Common Viper's Bugloss Plant Care

Common Viper's Bugloss (Echium vulgare) belongs to the Boraginaceae family within the Echium genus. Common Viper's Bugloss is native to most of Europe and western and central Asia and it occurs as an introduced species in north-eastern North America, south-western South America and the South and North Island of New Zealand. Common Viper's Bugloss is also known as Blue Weed, Adder's Tongue, Viper's Bugloss.

Common Viper's Bugloss displays a tall, spiky perennial growth habit, reaching up to 4 ft tall with a spread of approximately 2 ft. Common Viper's Bugloss produces tall spikes of small blue, pink, or purple flowers.

Leaf size: approximately 4 inches.

Echium vulgare requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Common Viper's Bugloss thrives in full sun.

Echium vulgare grows best at temperatures of 50–80°F. Common Viper's Bugloss prefers humidity levels of 40–60%.

Well-draining sandy soil with added organic matter for moisture retention. Good drainage is essential for Common Viper's Bugloss to prevent waterlogging, which leads to root rot and fungal issues.

Feed Common Viper's Bugloss every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Common Viper's Bugloss can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to boissier's viper's-bugloss plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Common Viper's Bugloss is susceptible to aphids, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Common Viper's Bugloss grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Common Viper's Bugloss is native to most of Europe and western and central Asia and it occurs as an introduced species in north-eastern North America, south-western South America and the South and North Island of New Zealand. In cooler regions, grow Common Viper's Bugloss as a houseplant or bring it indoors before the first frost.