Russian Giant Sunflower Seeds - Flower Plant

Russian Giant sunflower is a warm-season annual plant grown for its exceptionally tall growth and large flowering heads. The plant develops a strong, upright stem with broad leaves and produces a single prominent bloom during the growing season. It performs well in warm climates with full sunlight and is suitable for garden beds, borders, and open field planting. This variety establishes quickly and reaches impressive height under suitable conditions.

Features

• Tall, upright growth with a strong central stem
• Adapted to warm-season cultivation
• Produces very large flowering heads
• Suitable for garden beds, borders, and field planting
• Requires full sunlight and open growing space

Specifications

• Scientific Name: Helianthus annuus
• Common Name (US): Sunflower
• Seed Type / Variety: Giant sunflower variety
• Growth Habit: Upright annual
• USDA Zones: 2–11
• Planting Season: Spring to early summer
• Growing Season: Summer
• Sowing Season: March–June
• Germination Time and Conditions: 7–14 days in warm soil (18–25°C)
• Sunlight Requirements: Full sun
• Soil Requirements: Well-drained, moderately fertile soil
• Watering Needs: Moderate; drought-tolerant once established
• Mature Plant Size: 250–400 cm height, 45–75 cm spread
• Plant Spacing: 45–75 cm