Lonicera sempervirens[a] (also coral honeysuckle, trumpet honeysuckle, or scarlet honeysuckle) is a species of honeysuckle native to the eastern United States but can grow in many areas due to its hardiness Most often grown as a plant for wildlife, ruby-throated hummingbirds use it in their natural range as well as other birds, butterflies, and bees. It is also grown as an ornamental for its attractive flowers, especially as a native alternative to the invasive Japanese honeysuckle. Several cultivars have been selected for variation in flower color, including 'Magnifica' (flowers red outside, yellow inside), 'Sulphurea' (yellow flowers), and 'Superba' (bright scarlet flowers).
The plant is evergreen in zone 8 and warmer and deciduous in colder climates. It is a twining vine growing to 20 ft or more through shrubs and young trees. The leaves are produced in opposite pairs, oval, up to 5 cm long and 4 cm broad; the leaves immediately below the flowers are perfoliate, joined at the base in a complete ring round the shoot. The flowers are produced on new growth in clusters of several groups of three together, tubular, 5 cm long, with five small lobes opening at the tip to expose the stamens and stigma. Ruby-throated hummingbirds and insects pollinate the bright red to pinkish-red flowers from mid-spring to fall.
- Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
- USDA Plants Profile: Lonicera sempervirens
- Gilman, Edward F. (2015-08-14). "Lonicera sempervirens Trumpet Honeysuckle". edis.ifas.ufl.edu. Retrieved 2017-06-30.
- Operation Rubythroat "Top Ten" Native Hummingbird Plants: Lonicera sempervirens
- "Lonicera sempervirens". plants.ces.ncsu.edu. Retrieved 2017-06-30.
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
- "RHS Plant Selector - Lonicera sempervirens". Retrieved 26 June 2013.
- Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.[page needed]
- Missouriplants: Lonicera sempervirens
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