Iris versicolor – Blue Flag Iris

Illuminate damp garden spaces with this striking native jewel. The blue flag iris deploys magnificent, unique bluish-purple blossoms highlighted by yellow and white markings in the heart of summer. Its slender silhouette and graphic allure bring incomparable vertical structure to waterlogged areas and shoreline borders.

Characteristics

• Foliage : Long, sword-shaped leaves of a steady bluish green maintain impeccable form throughout the season. The foliage is deciduous.
• Flowering / Fruiting / Stems : Complex flowers in shades of blue, mauve, and purple bloom proudly atop sturdy stems. The flowering then gives way to green, then brown seed capsules in autumn.
• Light Requirements : Provide a full sun location to obtain a profusion of blooms, although the plant tolerates light shade.
• Habit : Erect, forming dense clumps that expand gracefully over the years without becoming invasive.
• Growth Rate : Moderate to fast, quickly reaching full maturity.
• Soil : Thrives fully in a soil rich in organic matter, heavy, clayey, and constantly moist to wet.
• Hardiness : Offers excellent hardiness (zone 3), perfectly withstanding the harshest winter conditions.
• Resistance : Naturally deters White-tailed deer while tolerating water-saturated soils and temporary flooding.

Use

• Types of Use : Ideal for stabilizing shorelines, planting in rain gardens, bordering ponds, or integrating into a low, damp flowerbed. Also perfectly suited for cultivation in aquatic containers.
• Decorative Advantages : Creates striking vertical accents and adds an irresistible, wild natural touch to the landscape design.

Maintenance

• Watering : Maintain the soil continuously moist or wet. Water generously and regularly if the plant is grown outside of a naturally damp zone or pond.
• Fertilization : Apply a rich compost at planting time or add a balanced organic fertilizer in spring to sustain its vigour.
• Pruning : Cut back the dried foliage completely to a few centimetres above the ground in autumn or very early spring to stimulate fresh new growth.
• Planting : Install rhizomes just beneath the soil surface, respecting the recommended spacing to allow the clump to spread.