Bignonia capreolata ‘Atrosanguinea’, derived from a species native to the central and eastern United States, is a woody climber with fragrant spring flowers. It differs from the species through its much darker purplish-red trumpets and generally more moderate growth. Its tendrils, equipped with adhesive discs, allow it to quickly cover sturdy supports.
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The foliage may become semi-evergreen or deciduous during cold winters. The stated dimensions represent an average mature size, and growth can be restricted through regular pruning.
Characteristics of Bignonia capreolata ‘Atrosanguinea’
This trumpet vine develops long woody stems bearing opposite leaves composed of two glossy, leathery leaflets. A branched tendril ending in small adhesive discs forms between the leaflets. The dark green foliage frequently develops reddish-purple tones in cold weather. In May and June, clusters of dark red to purplish-red tubular flowers appear along the stems. Their spicy fragrance is often compared to roasted coffee or chocolate. ‘Atrosanguinea’ is mainly distinguished from the species by its deeper flower colour and its generally more restrained height.
How to use Bignonia capreolata ‘Atrosanguinea’?
This climber is suitable for covering a pergola, arbour, fence, wire mesh or large trellis. It may also be grown against a sound wall, although its adhesive discs may mark fragile render or damaged mortar joints. In such situations, install wires or a separate supporting structure. Its dense foliage can create a plant screen that remains evergreen in mild climates and becomes seasonal in colder regions. It may also be trained over a sturdy tree trunk or used as ground cover on a bank. Container cultivation requires a pot of at least 50 litres and regular pruning.
What are the recommended cultivation practices for Bignonia capreolata ‘Atrosanguinea’?
Plant in spring or early autumn, in sun or partial shade, in a warm position sheltered from cold winds. Fertile, humus-rich, moisture-retentive and well-drained soil encourages healthy growth. Position the root ball 30–50 cm away from the support and allow approximately 2–2.50 m between plants. Water regularly during the first two growing seasons, then throughout prolonged dry periods. Apply mature compost in spring without excessive nitrogen. Guide young stems towards the support. Prune after flowering to control growth and remove root suckers where their spread is not required.
