Oenothera speciosa is a species of evening primrose known by several common names, including pinkladies, pink evening primrose, showy evening primrose, Mexican primrose, amapola, and even "buttercups". It is a herbaceous perennial wildflower.
The pink evening primrose is used in the temperate latitudes as an ornamental plant. However, it does not survive a severe winter. It is a ground cover. While it makes an attractive garden plant, care should be taken with it as it can become invasive, spreading by runners and seeds. This drought-resistant plant prefers loose, fast-draining soil and full sun. The plant's wild habitat includes rocky prairies, open woodlands, slopes, roadsides, meadows and disturbed areas.
Water only occasionally. The plant is very drought tolerant once established and limiting water can limit spread and overwatering can rot the plants. Left totally dry will make plants go drought dormant to reemerge in spring with moisture and warmer temperatures.
