Cultivar · genus Aeonium
Zwartkop
Aeonium arboreum · ‘Zwartkop’
Guide
Written and kept by people who grow it. Every section carries its source.
Sun, grit and infrequent water
Grow in a peat-free, loam-based compost with extra grit, in full sun. Water moderately while in growth and not at all when dormant, and feed with a balanced liquid fertiliser two or three times in the growing season.
Source: RHS
Care recipe
Each fact carries its confidence tier — and says whether it belongs to this cultivar or is inherited from the species.
Care notes reviewed by Horta
- Soil
- ai:claude-code
Direct sun
≈ every 21 days
Low — average room
10–27 °C
peat-free, loam-based compost with added grit
rosette cuttings; seed sown in spring
balanced liquid fertiliser 2 or 3 times in the growing season
Moderate
Large panicles of small, starry, bright yellow flowers in early spring
Not yet documented
Toxicity is a species-level safety fact. This is where toxicity lives: every cultivar inherits it and none can override it.
Reference images
Every image credited. Licenses link to their deeds.
PrimarySources: ai:claude-code
Kept true by its growers
Every fact here carries its source. Grow ‘Zwartkop’ yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — and a clear photo of your plant are exactly what keep this page honest. Contributions are reviewed before anything changes.
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