Streptosolen

Streptosolen closeup

Browallia americana closeup

William Jameson, por Antonio Salas (1842)

Huperzia dentata (habitus)

Streptosolen jamesonii stigma & stamens

Streptosolen jamesonii ( Solanaceae, subfamily Cestroideae )

Streptosolen is a genus of flowering plants within the family Solanaceae, which is known for comprising important plants such as tomatoes, potatoes, and tobacco. The genus Streptosolen is native to South America, particularly found in countries like Colombia, Venezuela, Ecuador, Peru, and Bolivia. The most well-known and widely cultivated species within this genus is Streptosolen jamesonii, commonly referred to as the marmalade bush.

Description

Streptosolen jamesonii features dense, evergreen foliage and produces vibrant, orange to yellow flowers that bloom in waves throughout the year, especially from late winter to summer. The flowers are tubular, resembling those of its distant relatives in the Solanaceae family, and are highly attractive to pollinators such as bees and butterflies. The plant can grow up to 2 meters in height and spreads out, making it an excellent choice for use in ornamental hedges or as a stand-alone specimen in gardens.

Cultivation

Streptosolen prefers well-drained soils and a position that receives full sun to partial shade. While it is tolerant of a range of soil types, optimal growth is achieved in rich, loamy soils. Regular watering is essential, especially during dry periods, but the plant is relatively drought-tolerant once established. Pruning is recommended to maintain a desirable shape and to encourage bushier growth and more prolific flowering.

In regions with colder climates, Streptosolen jamesonii is often grown in containers and brought indoors or to a protected area during the winter months, as it is not frost-tolerant. Propagation is typically achieved through semi-hardwood cuttings.

Uses

Beyond its ornamental value, Streptosolen jamesonii does not have significant uses. However, its vibrant display and ease of care make it a popular choice for gardeners looking to add color to their outdoor spaces.

Conservation

There are no immediate conservation concerns for Streptosolen jamesonii due to its wide cultivation. However, preserving the natural habitats where it and other Streptosolen species occur is essential for the conservation of biodiversity within the Solanaceae family.