Aeonium decorum 'Cooperi'
Aeonium decorum 'Cooperi' is an evergreen, perennial, bushy shrub up to 10 inches (25 cm) tall, with up to 3 inches (7.5 cm) wide rosettes, clustered on thick branches. The leaves are obovate to lanceolate, green, up to 2 inches (5 cm) long and 0.6 inch (1.5 cm) wide, with bright red-edged in full sun. The inflorescence rises above the foliage, bearing small soft pink flowers.
USDA hardiness zone 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
If you have the proper growing conditions, Aeonium will take care of themselves and actually thrive on neglect. Otherwise your major task will be moving them from hot sun to shade and back again, or moving them indoors when the temperature drops too low.
Aeonium have underdeveloped root systems, since they store their water in their leaves and stems. The have the ability to produce roots along their stems, which you may notice if the plant gets pot bound or the stems falls and touches soil. Leggy branches do tend to fall over and snap off, from the weight of the rosettes. If this happens, you can repot the broken stem… – See more at: How to Grow and Care for Aeonium
Propagate Aeoniums by stem cuttings, except for unbranched species which die after flowering and are propagated from seed. Take cuttings when the plant is actively growing, usually fall in USDA zones 9 through 11. Aeoniums go dormant in summer; cuttings taken while plants are dormant don't root. Each leaf rosette dies after it blooms…. – See more at: How to Propagate Aeonium
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Aeonium Decorum Cooperi is one of the most beautiful, evergreen, perennial, bushy shrub that grows up to 25 cm (10 inches) tall, with up to 7.5 cm (3 inches) wide rosettes, clustered on thick branches. The leaves are obovate to lanceolate, green, up to 5 cm (2 inches) long and 1.5 cm (0.6 inches) wide, with bright red-edged in full sun. The inflorescence rises above the foliage, bearing small soft pink flowers.
Aeonium decorum var. guarimarense is an excellent evergreen, perennial, densely branched shrub up to 75 cm (30 inches) tall. It is more robust in all parts than Aeonium decorum. In the bright shade, the mid-green leaves will display orange-rosy tones with red edging. The red coloring totally intensifies very showily in full sun areas. The angled inflorescence rises above the foliage, bearing lovely soft pink starry blossoms in late spring.
Scientific Name: Aeonium decorum var. guarimarense
Common Names: Giant Houseleek
It thrives best in full sunlight to part sunlight in a sheltered spot, but the bright light enhances the rich hues of the darker Aeoniums.
It grows well in humus-rich, moist but well-drained, any good potting mix soil.
It prefers ideal temperatures of 65ºF – 75ºF / 18ºC – 24ºC and no lower than 50ºF / 10ºC.
Water moderately but consistently during the growing season, Keep the soil moist but not soggy. Allow the top one inch of soil to dry out between waterings. During the winter reduce watering to a minimum.
Fertilize your plant once every 2 weeks during the active growth period with a balanced liquid fertilizer diluted by half. Do not feed while dormant.
It can be easily propagated by seed or by stem cuttings. Sow seed at 19-24ºC in spring. Take cuttings of rosettes in the spring and kept at 18ºC and barely moist until rooted.
Pests and Diseases:
It has no serious pest or disease problems. Slugs can do some damage and the occasional bird may take a bite.
Most aeoniums grow well without fertilizer and too much fertilizer can lead to weak, spindly growth and discoloration in otherwise healthy plants. The exception is for container-grown aeoniums, which can quickly exhaust their soil during the growing season. Usea slow release, 14-14-14 fertilizer that is specially formulated for cactuses and succulents. Apply it in spring after new growth emerges and again in midsummer. Use 1 teaspoon fore each 1 gallon of soil, and apply it evenly to moist soil.