Ash tree, Rhynchophylla

Fraxinus rhynchophylla

Fraxinus rhynchophylla is a tree native to Northeast Asia, including Korea, and possesses various growth characteristics and cultivation methods.

Growth Characteristics
- Height: It typically grows up to 10–20 meters.
- Leaves: They are pinnately compound leaves, with new leaves sprouting in the spring.
- Flowers: Small white flowers bloom in May, and the tree is dioecious (having separate male and female trees).
- Fruit: Elongated dry fruits ripen in September and October.

Propagation Methods
- Seed Propagation: Seeds collected in October are kept dormant at low temperatures during the winter and sown in the spring.
- Cutting Propagation: It can be propagated through greenwood cuttings during the summer.

Cultivation Methods
- Soil: It thrives in fertile, well-drained soil.
- Sunlight: It prefers sunlight but can adapt to partial shade. - Watering: Avoid severe drought and provide water appropriately as needed.
- Pruning: Prune as needed to ensure proper air circulation.

Uses in the Garden
- Landscape Tree: Used as a landscape tree due to its attractive form and color.
- Shade Tree: A popular shade tree in gardens as it provides ample shade.

Important Pests and Control Methods
- Diseases:
- Fungicides: If mold appears on the leaves, control it using an appropriate fungicide.
- Pests:
- Aphids: If their numbers increase, they gnaw on the leaves; therefore, use soapy water or consider chemical control.
- Bacteria: They damage the trunk and branches; if damage occurs, remove them physically or use insecticides immediately.

Rhinoceros rhynchophylla is a relatively easy species to care for, but it requires periodic attention and proper maintenance.

Plant Family	Oleaceae
Height	10~30m
Colors	white
Bloom Period	May
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Iron ash
Fraxinus sieboldiana

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Fraxinus