morning and a cluster of buds is waiting to open the following morning.
The sundrops evening primrose (Oenothera fruticosa) is the exact opposite of the common evening primrose and only flowers in the day. This variety has the same characteristics as the common variety but saves its magnificent flowers for daytime spectators. It performs to its fullest potential in full sun locations.
The Mexican evening primrose (Oenothera berlandieri) is similar to common varieties but its flowers are a pretty shade of pink. While, the showy evening primrose (Oenothera speciosa) is often classified as a weed, yet also has spectacular pink blooms.
It is easy to grow evening primrose in the home garden; however, you should be aware that it can become invasive. Buy your plants from reputable growers, rather than digging up plants from their native habitat, as it is not recommended to dig up native species and they could also bring infections to your other plants.