Facts about Irises

1. 11

   France adopted the iris as a royal emblem in the 12th century, and the stylized fleur-de-lis design derived from the flower remains central to French heraldic tradition today.

   IrisesJun 8sharehistorysymbolismheraldry
2. 10

   Dwarf beardless irises reach only 4 to 10 inches tall and bloom 2 to 3 weeks earlier than standard tall bearded varieties, making them valuable for creating tiered garden displays and extending the iris flowering season.

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3. 09

   Cultivators of Japanese irises selectively bred plants for over 400 years starting in the Edo period to achieve flowers with up to 12 petals instead of the standard 6, creating ornamental varieties called higo irises.

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4. 08

   Iris flowers bloom in a two-day cycle where the outer sepals unfold on day one and the inner petals expand on day two, requiring precise timing for successful pollination by visiting bees.

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5. 07

   Van Gogh's 1890 painting Irises sold for $53.9 million in 1987, making it one of the most expensive paintings by a single artist at that time.

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6. 06

   Iris flowers rely on ultraviolet light patterns invisible to humans but visible to their pollinating insects, guiding bees to nectar sources through distinctive landing strips on the petals.

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7. 05

   In medieval Europe, iris flowers were cultivated specifically for their rhizomes, which produced orrisroot used in perfumery and medicine for over 1,000 years before synthetic alternatives became available in the 20th century.

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8. 04

   Ancient Egyptians associated irises with the goddess Iris and used the flower as a symbol of valor, planting them around tombs approximately 3,500 years ago.

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9. 03

   Bearded irises produce rhizomes that can be divided every three to four years, allowing a single plant to multiply into dozens of genetically identical copies within a decade.

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10. 02

    Over 300 species of irises grow worldwide, with the largest concentration of 150 species native to Asia, particularly in China and Japan.

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11. 01

    The human eye's iris contains 256 unique characteristics, making iris recognition technology more distinctive than fingerprints for biometric identification.

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