Cape Cod Boys Siberian Iris

Cape Cod Boys Siberian Iris (Iris sibirica 'Cape Cod Boys')

Cape Cod Boys Siberian Iris forms graceful clumps of upright, blue green blades and bears periwinkle blue flowers with darker blue veining and clear lemon yellow signals in late spring to early summer. Long flowering and clean foliage add refined texture to borders and water edges.

Distinctive Features

Wide, blue green leaves provide season long structure, while the blooms show crisp veining that intensifies at the petal tips for a refined bicolor effect. Sturdy, weather resistant stems hold flowers above foliage for extended display.

Growing Conditions

• Sun Exposure: Full sun to partial shade; provide afternoon shade in hot climates.
• Soil: Moist, well drained, fertile soil; tolerates heavier clay with added organic matter.
• Water: Keep evenly moist, especially in spring and early summer; do not allow prolonged dryness.
• USDA Hardiness Zones: 3 to 9.
• Mature Size: About 2 to 3 ft tall and 1.5 to 2 ft wide.

Ideal Uses

• Focal Point: Veined periwinkle blooms with bright yellow signals create a striking late spring accent.
• Pond Edges: Thrives at well drained margins with steady moisture.
• Rain Gardens: Suits moist, amended sites with periodic wetting.
• Mixed Borders: Vertical foliage pairs with peonies, salvias, and ornamental grasses.
• Cut Flowers: Long, sturdy stems and elegant blooms suit arrangements.

Low Maintenance Care

• Watering: Maintain consistent moisture through bloom, then water during extended dry spells.
• Pruning: Remove spent flower stalks after bloom; cut foliage in late fall or early spring to refresh clumps.
• Fertilizing: Top dress with compost in spring or use a balanced, slow release fertilizer.
• Mulching: Apply a 2 inch mulch to conserve moisture and cool roots, keeping mulch off crowns.
• Notes: Divide every 3 to 4 years after flowering to maintain vigor and flowering performance.

Why Choose Cape Cod Boys Siberian Iris?

• Refined Color: Periwinkle petals with defined blue veining and lemon yellow signals read clearly from a distance.
• Extended Display: Long blooming window with tidy, upright foliage afterward.
• Site Versatility: Performs in borders, rain gardens, and pond margins.
• Weather Tough: Flowers and stems stand up to rain and wind.
• Low Upkeep: Simple division and routine moisture keep clumps thriving.

Plant in sun to part shade with rich, moist, well drained soil and steady spring moisture to maximize bloom quality, stem strength, and foliage presence.