Description
Hamamelis is a genus of deciduous shrubs native to North America and Asia. They are commonly known as witch hazels and are prized for their showy, fragrant flowers that bloom in late winter to early spring. Here are some horticultural notes on the genus Hamamelis, including popular cultivars:
Climate requirements: Hamamelis plants grow best in areas with cold winters and mild summers. They require a period of winter chill to bloom properly, and can tolerate frost and snow.
Watering: Hamamelis plants require moderate watering, and the soil should be kept evenly moist. They can tolerate some drought, but too much can cause stress and damage.
Soil: Hamamelis plants prefer well-drained soils that are slightly acidic to neutral in pH. They can grow in sandy, loamy, or clay soils, as long as they are well-drained.
Fertilizer: Hamamelis plants do not require fertilizer, but a light feeding of a balanced fertilizer in early spring can promote growth and flowering.
Pruning: Hamamelis plants should be pruned lightly after flowering to maintain their shape and promote bushy growth.
Propagation: Hamamelis plants can be propagated from seed, but this can take several years for the plant to mature. It is more common to propagate through softwood cuttings taken in early summer, or by layering.
Pests and diseases: Hamamelis plants are generally free from pests and diseases, but they can be affected by aphids, spider mites, and leaf spot. Treat with appropriate pesticides or fungicides as necessary.
Cultivars: There are many cultivars of Hamamelis available, offering a range of flower colours and growth habits. Some popular cultivars include:
Hamamelis x intermedia ‘Arnold Promise’: A large shrub with fragrant, yellow flowers that bloom in late winter. It has a spreading growth habit and is often used as a specimen plant.
Hamamelis vernalis ‘Sandra’: A compact shrub with fragrant, red flowers that bloom in late winter. It has a mounding growth habit and is often used in mixed borders and as a specimen plant.
Hamamelis mollis ‘Pallida’: A large shrub with fragrant, pale yellow flowers that bloom in late winter. It has a spreading growth habit and is often used as a specimen plant.
These cultivars are often used in landscaping, as they provide a variety of flower colours and growth habits. They are also popular in cut flower arrangements and as a winter-blooming plant.