Ranunculus crenatus Waldst. & Kit.
Ranunculus crenatus is a perennial with pure white flowers.
Ranunculus crenatus was described by Franz de Paula Adam von Waldstein and PÃ¡l Kitaibel. The name is considered as validly published.
Ranunculus crenatus is a species in the genus Ranunculus which contains approximately 432 to 2271 species and belongs to the family of the Ranunculaceae (Buttercup Family). The type species of the genus is Ranunculus auricomus.
The perennials reach heights of 5 to 8 centimetres.
Ranunculus crenatus is semi-deciduous. The dark-green, simple leaves are basal. They are orbicular, crenate and petiolate.
Flowers and Fruits
Ranunculus crenatus produces solitary white cup-shaped flowers from June to July.
The perennials produce nutlets.
Ranunculus crenatus is native to Italy, the Balkan Peninsula, Romania, western European Russia, the eastern Alps, the Apennine Mountains, the Carpathian Mountains and the Balkan Mountains.
The perennials prefer a sunny situation on fresh to moist soil. The substrate should be gritty loam. They tolerate temperatures down to -29Â°C (USDA zone 5). Under glass use loamy potting compost with added gravel.
Classification after Prof. Dr. Sieber
- alpine garden (especially for plants that are not very competitive)
Suited for rockeries.
Maintenance and Propagation
Propagate by sowing just before seeds ripen. Germination may take some time.
The sap may irritate the skin
Please read the health issues note!
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.
A powdery white coat on the plants indicates an infection with powdery mildew. Remove affected plants and apply a fungicide. To prevent infection improve ventilation, keep the roots moist and do not water the plants from above.
Gnaw marks and slime trails indicate a problem with slugs. Prevent infestation by improving hygiene and by regularly working the soil. In case of an infestation use slug pellets or nematodes to control pest. Handpicking the slug also helps, do this preferably in the evening hours.
- 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.