Purple Viper's Bugloss Seeds (Echium plantagineum)

Native to Mediterranean hillsides, at home in an English garden. Sown in spring, it flowers within weeks: soft pink buds open to violet-blue bells and deepen in colour as the season goes on. From midsummer into early autumn, it hums with bees, keeping its nectar topped up through the day so they keep coming back.

Sow in dry, free-draining soil. Purple viper's bugloss thrives in the gaps of a gravel garden, a cottage border or a cut flower patch, and brings a long, easy season of colour.

Key features:

• Flowers in its first year, from June to September
• Exceptional for bees, with a steady supply of nectar through the day
• Pink buds opening to violet-blue flowers, on branching, bushy stems
• Drought-tolerant and thrives in poor, sandy or stony soils
  
• Approx. 200 seeds per 1 gram

Purple viper’s bugloss (Echium plantagineum) is a sun-loving annual from the Mediterranean that brings rich colour and a steady hum of bees to the garden. It starts as a low rosette of soft, broad leaves with clear veins, then branches into a bushy mound around 60 cm tall. From June to September it’s covered in large, bell-shaped flowers. Pink buds open to violet-blue and deepen to purple as the season goes on.

Its botanical name comes from those broad leaves, which look a little like plantain (Plantago). “Bugloss” comes from the Greek for “ox’s tongue”, after the rough texture of the plant, and “viper’s” is often linked to its seeds, said to look like a snake’s head. Like its native cousin, it’s best known today as a wildlife magnet. It produces plenty of nectar and refills it through the day, feeding bees, bumblebees, hoverflies and butterflies all summer.

It’s ideal for dry, sunny borders, gravel gardens, banks and poor soils, and asks for very little once it’s in the ground. Sown in spring, it flowers that same summer. Leave a few flowers to set seed and it will return the following year.

Sow Purple Viper's Bugloss seeds directly into prepared ground in autumn or spring. Lightly rake into the soil surface, as seeds need light to germinate. Germination can occur in 2–4 weeks, depending on conditions.

Choose a sunny, open site with well-drained, low-fertility soil. Viper’s Bugloss prefers dry areas and struggles in wet or overly rich soils. Water only during prolonged dry spells during establishment—after that, it is drought-tolerant and requires little intervention.

Flowers appear in the plant’s second year, typically from June through August. To encourage natural reseeding, leave some flower heads to set seed at the end of the season.

For garden applications direct sow at 1g/m2. For overseeding existing meadow planting or for new sowings on larger areas sow at a maximum of 2g/m2.

Perfect for pollinator-friendly borders, gravel gardens, dry banks and cottage garden borders. Purple viper’s bugloss is a magnet for pollinators, with a generous supply of nectar from early summer into September. Sown each spring or left to self-seed, it brings a reliable splash of colour that feeds honeybees, bumblebees, solitary bees and butterflies all season long.

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Q1: When does Purple Viper’s Bugloss flower?
A: It flowers in its first year. Sown in spring, it blooms from June to September. Sow in September and it will flower earlier the following summer.

Q2: Will Purple Viper’s Bugloss grow in clay or rich soil?
A: It prefers poor, free-draining soil and struggles in heavy or waterlogged ground. Rich soil gives soft, floppy growth with fewer flowers, so there’s no need to feed it. It’s ideal for sandy, stony or chalky sites and gravel gardens.

Q3: Is Purple Viper’s Bugloss good for bees?
A: Yes. Like its native cousin, it produces plenty of nectar and refills it through the day, so bees keep coming back. Butterflies and other pollinators visit too.

Q4: Do I need to replant it every year?
A: It’s an annual, so each plant flowers for one season. If you leave some flowers to set seed, it often self-seeds and comes back the following year with little effort. You can also sow fresh seed each spring for a reliable display.

Q5: Is Purple Viper’s Bugloss a native wildflower?
A: No. It comes from the Mediterranean and southern Europe. If you need native species only, for example for a meadow restoration project, our native viper’s bugloss (Echium vulgare) is the one to choose.

Q6: Is it safe around children and animals?
A: It’s harmful if eaten, and the bristly leaves can irritate skin, so wear gloves when handling it. Keep it away from grazing livestock and horses.