General Plant Information (Edit)
Plant Habit: Cactus/Succulent
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Minimum cold hardiness: Zone 9b -3.9 °C (25 °F) to -1.1 °C (30 °F)
Plant Height: Up to 3-4 feet
Plant Spread: 1-2 feet
Leaves: Unusual foliage color
Flowers: Showy
Flower Color: Yellow
Bloom Size: Under 1"
Flower Time: Winter
Suitable Locations: Xeriscapic
Uses: Provides winter interest
Will Naturalize
Wildlife Attractant: Bees
Resistances: Drought tolerant
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Cuttings: Leaf
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil
Goes Dormant
Awards and Recognitions: RHS AGM
Parentage: Sport of: Atropurpureum
Child plants: 9 child plants

Common names
  • Purple Crest Aeonium
  • Black Rose
  • Black Tree Aeonium
Also sold as:
  • Aeonium arboreum atropurpureum 'Zwartkop'
  • Aeonium manriqueorum 'Zwartkop'
  • Aeonium 'Schwarzkopf'
  • Aeonium 'Schwartzkopf'

Photo Gallery
Location: KALAMA WA
  • Uploaded by Joy
Location: New Zeland
Date: 2012-12-19
Location: Baja California
Date: 2021-02-09
Location: Baja California
Date: 2019-10-08
Location: Bay Area California
Sea of zwartkop, with some Zwartkop hybrids int he background.
Location: Baja California
Date: 2020-03-12
Late winter growth and branching
Location: Baja California
Date: 2020-12-07
Branching after beheading
Location: San Diego Botanical Garden, Encinitas, California
Date: 2013-04-01
Location: RHS Hyde Hall, Essex.UK.
Date: 2022-07-25
Location: Baja California
Date: 2017-02-09
Location: Baja California
Date: 2020-07-03
Early summer
Location: Coastal San Diego County 
Date: 2019-01-29
Location: Washington
Date: 2016-07-13
Location: Kalama, Wa.
  • Uploaded by Joy
Location: Bay Area California
Date: February 2022
Aeonium Zwartkop in a plant combination.
Location: Coastal San Diego County 
Date: 2018-04-20
Location: Baja California
Date: 2019-03-10
Beheaded to force more branching
Location: Barson's Greenhouse, Westland, MI
Date: 2009-06-01
Location: Laurel, Montana
Date: 2022-03-14
Location: Baja California
Date: 2016-03-03
Location: Berkshire UK
Date: Spring
Frosts now over so about to plant out this beauty, breakages alwa
Location: San Jose, CA in my garden
Date: April, 2008
Location: Bay Area California
Date: December 2021
Flower head scape
Location: RHS Harlow Carr, Yorkshire, UK
Date: 2017-07-14
Location: Baja California
Date: 2016-03-03
Location: Outside
Date: 7/27/2011

Date: 2013-02-26

Date: 2013-02-23
Location: Bay Area California
Date: December 2021
Winter interest
Location: San Jose, CA, in my garden
Date: Feb. 2008
Close up of one of the tiny blooms

Date: 2017-02-19
Right after rain

Date: 2017-02-19
Location: Plymouth Nursery, Plymouth, MI
Date: 2010-10-10

Date: 2011-12-17
Location: Cooks Nursery, Orem, Utah
Date: 2011-12-17
Location: Tampa, Florida
Date: Early spring 2013
Baby Aeonium zwartkop, one of my rescue plants.
Location: In our garden - San Joaquin County, CA
Date: March 2014
Aeonium 'Zwartkop' rosette head movement
Location: At our garden - Tracy, CA
Date: 2011-10-13
Tall Aeonium arboreum
Location: Pacific Northwest, zone 8
Date: Feb 18, 2012
Photo taken at Al's Garden Center, Woodburn, Oregon
Location: Berkshire UK
Date: 2017-05-16
Taking Aeonium Zwartkop cuttings
Location: Botanische Garten der Universitaet Wien
Date: 2016-10-15
Location: San Jose, CA in my garden
Date: April, 2008
Location: Chanticleer Garden
photo by Derek Ramsey.

Date: 2013-01-25

Date: 2013-01-25
Location: Plymouth Nursery, Plymouth, MI
Date: 2010-10-10
Location: Tower Hill Botanic Garden in Boylston, MA
Date: 2014-10-12

Date: 2013-01-25
Location: Cooks Nursery, Orem, Utah
Date: 2011-12-17

Date: 2011-12-17
Location: Lutz, FL
Date: 2016-04-25
For sale at Lowe's

Date: 2012-11-02
Location: KALAMA WA
  • Uploaded by Joy

Photo courtesy of: Rod Waddington

 Photo Courtesy of Mountain Crest Gardens. Used with permission.
  • Uploaded by Joy

Date: 2011-12-17

Date: 2011-12-17

Date: 2012-11-02
Location: Berkshire UK
Date: 2017-05-28
Cutting of the stalk of Zwartkop and it has started to bud up aft

Photo courtesy of Annie's Annuals and Perennials
  • Uploaded by Joy
This plant is tagged in:
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  • Posted by Baja_Costero (Baja California - Zone 11b) on Jun 4, 2017 3:51 PM concerning plant:
    Distinctively dark purple-leaved Aeonium cultivar which branches and can grow to 3 feet tall or so, plus flowers. Best color in full sun. Like all Aeoniums, this plant is a winter grower (active from fall though spring) and it rests in summer. It demands the absolute maximum amount of natural light to be viable as a house plant (a position right in front of a sunny window) and almost always does better outside, climate permitting.

    This plant, whose name means "black head" in Dutch, has been labeled with a variety of misspellings including the name in German. It is a parent of various outstanding hybrids bred and selected by Jack Catlin, including "Cyclops" and "Voodoo" (with undulatum); "Zwartkin" and "Jack Catlin" (with tabuliforme); "Blushing Beauty", "Plum Purdy" and "Velour" (with canariense). "Zwartkop" is also a parent of "Cabernet" (with simsii).
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Sep 9, 2011 6:49 AM concerning plant:
    This plant can become a large spreading bush with multiple branches. May reach heights of 4 ft. under ideal conditions.
  • Posted by Aeonium2003 on May 3, 2022 8:44 PM concerning plant:
    One of the most common parent plants in Aeonium hybrids, including Zwartkop x simsii (bred for cold tolerance, and low growing form), Zwartkop x undulatum (bred for large size), Zwartkop x canariense (bred for large size and low growing growth habit), and Zwartkop x tabuliforme (bred for compact rosette and low growth). Several complex hybrids involving Zwartkop include the patented 'Mardi Gras', 'Bing thing', 'Phoenix Flame', 'Emerald Flame', and numerous other hybrids.
    This is perhaps one of the most common Aeoniums in cultivation, the others including A. haworthii, a green arboreum var arboreum form, and the Aeonium arboreum var. atropurpureum.
    Aeonium Zwartkop is a dutch selection from Aeonium arboreum var. atropurpureum. It was selected and bred throughout multiple generations for solid and dark black color.
Discussion Threads about this plant
Thread Title Last Reply Replies
My no ID Aneonium by GigiPlumeria Apr 7, 2013 7:31 PM 3
Mistaken identity? by Aeonium2003 Dec 15, 2021 9:13 PM 4

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