Iris laevigata, commonly known as Japanese water iris, is a graceful, moisture-loving perennial valued for its elegant blooms and slender, sword-like green foliage. This species thrives in wet soils and is ideal for planting at the edge of ponds, streams, or in bog gardens. Its striking flowers—typically in shades of blue to violet—appear in early summer and add a refined, ornamental presence to water-themed or naturalistic garden settings. Unlike some irises, Iris laevigata will grow directly in shallow water, making it a standout in aquatic designs.

Why We Like It

• Elegant blooms perfect for pond and water garden edges

• Tolerates consistently wet or boggy soils

• Adds architectural foliage and colour to aquatic settings

What to Know

• Requires full sun to partial shade

• Prefers consistently moist to wet soil or shallow water

• Remove spent flower stems to tidy plant after blooming

• Divide clumps every few years to maintain vigour

• Mulch in early spring to retain moisture and support new growth

Flower Colour
Typically blue to violet

Flowering Months
June, July

Height and Spread
Height: 60–90 cm
Spread: 45–60 cm