Blueberry 'Duke'

Vaccinium corymbosu 'Duke'

The 'Duke' blueberry (Vaccinium corymbosum 'Duke') is a Northern Highbush blueberry variety characterized by its cold tolerance and ability to be harvested early. This variety generally produces medium-sized fruit with a strong sweet taste and relatively low acidity. Fruit production can be maximized through pollination, and crossbreeding with other blueberry varieties is also recommended.

Growth Characteristics
- Growth Form: Relatively upright and grows to a consistent size.
- Leaves: Has oval green leaves that turn red in the autumn.
- Flowers: White or light pink flowers bloom primarily in May.
- Fruit: Can be harvested from approximately late June to early July.

Propagation Methods
- Seed Propagation: Generally not used. It has low reproductive capacity.
- Cuttings: Propagated by selecting superior branches during the summer. Cuttings collected between September and October are also sometimes used.
- Division: A method of propagating by dividing a mature plant. Select a plant with well-developed roots.

Cultivation Method
- Soil: Acidic soil (pH 4.5-5.5) is suitable, and well-drained soil is ideal.
- Sunlight: It thrives in locations with plenty of sunlight.
- Water Management: Consistent water supply is important; care must be taken to avoid water stress, especially during the fruit ripening period.
- Fertilizer: Use fertilizers specifically designed for blueberries, applying them primarily in spring and autumn.

Uses in the GardenThe 'Duke' blueberry is also valuable as an ornamental plant. It is suitable for planting along garden borders or fences, and the changing leaf colors, particularly in autumn, add to its beauty.

Important Pests and Diseases & Control Methods
- Diseases: Root rot and leaf mold may occur. Ensure thorough ventilation and drainage, and use fungicides if necessary.
- Pests: Aphids, strawberry aphids, and flies are the main culprits. Control them using appropriate organic or chemical pesticides. - Management Method: Minimize damage by removing or controlling pests upon early detection, and maintain a healthy growing environment through periodic observation.

By following these management methods, you can grow the 'Duke' blueberry healthily and utilize it in various ways in your garden.

Plant Type
Plant Family	Rhododendron family
Height	150~210cm
Spread	150~210cm
Colors	white
Bloom Period	May~June
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Blueberry 'Northland'
Vaccinium corymbosum 'Northland'

Blueberry 'Chandler'
Vaccinium corymbosum 'Chandler'