Aeonium zwartkop

  • Aeonium zwartkop


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Aeonium zwartkop

  • Names and Synonyms:  
    A. manriqueorum 'Schwartzkopf', 'Schwartzkopf', Aeonium arboreum var. atropurpureum f. nigrum, Aeonium arboreum var. atropurpureum f. cristata, Aeonium atropurpureum cv. Black Rose
  • Common Names:  
    Large Purple Aeonium, Black Rose, Purple Crest Aeonium, Black Beauty, Aeonium 'Blacktop', Black houseleek tree
  • Family:  
  • Origin:  
    Aeonium arborescens is native to Gran Carnaria Island in the Canary Islands
  • Height:  
  • Width:  
  • USDA Zones:  
  • Cold Tolerance:  
    30° to 35°F; -1.1° to 1.7°C
  • Heat Tolerance:  
    Moderate heat tolerance
  • Light Requirement:  
    Part shade to full sun along the coast
  • Water needs:  
    Drought tolerant, water deeply, but infrequently.
  • Maintenance:  
    Remove spent flowered stalks as desired.
  • Uses:  
    This is a great plant for bringing contrasting dark foliage into xeriscape and low-water gardens. It looks spectacular when contrasted with gray or silver-blue foliage and is also interesting rising above grasses like Nassella Tenuissima. It also works well in containers – alone or combined with other succulents.
  • Propagation:  
    This plant can be propagated from stem cuttings or grown from seed. When stems become too tall, cut them and allow the cut to dry, then replant the cut stem. The old stem sprout new growth and eventually branch to become a multi-headed plant.
  • Problems:  
    Snails and slugs, and poor draining soils or overly wet conditions can cause root rot.
  • Special notes:  
    Aeonium zwartkop is a striking larger purple aeonium. It forms clumps of 3- to 4-foot tall stems topped with rosettes of purple black leaves. It is largely a winter grower and is somewhat dormant in warm, dry summers. The best leaf color is achieved with at least 3-4 hours of full sun. In spring, Aeonium zwartkop blooms, sending up conical clusters of small bright yellow flowers of typical crassulaceae structure. Flowering taxes the plant and blooming stems usually die. There is some disagreement over the name of this cultivar between the Dutch 'Zwartkop' and German 'Schwarzkopf' though both names mean "black head". This aeonium cultivar is more deer and snail resistant than many aeoniums. Note that mature plants may be hardy to 25°F, but leaf damage will occur below 28°F so plants should be protected below 30°F.