Hazelnut tree

Corylus sieboldiana var. mandshurica

Corylus sieboldiana var. mandshurica is a plant native to Korea, China, Russia, and other regions, characterized by the following features and cultivation methods:
 - Growth Characteristics:
- It is a deciduous shrub that grows primarily in mountainous areas or at the edges of forests.
- It reaches a height of approximately 2 to 5 meters and forms a rounded shape due to its extensive branching.
- The leaves are egg-shaped with serrated edges.
- In spring, male and female flowers bloom in separate inflorescences, and nut-shaped fruits develop in autumn.
 - Propagation Methods:
- Seed propagation: Prepare seeds by collecting mature nuts in autumn. Natural germination is promoted after passing through a cold winter.
- Cuttings and layering can also be utilized. It can be propagated by cutting branches in early spring or late autumn. 3. Cultivation Methods:
- Water hazel prefers sunny locations but can grow in partial shade.
- It thrives in well-drained, nutrient-rich soil.
- Regular watering is required during the first year after planting, while mature trees can tolerate relatively dry conditions.
 - Garden Uses:
- It is used for hedges or landscape decoration when a natural landscape is desired.
- The nuts are also a useful food source for wildlife.
 - Major Pests and Control Methods:
- Major diseases include fungal diseases affecting the leaves; growing the tree in a well-ventilated environment helps prevent them.
- Pests may include aphids and mushroom aphids. If detected early, physical removal or natural insecticides can be used.
- Regular observation and management, such as pruning weak branches, are necessary to prevent pests.

Planting water hazel in the garden contributes not only to ecological value but also to landscape aesthetics.

Plant Family	Betula family
Height	2~5m
Colors	yellow, red
Bloom Period	April~May
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

rare
Corylopsis pauciflora

Korean hazelnut tree
Corylus sieboldiana