Bryophyllum laetivirens (Desc.) V.V.Byalt
Bryophyllum laetivirens is a succulent perennial.
Bryophyllum laetivirens was already described and the name validly published by Bernard M. Descoings. It was V.V. Byalt, however, who reclassified it into todays valid botanical systematics .
The perennials reach heights of 15 to 30 centimetres.
Bryophyllum laetivirens is evergreen. The simple leaves are opposite. They are ovate, crenate and petiolate.
Flowers and Fruits
Bryophyllum laetivirens produces panicles of pendant, light-green tubular flowers from January to March.
The perennials produce follicles.
Bryophyllum laetivirens is native to Madagascar and the Comoros.
The perennials prefer a sunny to half-shady situation on dry to moderately moist soil. The substrate should be gritty loam. They tolerate temperatures down to -7Â°C (USDA zone 9). Under glass use loamy potting compost with added gravel.
In summer the plants prefer protection from hot midday sun.
The perennials are suited for cultivation in a cold house and temperate house, growing the plants outdoors all year round is only possible in frost-free climates. Suited as container plant and as indoor plant.
Maintenance and Propagation
- For healthy growth apply a compound fertilizer every 6 weeks during growth.
- Water moderately in summer, give little water in winter.
Propagate by rooting plantlets.
Pests and Diseases
Waxy fibres and honeydew on leaves and shoots indicate an infestation with mealybugs. Apply insecticide or control biologically with predatory ladybirds.
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.
White tufts or white covering on the lower surface of the leaves indicates an infection with downy 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.
Leaf blotches are a sign of a fungal or bacterial infection. Bacterial spots are rather angular and yellow-rimmed while fungal spots usually are rather rounded with an area of fruiting bodies. Destroy affected parts, additionaly apply fungizide it is is a fungal infection.
- 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.