Aeonium arboreum var. atropurpureum f. nigrum 'Schwarzkopf'
Black Rose, Black Beauty, Black Tree Aeonium, Black Aeonium
Aeonium arboreum var. atropurpureum, Aeonium arboreum 'Zwartkopf', Aeonium arboreum var. artopurpureum 'Schwarzkopf'
Bloom Time: Mid-spring to early summer
Aeonium arboreum 'Zwartkopf' is a striking succulent with gray-brown stems that often branch near their base. It grows up to 3 feet (90 cm) tall. The long bare stems hold large terminal rosettes of very dark purple, almost black leaves. The rosettes are up to 8 inches (20 cm) in diameter. Flowers are bright yellow, star-shaped, and appear in large conical clusters.
USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
Water Black Roses deeply until the water drains through the bottom of the container about once a week from March through September. Allow the soil to dry until it's slightly moist at the root level between waterings. During the winter, reduce watering to once a month. Black Roses planted in the ground require less watering than container plants, so feel the soil a few inches down near the roots to check for moisture. If it feels completely dry, water deeply.
Fertilize with water-soluble 10-10-10 fertilizer diluted to half-strength once a month from May through September.
Spray Black Roses with insecticidal soap or neem oil thoroughly at the first sign of aphids or pests. Repeat this weekly until the pests are gone. See more at How to Grow and Care for a Black Rose Aeonium.
Cultural problems can cause massive damage to Black Rose plants, including leaf loss. Soggy soil and over-watering are perhaps the most common and serious cultural issues for Black Rose plants because too much water will drown the roots and lead to root rot, particularly during cold weather. See more at Why Are Leaves Falling Off My Black Rose?
Aeonium arboreum 'Zwartkop' is a popular cultivar of Aeonium arboreum.
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