Sorbus Eastern Promise

Description

Sorbus Eastern Promise, also known as Eastern Promise Mountain Ash, is a deciduous ornamental tree that belongs to the Rosaceae family. It is native to Asia, specifically China, Japan, and Korea. This tree can grow up to 20-30 feet tall and 15-25 feet wide. During spring, Sorbus Eastern Promise displays clusters of white flowers that can reach up to 4 inches in diameter. In fall, the tree bears clusters of red fruits that can last throughout winter. These fruits are not edible but provide a beautiful contrast against the tree’s colorful foliage.

Taxonomic Information

Appearance

Sorbus Eastern Promise has a vase-shaped habit with a broad crown. Its leaves are pinnate and composed of 11-17 leaflets. During spring and summer, the leaves are glossy green. In fall, the leaves turn yellow, orange, and red before falling off. The tree’s bark is grayish-brown and develops corky ridges as it ages. The tree’s white flowers bloom in early to mid-spring and are followed by clusters of red fruits that persist through winter.

Care Guide

Water

Sorbus Eastern Promise prefers moist, well-draining soil. It requires moderate watering during hot and dry weather to prevent drought stress.

Fertilization

Fertilize Sorbus Eastern Promise in early spring with a slow-release fertilizer formulated for trees and shrubs.

Soil

Sorbus Eastern Promise thrives in slightly acidic soil with a pH range of 5.5-6.5. It prefers well-draining soil that is rich in organic matter.

Sunlight

Sorbus Eastern Promise grows best in full sun to partial shade. It requires at least 4-6 hours of direct sunlight per day to produce healthy flowers and fruits.

Hardiness Zones

Sorbus Eastern Promise is hardy in USDA zones 4-8.

Common Pests & Diseases

Sorbus Eastern Promise is susceptible to several pests and diseases, including:- Fire blight- Powdery mildew- Cedar-apple rust- Spider mites- Japanese beetlesTo prevent these problems, it is important to maintain good cultural practices, such as proper watering, fertilization, and pruning. Additionally, regular monitoring and early detection can help prevent pest and disease outbreaks.

Habitat

Sorbus Eastern Promise is native to China, Japan, and Korea. It grows in a variety of habitats, including mixed forests, mountain slopes, and riverbanks.

Question and Answer

Q: Can Sorbus Eastern Promise be grown in containers?

A: Yes, Sorbus Eastern Promise can be grown in containers. However, it is important to choose a large container that provides adequate drainage and soil volume for the tree’s roots.

Q: When is the best time to prune Sorbus Eastern Promise?

A: Sorbus Eastern Promise should be pruned in late winter or early spring while the tree is still dormant. Avoid pruning during the growing season as this can damage the tree and reduce its flowering and fruiting potential.

Q: Is Sorbus Eastern Promise deer-resistant?

A: Sorbus Eastern Promise is somewhat deer-resistant, but young trees may be vulnerable to deer browsing. To protect young trees, consider using fencing or repellents.

Q: How can I propagate Sorbus Eastern Promise?

A: Sorbus Eastern Promise can be propagated by seed or by softwood cuttings taken in early summer. However, it is important to note that seed-grown trees may not be true to the parent plant and may exhibit variation in flower color and fruit quality.

Related Plants

– Sorbus aucuparia- Sorbus aria- Sorbus vilmorinii- Sorbus commixta- Sorbus hupehensis

References

– Dirr, M. A. (2009). Manual of woody landscape plants: their identification, ornamental characteristics, culture, propagation, and uses. Stipes Publishing.- Gilman, E. F., & Watson, D. G. (1994). Sorbus Eastern Promise. Fact Sheet ST-645, Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida.- Huxley, A., & Griffiths, M. (1992). The new Royal Horticultural Society dictionary of gardening. Macmillan.