Cleome Seeds – Cleome hassleriana Flower Plant

Cleome is a warm-season flowering annual known for its tall growth habit and distinctive flower clusters. Plants produce upright stems topped with airy blooms featuring long, prominent stamens that create a spider-like appearance. It is well suited for borders, cottage gardens, pollinator gardens, and mixed ornamental plantings. Cleome adapts to a range of soil types and performs best in sunny locations with good air circulation. Its extended flowering period provides seasonal color and vertical interest in landscape settings.

Features

• Tall, upright flowering annual
• Produces distinctive spider-like flower clusters
• Suitable for borders and cottage gardens
• Adapted to warm growing conditions
• Attracts pollinators to garden spaces
• Performs well in a range of well-drained soils
• Provides height and seasonal color in ornamental plantings

Specifications

• Scientific Name: Cleome hassleriana
• Common Name (US): Spider Flower
• Seed Type / Variety: Cleome hassleriana
• Growth Habit: Upright annual flowering plant
• USDA Zones: 2-11 (commonly grown as an annual)
• Planting Season: Spring
• Growing Season: Summer through Fall
• Sowing Season: March-May
• Germination Time and Conditions: 10-21 days at 70-75°F (21-24°C)
• Sunlight Requirements: Full sun
• Soil Requirements: Well-drained soil; adaptable to average garden soils
• Watering Needs: Moderate watering; allow soil surface to dry slightly between waterings
• Mature Plant Size: 36-60 inches tall, 18-24 inches spread
• Plant Spacing: 12-18 inches apart