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Iris

Image of Iris

Gerald L. Klingaman

Family

Iridaceae

Botanical Name

Iris

Plant Common Name

Iris

General Description

One of the most beloved of genera for the garden, Iris comprises several hundred species and literally thousands of cultivars. These vary widely in shape, size, color and habitat and are naturally distributed across much of the Northern Hemisphere and Africa.

Iris species are all perennial and may be evergreen or seasonal ephemerals and are either born from bulbs or slow-spreading bulbous rhizomes. Foliage varies but is always upright and may be grassy, strap-like or sword-shaped. Plants are most distinguished by their large, distinct flowers which come in several different forms. Overall, they fan out and are comprised of six distinct petals. Often three of these petals curve upwards, and are called standards, while the other three curve downwards, and are called falls. In addition, some species have may have fuzzy pads at the base of the falls, called beards, or crested protrusions, called crests. Those that lack beards or crests are referred to as “beardless.”

Iris flowers are large, fragrant, highly attractive to bees and may be purple, blue, yellow, orange, orange-red, pink, white, maroon, or even brown. Bicolored blooms are also very common.

Hardiness and culture are species dependent, but most Iris are temperate, prefer full to part sun and rich soil with average drainage. Iris are outstanding garden plants, whether they be species fit for rock gardens, like Iris reticulata, woodlands, like Iris cristata or water gardens, like Iris pseudacorus. Then of course there is the classic tall bearded iris, which will make any early season garden shine!

There are sixteen classifications for cultivated Iris. These are: 1. Aril Iris

Bearded Iris Classifications:

2. Miniature Dwarf Bearded 3. Standard Dwarf Bearded 4. Intermediate Bearded 5. Border Bearded 6. Miniature Tall Bearded 7. Tall Bearded

Beardless Iris Classifications:

8. Spuria Iris 9. Siberian Iris 10. Japanese Iris 11. Louisianas Iris 12. Pacific Coast Natives 13. Species

Characteristics

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Native To

    World/Pandemic, North America, Europe, Africa, Asia

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Yellow, Blue, Purple, Orange, Pink, Rose, Coral, Peach, Burgundy, Lavender, Plum, Orange Red, Dark Salmon, Bronze, Chocolate, Black

  • Flower Color Modifier

    Bicolor

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Cutflower, Mixed Border, Rock Garden / Wall

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No