Heuchera 'Amethyst', 'Black Forest Cake'
- Scientific Name: Heuchera 'Amethyst', 'Black Forest Cake'
- Garden: Rain Garden
- Plant Type: Herbaceous Perennial
- Evergreen/Deciduous: Deciduous
- Sun/Shade Exposure: Part Sun to Part Shade
- Moisture Requirements: Moist, Well-Drained
Plant Information
Culture: Heuchera are hardy in the Northwest (zones 4–9), mostly evergreen, and usually like afternoon shade with well-drained soil.
Heuchera bloom early spring to late summer in shades from red to pink to white and make great cut flowers. Once established they can be drought-tolerant, but they enjoy regular water. Some of the purple and green leaved cultivars will handle full sun. The top four ways to kill a Heuchera are burying the crown, improper watering, planting in very heavy soil and growing in too low light.
Pests and Diseases: Root weevils can be problematic by feeding on the roots. This can be treated with nematodes at the correct soil temperatures. Mealy-bugs can also be a pest.
Maintenance: Heuchera are easy to care for and low maintenance. Dead-heading flowers (removing the spent blossoms) prolongs the bloom time.
Also, if the plants get a dry period in the summer, it might be necessary to cut off some the outer leaves if they start to look bad. During the winter, the plant may shrink to a smaller rosette and the dead outer leaves should be removed. If your heuchera forms a taller crown, it is time to divide it.