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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names aeonium 'Zwartkop'
Synonyms Aeonium arboreum 'Arnold Schwarzkopff' Aeonium arboreum 'Zwartkop'
Aeonium arboreum
Family Crassulaceae
Genus Aeonium are evergreen succulents often of shrubby habit, with fleshy leaves in terminal rosettes on the shoots, and racemes or panicles of small, star-shaped flowers with numerous narrow petals
Details A succulent evergreen perennial of open habit, with rosettes of deep blackish-purple leaves, and large panicles of small, starry, bright yellow flowers in early spring
Foliage Evergreen
Habit Bushy
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1C
Full Sun
Aspect West-facing or South-facing
Exposure Sheltered
Loam
Sand
MoistureWell-drained
SoilLoam, Sand
pHAcid, Alkaline, Neutral
Ultimate height 1-1.5 metres
Ultimate spread 1-1.5 metres
Time to ultimate height 2-5 years
Cultivation Grow under glass in a loam-based potting compost with added extra grit. Water moderately when in growth, not at all when dormant. Apply a balanced liquid fertiliser 2 or 3 times in the growing season
Propagation Propagate by seed sown at 19-24°C in spring or by cuttings of rosettes kept at 18°C and barely moist until rooted
Suggested planting locations and garden types Architectural Coastal City & Courtyard Gardens Sub-tropical Mediterranean Climate Plants
Pruning No pruning required
Pests Can get aphids and mealybugs
Diseases Generally disease free
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