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Dutch iris

Family: Iridaceae

Flowering color: deep and light blue, purple, yellow and white

Flowering period: June - July

Average plant height: 24 inches

Planting depth to base of bulb: 6 inches

Spacing between bulbs: 10

Type of bulb: true bulb

Light requirement: full sun

Landscape uses: beds, borders and as cut flowers

These irises never grew wild in the Netherlands. Instead, they are the products of hybridization carried out by a Dutch plant breeding firm by the name of Tubergen. Two species playing an important role in the development of these hybrids were I. xiphium and I. lusitanica. For growing them, a rich, well-drained soil is important for success. The bulbs can be left in the ground if desired, but there is a risk of disease. The flowers are 4 inches in diameter, and the flower stalks are very sturdy - a quality which makes them quite suitable for use as cut flowers. The color assortment is very wide and includes bicolored varieties.

Most commonly available cultivars

  • ‘Apollo’: yellow and white
  • ‘Blue Diamond’: blue
  • ‘Blue Magic’: deep purple-blue
  • ‘Blue Ribbon’: (‘Professor Blaauw’): deep blue
  • ‘Casablanca’: white
  • ‘Hildegarde’: light blue
  • ‘Ideal’: sky blue
  • ‘Imperator’: blue and orange
  • ‘Madonna’: white
  • ‘Purple Sensation’: deep purple
  • ‘Royal Yellow’: yellow
  • ‘Saturnus’: white and pale yellow
  • ‘Symphony’: yellow and white
  • ‘Telstar’: deep blue
  • ‘White Bridge’: pure white
  • ‘White van Vliet’: pure white
  • ‘White Wedgwood’: pure white

 These bulbs are sometimes sold as mixed colors.

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