Sunflower 'Russian Mammoth'

Helianthus annuus 'Russian Mammoth'

The sunflower 'Russian Mammoth' (Helianthus annuus 'Russian Mammoth') is a variety boasting large, striking flowers and is widely used for ornamental purposes in gardens. The following is a description of this variety's key characteristics and cultivation methods.

Growth Characteristics
- Size: 'Russian Mammoth' typically grows to 2 to 3 meters in height, and in large cases, can reach 4 meters.
- Flower Size: The flower diameter reaches approximately 30 cm, making it very large.
- Growth Rate: It grows rapidly, and flowers bloom about 75 to 90 days after planting the seeds.
- Sunlight and Soil: It prefers full sun and well-drained soil.

Propagation Methods
- Seeds: It is primarily propagated by seeds. They can be planted directly outdoors in late spring or germinated indoors in early spring.
- Planting Method: Seeds should be planted about 2.5 cm deep, spaced 45 to 60 cm apart. Cultivation Method
- Watering: Water when the soil is dry, but avoid excessive moisture.
- Fertilizer: It is recommended to apply nitrogen-rich fertilizer periodically to promote healthy growth.
- Support: Since its large size can cause it to fall over in the wind, installing supports is helpful.

Uses in the Garden
- Landscaping: Its tall stature and large flowers serve as a focal point in the garden.
- Nature Observation: As a plant favored by bees and birds, it is useful for observing the ecosystem.

Important Pests and Diseases & Control Methods
- Diseases: Rust and powdery mildew may occur. To prevent this, ensure good ventilation and use organic fungicides.
- Pests: Pests include aphids and moths. Upon early detection, remove them by hand or control them using organic insecticides.
- Early Prevention: Pests can be prevented through periodic observation and proper environmental management.

As such, the 'Russian Mammoth' sunflower is a plant that allows you to enjoy its beautiful appearance in the garden for a long time with proper care and attention.

Plant Family	Asteraceae
Height	2.7~3.6m
Spread	60~120cm
Colors	yellow
Bloom Period	July~August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-10°C

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