- Radiant blue flowers in late spring and early summer.
- Frost-resistant and winter-hardy for a permanent place in the garden.
- Low maintenance and long-lasting bloom with little care.
- Suitable for borders and marshy edges thanks to its moisture tolerance.
- Attracts bees and butterflies, good for biodiversity.
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Iris siberica 'Blue King' Siberian Iris is a striking perennial with tall, slender foliage and bold, powder-blue blooms that rise on graceful stems in late spring. The flowers display hints of violet and white, creating a luminous display.
Grown from rhizomes, this variety establishes quickly and thrives in sun to light shade, delivering reliable vigor year after year.
With its strong form and vibrant color, vivid blue blooms and robust roots make it a welcome addition to any planting plan.
Care and Watering
Iris siberica 'Blue King' prefers moist, well-drained soil and full sun to light shade. Water deeply during growth, keep the roots cool, and avoid waterlogged beds. Mulch to retain moisture and prevent weed competition.
Maintenance
Remove spent blooms and trim foliage after flowering. Divide crowded clumps every 3–4 years to maintain vigor and prevent disease.
Location
Plant in a sunny spot with good air circulation. Avoid heavy, waterlogged soils; amend clay with organic matter for drainage and plant depth.
Tips
Feed with a balanced slow-release fertilizer in spring, water at soil level, and mulch annually. Label new divisions and monitor for iris borers or rust.
Iris siberica 'Blue King' is a graceful Siberian iris with slender stems and intense blue flowers that elegantly add color accents to borders and natural borders. This perennial forms fine clumps of narrow leaves and airy blooms.
As a charming spring bloomer and summer bloomer, 'Blue King' draws attention in every garden design and is also excellent as a cut flower for striking arrangements.