Description of Lythrum salicaria 'Robert'

Lythrum salicaria 'Robert' is a purple loosestrife cultivar chosen for its flower colour and garden habit. It gives you tall summer flower spikes and suits wet ground, pond margins, and bog gardens.

Appearance

It grows upright stems with narrow leaves, topped with dense flower spikes in summer. Colour is typically a strong pink-purple tone. Expect around 1 to 1.5m in a wet, fertile spot.

Care Guide

It likes sun and wet soil. If it dries out, the lower leaves yellow and flowering drops.

• Sun: Full sun for best flowering.
• Soil: Wet, fertile soil or aquatic compost.
• Water: Keep consistently damp to wet.
• Deadheading: Snip spent spikes for more flowers and less self-seeding.
• Cut back: Cut down in late autumn or late winter.

Divide in spring if it gets too large. Replant divisions and water them in well.

Suitability for Bog Garden

This suits bog gardens as a tall summer flowerer for the back half of the bed. It also works as a colour block alongside pickerel weed and irises.

Plant it in groups for impact, or repeat it along an edge to create a clear line through the planting.

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