Campanula portenschlagiana Schult.
Campanula portenschlagiana is a perennial.
Campanula portenschlagiana was described by Josef August Schultes. The name is considered as validly published.
Campanula portenschlagiana is a species in the genus Campanula which contains approximately 503 to 622 species and belongs to the family of the Campanulaceae (Bellflower Family). The type species of the genus is Campanula latifolia.
The perennials have a clumpforming habit and reach heights of 10 to 15 centimetres.
Campanula portenschlagiana is evergreen. The mid-green, simple leaves are alternate. They are reniform with dentate margins. The leaves are around 10 to 20 centimetres large and have a glabrous surface.
Flowers and Fruits
Campanula portenschlagiana produces panicles of purple funnel-shaped flowers from June to August.
The perennials produce poricidal capsules.
Campanula portenschlagiana is native to Croatia and Bosnia-Herzegovina.
The perennials prefer a sunny to half-shady situation on moist soil. The substrate should be sandy-loamy or gritty-loamy soil with a pH between 8 and 10. They tolerate temperatures down to -35Â°C (USDA zone 4). In winter the plants prefer frost-free conditions.
Classification after Prof. Dr. Sieber
Tolerance of special soil conditions
- none: waterlogging
Campanula portenschlagiana is considered a very valuable wild perennial. The recommended planting distance is 25 to 30 centimetres, the perennials are best planted in groups of 3 to 5. Suited for cottage gardens, moorland gardens, rockeries, roof greening, beds and borders, hanging baskets, balconies and terraces and for conservatories, as well as suited as container plant and as bee pasture.
Maintenance and Propagation
The plants need little to no maintenance if grown under suitable conditions.
- For healthy growth apply a compound fertilizer every 2 to 3 weeks during growth.
- Cut back before seeds ripen to prevent self-seeding.
Pests and Diseases
Honeydew, galls and distorted leaves are a sign for an infestation with aphids. Use an insecticide or control biologically , e.g. with parasitic wasps or predators such as Aphidoletes aphidimyza.
Fine webs on the plants indicate an infestation with red spider mites. These sap-sucking insects mainly appear under glass and can be controlled either with insecticide or biologically with parasitic mites.
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.