Description of Iris laevigata - Blue

Iris laevigata (blue form) is a Japanese water iris that thrives in saturated soil and shallow margins. It’s a reliable iris for wetter spots where other types struggle.

Appearance

It forms fans of upright leaves and produces large flat blue flowers in early summer. Height is usually 60 to 90cm, with flowers held above the foliage.

Care Guide

It prefers wet roots and is happy with shallow water over the pot.

• Sun: Full sun to light shade.
• Soil: Heavy wet soil or aquatic compost.
• Water: Saturated soil to shallow margins.
• Tidy: Remove old stems after flowering.
• Division: Divide in spring if clumps crowd.

In baskets, top with grit to keep compost stable.

Suitability for Bog Garden

This suits bog gardens and pond edges in the wetter zone. It adds early-summer colour and keeps a tidy leaf shape afterwards.

Plant in small groups for impact.

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