Mexican evening primrose is a favorite for its glorious displays of pink blossoms. In early spring this groundcover produces carpets of delicate light to dark pink flowers, and can continue to flower into the summer if adequate water is provided. This plant is fairly inconspicuous the rest of the year, and usually goes dormant in the summer heat and winter cold. This plant has underground stems, which allow it to bounce back from any damage to the foliage. These underground stems can be invasive, so it is best to use it in a confined space. Simply cut this plant back whenever it looks ratty to encourage new growth. Mexican evening primrose can be planted in full sun or under the canopies of desert trees. Flea beetles can quickly devastate plants in the spring and fall, but are easily controlled with insecticides.