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Description
Sorbus Ulleungensis Olympic Flame, also known as Korean Mountain Ash, is a deciduous tree that belongs to the Rosaceae family. It is native to Ulleungdo Island, South Korea, but is now commonly cultivated in gardens and parks worldwide. This tree has an upright, oval shape and reaches a height of 15-20 feet (4.5-6 meters) with a spread of 10-12 feet (3-3.5 meters). It is known for its stunning autumn foliage, which turns from bright green to dark red-orange in the fall.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Sorbus |
Appearance
The Sorbus Ulleungensis Olympic Flame has a smooth, gray bark that is slightly cracked. Its leaves are pinnately compound, with 10-15 leaflets that are finely serrated. The leaflets are dark green in the spring and summer and turn to a dark red-orange in the fall. The tree produces small white flowers in the spring, which are followed by bright red berries in the fall. The berries are not edible, but are a favorite food of birds.
Care Guide
Sorbus Ulleungensis Olympic Flame requires well-drained soil with a pH of 5.5-7.5. It prefers moist soil, but can tolerate drought conditions. Water the tree deeply once a week during the growing season, and reduce watering in the fall. Apply a balanced fertilizer in the spring, and again in mid-summer. This tree prefers full sun, but can tolerate partial shade. It is hardy in USDA zones 4-8.
Common Pests & Diseases
The Sorbus Ulleungensis Olympic Flame is susceptible to fire blight, powdery mildew, and leaf spot. Fire blight is a bacterial disease that causes the leaves and branches to turn black and wilt. Powdery mildew is a fungal disease that causes a white powder to form on the leaves. Leaf spot is a fungal disease that causes black or brown spots to appear on the leaves. The tree may also be attacked by aphids, scale insects, and spider mites.
Habitat
The Sorbus Ulleungensis Olympic Flame is native to Ulleungdo Island, South Korea. It grows in mountainous areas and prefers well-drained soil.
Question and Answer
Q: How tall can the Sorbus Ulleungensis Olympic Flame grow?
A: The Sorbus Ulleungensis Olympic Flame can grow up to 15-20 feet (4.5-6 meters) tall.
Q: What is the pH range for the soil that Sorbus Ulleungensis Olympic Flame prefers?
A: Sorbus Ulleungensis Olympic Flame prefers well-drained soil with a pH of 5.5-7.5.
Q: Does Sorbus Ulleungensis Olympic Flame produce edible berries?
A: No, the berries produced by Sorbus Ulleungensis Olympic Flame are not edible.
Q: What is the hardiness zone for Sorbus Ulleungensis Olympic Flame?
A: Sorbus Ulleungensis Olympic Flame is hardy in USDA zones 4-8.
Related Plants
- Sorbus Aria Lutescens
- Sorbus Cashmiriana
- Sorbus Commixta
- Sorbus Dodong
- Sorbus Joseph Rock
References
- “Sorbus Ulleungensis Olympic Flame.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=j210.
- “Ulleung Island Mountain Ash.” Gardenia.net, www.gardenia.net/plant/ulleung-island-mountain-ash-sorbus-ulleungensis-olympic-flame.
- “Sorbus Ulleungensis Olympic Flame.” Plant Information Online, plantinfo.umn.edu/node/1453823.
