Lobelia gerardii (L. speciosa) 'Vedrariensis' – Richly flowering, blue-violet perennial for the border

Lobelia gerardii 'Vedrariensis', also known by the collective name Lobelia speciosa , is an exceptionally graceful, profusely flowering perennial that provides gardens and borders with an abundance of blue-violet flowers throughout the summer. This elegant Lobelia forms sturdy, upright stems crowned with clusters of bell-shaped flowers 2–4 cm across. Its striking color and vigorous habit make 'Vedrariensis' an excellent choice for both classic borders and modern garden designs.

Characteristics of Lobelia gerardii 'Vedrariensis'

• Plant type: perennial

• Height: 80–120 cm

• Flower colour: intense blue-violet

• Flower shape: bell-shaped, 2–4 cm in diameter

• Flowering period: July – September

• Location: sun to partial shade

• Winter hardiness: moderate, requires protection against severe frost

• Suitable for: borders, cottage gardens, moist garden areas, cut flowers

This Lobelia is distinguished by its exuberant flowering and beautiful, deep shades that add a striking color accent to the garden.

Richly flowering summer plant with a powerful appearance

'Vedrariensis' forms strong, upright stems throughout the growing season, adorned with numerous flowers along their entire length. Its blue-violet hue is refined, bright, and contrasting, making it an effortless focal point in mixed borders.

The wealth of flowers also makes this Lobelia attractive to bees, butterflies and bumblebees, which benefits biodiversity in the garden.

Perfect for borders and gardens with damp locations

Lobelia gerardii prefers moist but well-drained soil. This makes it ideal for borders near ponds, along banks, or in damp areas of the garden. Provided it receives sufficient water, it also performs well in regular borders, especially in partial shade or full sun.

Its elegant, upright growth makes it ideal as a vertical accent plant among lower perennials.

Winter protection is necessary

Although Lobelia gerardii 'Vedrariensis' is a perennial, it needs protection during the winter months, especially during severe frost or wet winters. Protect the root zone with:

• a thick layer of mulch

• leaves, straw or pine branches

• or local winter cover

With adequate protection, this Lobelia will regrow without any problems in the spring.

Care and cultivation

• Location: sun / light partial shade

• Soil: nutritious, humus-rich and moisture-retaining

• Water requirements: regular watering, especially during dry periods

• Maintenance: remove faded flower stems for longer flowering

• Winter care: cover in case of frost

With proper care, 'Vedrariensis' becomes a long-lived, vigorous perennial that produces impressive blooms every year.

Application in garden design

The rich flowering and elegant growth make this Lobelia perfect for:

• perennial borders

• cottage and natural gardens

• moist, semi-shaded places

• color contrasts in mixed planting

• backgrounds or structural layers in borders

The deep blue to violet-blue flowers combine beautifully with silver-leaved varieties, ornamental grasses and warm shades such as yellow, orange and red.