So, these are different plants. O. Berlandieri, or Mexican evening primrose is a spreading perennial that grows to a height of only one foot. Common evening primrose, Oenothera biennis L., can grow as tall as 6 feet. This plant is a biennial which produces leafy stalks the first year, which are adorned by large, lemon-yellow flowers in the plant’s second year of life.
Common evening primrose is a native with special value to our bees and a food source for birds, wildlife, moths, and many pollinators, including the sachem skipper (Atalopedes campestris). See the Lady Bird Wilflower site to learn more about common evening primose. https://www.wildflower.org/plants/result.php?id_plant=OEBI
So, these are different plants. O. Berlandieri, or Mexican evening primrose is a spreading perennial that grows to a height of only one foot. Common evening primrose, Oenothera biennis L., can grow as tall as 6 feet. This plant is a biennial which produces leafy stalks the first year, which are adorned by large, lemon-yellow flowers in the plant’s second year of life.
Common evening primrose is a native with special value to our bees and a food source for birds, wildlife, moths, and many pollinators, including the sachem skipper (Atalopedes campestris). See the Lady Bird Wilflower site to learn more about common evening primose. https://www.wildflower.org/plants/result.php?id_plant=OEBI