Product Description 

Lobelia × speciosa ‘Vedrariensis’, commonly known as Purple Lobelia, is a striking upright perennial valued for its deep violet‑purple tubular flowers carried on tall, elegant spikes. Flowering from mid‑summer into early autumn, it provides bold vertical colour when many other plants are fading.

This hardy perennial forms narrow, red‑tinged green foliage and thrives in moist to wet soil, making it ideal for pond margins, bog gardens, and damp borders. It can also be grown in shallow water on the marginal shelf. Reaching 90–120 cm at maturity, it creates a dramatic architectural presence in naturalistic or contemporary planting schemes.

A reliable performer, ‘Vedrariensis’ is pollinator‑friendly, easy to maintain, and fully hardy in UK conditions.

Key Features

• Tall violet‑purple flower spikes from July–September
• Height: 90–120 cm; Spread: 30–45 cm
• Moisture‑loving, suitable for pond edges or shallow water
• Upright, architectural habit with red‑tinged foliage
• Hardy perennial for UK gardens
• Attractive to bees, butterflies, and other pollinators
• Excellent for late‑season colour

Care & Planting Instructions

• Plant in moist to wet soil, or in shallow water up to 5 cm deep.
• Position in full sun to partial shade.
• Keep soil consistently moist; do not allow to dry out.
• Cut back spent flower spikes in autumn.
• Divide congested clumps in early spring every few years.
• Harmful if eaten; skin irritant — wear gloves when handling.

Measurements

• Height: 90–120 cm
• Spread: 30–45 cm
• Flowering: July–September
• Growth Rate: Moderate
• Position: Sun–part shade
• Soil: Moist–wet, fertile

🌱 Companion Plant Suggestions 

Marginals & Bog Plants

• Eupatorium cannabinum – tall, soft pink plumes for late‑season height
• Osmunda regalis (Royal Fern) – bold foliage contrast
• Iris pseudacorus ‘Variegata’ – variegated leaves + yellow flowers
• Astilbe chinensis ‘Purpurkerze’ – purple plumes echoing the flower colour

Oxygenators

• Callitriche stagnalis (Starwort)
• Lagarosiphon major

Floating Plants

• Pistia stratiotes (Water Lettuce)
• Phyllanthus fluitans (Red Root Floater)