Pinkladies (Oenothera speciosa)

The evening primrose (Oenothera speciosa), commonly known as pinkladies, originates from the grasslands of the Central United States. It has rapidly spread beyond its native range and is now found in 28 states across the US, extending as far south as Chihuahua and Coahuila in Mexico. Often used as an ornamental ground cover due to its appealing flowers, it has a tendency to escape from gardens and naturalize in new areas.