Amerosedum divergens S.Watson
Amerosedum divergens is a succulent perennial.
Amerosedum divergens was already described and the name validly published by Sereno Watson. It was Ãskell LÃ¶ve and Doris Benta Maria LÃ¶ve, however, who reclassified it into todays valid botanical systematics in 1985.
The perennials reach heights of 6 to 12 centimetres.
Amerosedum divergens has dark-green, simple leaves that are decussate. The leaves are spatulate, entire and sessile.
Flowers and Fruits
Amerosedum divergens produces cymes of yellow five-stellate flowers from May to September.
The perennials produce follicles.
Amerosedum divergens is native to British Columbia and the Northwest of the US.
The perennials prefer a sunny situation on fresh to moist soil. The substrate should be gritty loam. They tolerate temperatures down to -23Â°C (USDA zone 6). Under glass use loamy potting compost with added gravel.
In summer the plants prefer good ventilation.
Maintenance and Propagation
- For healthy growth apply a compound fertilizer at 50% concentration monthly during growth.
- Water moderately in summer, give little water in winter.
- Sowing seed in a cold frame in autumn
- Cuttings in early summer
- Division in spring
All plant parts may cause slight discomfort if consumed. The sap may irritate the skin
Please read the health issues note!
Pests and Diseases
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.
Damaged roots, withering, decolouration and dieback of leaves and shoots may be caused by stagnant moisture, fungi or bacteria. Remove affected plants. Prevent by improving hygiene and drainage.
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.
Scale insects that sit on the undersides of the leaves and excrete honeydew can be controlled with insecticide or biologically with parasitic wasps.
Waxy fibres and honeydew on leaves and shoots indicate an infestation with mealybugs. Apply insecticide or control biologically with predatory ladybirds.
Small dark-coloured beetles feeding on the plants are very likely vine weevils. Their larvae feed on seedling, cuttings, roots and tubers. Handpick and destroy pests and improve hygiene. Additionaly use insecticide or biological control (nematodes).
- 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.