Aeonium Arboreum Zwartkop’s’
Other names: Black Tree Aeoniums, Aeonium 'black Rose', Purple Crest Aeonium, Aeonium 'blacktop', Aeonium 'black Beauty', 'black Tree' Aeonium
Aeonium arboreum ‘Zwartkop’s’ (Black Rose, Black Tree Aeoniums) distinctive feature is their beautiful dark purple, almost black foliage. Like all aeoniums, Aeonium arboreum ‘Zwartkop’ has striking rosettes that look like flowers and are made up of waxy leaves.
They really add contrast to your succulent garden because of their unique shape and color. To maintain its dark purple color, it needs plenty of sun.
Aeonium arboreum grows as a less branched subshrub and reaches stature heights of up to 2 metres.
The more or less upright or ascending, smooth, not net-like patterned stem axes have a diameter of 1 to 3 centimetres. Their leaves are in flattened rosettes with diameters of 10 to 25 centimetres at the end of the stem axes together. Young leaves are pressed tightly together. The obovate to oblate lanceolate leaf blade is pointed toward its apex and wedge-shaped at the base. It is 5 to 15 inches long, 1 to 4.5 inches wide and 1.5 to 3 millimetres thick. The green, usually purple-colored, glossy leaf surface is almost bare. The leaf margin is set with curved eyelashes.
The conical to ovate inflorescence has a length of 10 to 25 centimetres and a diameter of 10 to 15 centimetres. The inflorescence stem is 5 to 20 inches long. The flowers sit on a 2 to 12 millimetres long, slightly fluffy flower stem. Its sepals are also slightly fluff-haired with a pointed top and wedge-shaped base that is smooth and shiny green, red or purple. The yellow, narrow oblong to lanceolate, pointed petals are 5 to 7 millimetres long and 1.5 to 2 millimetres wide. The stamens are bare. It bears rosettes of leaves and large pyramidal panicles of bright yellow flowers in the spring.
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Humidity
Dry
Lighting
Full Sun
Hardiness zone
9b - 11b
Difficulty
Medium
In the winter, water whenever the top inch of soil has dried out. Test by poking your finger down into the soil an inch or two. These plants do like more moisture than many other succulents, but too much moisture or allowing them to sit in wet soil will cause root rot.
The aeonium black rose doesn't require pruning, but if your purple rose succulent gets a little too tall for your space, you can cut the stems about 4 inches below the leaves to give the plant a little less legginess.
Feed during the growing season with a half-strength balanced fertilizer every month or so. Do not feed while dormant.
Like many other succulents, Aeoniums require full sun. This will intensify their color and make the plants almost fully black. However, during hot summers or in desert conditions, light shade may be necessary to avoid sun burns.
Just like with any other succulents, Aeonium arboreum 'Zwartkop' (Black Rose) needs well-draining soil. We advise using a cactus potting mix combined with perlite for extra drainage.
Aeonium arboreum is not cold hardy, so if you live in a zone that gets colder than 30°F (-1.1°C), it's best to plant this succulent in a container that can be brought indoors. It shows off its deep color in full sun.
Container should provide ample drainage and room for growth.
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