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PlantSnap
Plant Care
Viper's bugloss
(Echium vulgare)
Also Known As
Viper's bugloss, Blueweed, Dropwort, Spiked speedwell
About This Plant
Echium vulgare, commonly known as viper's bugloss, is a biennial or short-lived perennial plant that is native to Europe and western Asia. It has a hairy stem and leaves, and produces tall spikes of blue, pink or purple flowers that attract bees and butterflies.
Plant Care Instructions
Outdoor Size Range
24-48 inches (60-120 cm) tall and 12-24 inches (30-60 cm) wide
Light Requirements
Full sun to partial shade. Requires at least 6 hours of direct sunlight.
Humidity Needs
Prefers low humidity but can tolerate average humidity levels.
Fertilizing Schedule
Does not require fertilizer but can benefit from a balanced fertilizer once a month during the growing season.
Pruning Guidelines
Deadhead spent flowers to encourage more blooms. Cut back the entire plant after flowering to maintain its shape.
Common Pests and Diseases
Viper's bugloss is relatively pest-free but can occasionally be affected by spider mites or aphids.
Indoor Size Range
Not suitable for indoor cultivation.
Watering Schedule
Moderate watering. Allow the soil to dry out slightly between watering.
Temperature Range
Hardy in USDA zones 3-8. Can tolerate temperatures as low as -40°F (-40°C) and as high as 100°F (38°C).
Growing Season
Summer
Growing Difficulty Level
Easy to grow. Can self-seed and naturalize in the garden.
USDA Hardiness Zones
3-8
Did You Know?
Echium vulgare is also known as 'blueweed' and was introduced to North America as a contaminant in crop seed. It is now considered an invasive species in some areas.
