About Oenothera glazioviana Micheli
Oenothera glazioviana Micheli is generally a biennial herb that grows an erect stem reaching a maximum height of almost 1.5 metres (4.9 ft). The whole plant is roughly hairy, and the hairs have reddish blistering or glandular bases. Its crinkly leaves can grow up to 15 centimeters long. The inflorescence is a showy spike holding many large flowers. Long red sepals are visible when the flowers are still in bud. When open, each flower has four bright yellow petals up to 5 centimeters long, which fade to orange then red as they age. The fruit is a lance-shaped capsule 2 to 3 centimeters long. Oenothera glazioviana originated as a garden hybrid between Oenothera elata and Oenothera grandiflora in Europe. It is cultivated as an ornamental plant, and has become naturalized in many countries across the world, including Britain and Ireland, where it is the most common species in its genus. Described under the synonym Oenothera lamarckiana, this species is very adaptable, but it requires full sun, average moisture, and well-drained soils. It grows easily from seed, and was first cultivated in European gardens during the 1800s.
