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    • Photo of Allium cyaneum flower by Conifer Kingdom

    Photo by Conifer Kingdom

    Used with permission, all rights reserved

    Show all photos

    Allium cyaneum

    Also Known As

    • Allium cyaneum [blue]
    • Ornamental Onion

    Plant type

    perennial, bulb / corm / tuber

    size

    • H: 4"-8"
    • W: 4"-12"

    planting zones

    • 4a-9b

    More Options

    Allium cyaneum plant details

    Allium cyaneum is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In summer blue flowers emerge. Features grassy texture. Attracts bees and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - dappled shade and regular - low water. Does well in average, gritty, rich and well-drained soil. A good option if you're seeking something humidity tolerant and verticillium wilt resistant.

    CHARACTERISTICS OF Allium cyaneum

    Plant type: perennial bulb / corm / tuber
    Plant family: amaryllidaceae
    Foliage: deciduous green
    Mature size: 4 IN - 12 IN - wide, 4 IN - 8 IN - tall
    Flowers: blue blooms in summer
    Uses: container plant, edging plant, rock garden

    GROWING CONDITIONS for Allium cyaneum

    USDA Zones: 4a - 9b
    Sun exposure: sun - dappled shade
    Watering frequency: regular - low
    Resistant to: deer and rabbit, humidity and verticillium wilt
    Soil needs: average, gritty, rich and well-drained

    Nursery contributed plant descriptions

    Allium cyaneum is a wonderful small species from China. It forms violet blue, open or pendant shaped flowers with long stamens above fine foliage in June and July. Unusual, hardy and easy to grow, it spreads by short rhizomes to form a clump. Few plants can offer the unique flower forms of ornamental onions.

    By: Phoenix Perennials and Specialty Plants Ltd.

    An edible, flowering ornamental onion plant that has dark blue flowers.

    By: Conifer Kingdom

    1/8" cover with grit, place at 68* for 4 weeks, then cool greenhouse 10-30cm

    By: Avant Gardens

    A cute little plant with 6-8 bell-shaped flowers on umbels 1" across. Great for rock gardens, troughs and front of a border. Drought tolerant.

    By: Edelweiss Perennials

    Gardening facts about Allium cyaneum plant

    How to Grow Allium cyaneum

    • Sun Exposure

      • sun - dappled shade

    • Water Needs

      • regular - low

    • Soil Needs

      • average
      • well-drained
      • rich
      • gritty

    • Special Situation

      • humidity tolerant
      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Flower Color

      • blue

    • Wildlife

      • bees
      • butterflies
      • deer resistant
      • rabbit resistant

    • Flower Season

      • summer

    • Foliage Season

      • deciduous

    • Texture

      • grassy

    See other plant types of Allium for your garden

    Allium cernuum

    aka Allium cernum, Lady's Leek, Nodding Onion, Wild Onion

    Plant Type

    Perennial, Bulb / Corm / Tuber

    Zones

    4a-9b

    Size

    Height: 18"-24"

    Width: 12"-18"

    • sun - dappled shade
    • regular - drought tolerant
    • dry when dormant
    • dry in summer
    Photo of Allium cernuum flower by Walter Siegmund
    View Plant

    Allium cristophii

    aka Allium albopilosum, Allium christophii, Star of Persia

    Plant Type

    Perennial, Bulb / Corm / Tuber

    Zones

    4a-9b

    Size

    Height: 12"-18"

    Width: 6"-12"

    • sun - mostly sun
    • occasional - drought tolerant
    • dry when dormant
    • dry in summer
    Photo of Allium cristophii landscape by Panayoti Kelaidis
    View Plant

    Allium 'Millennium'

    aka Allium nutans x 'Millennium', Allium X 'Millenium', Millenium Hybrid Ornamental Onion, Millennium Onion

    Plant Type

    Perennial, Bulb / Corm / Tuber

    Zones

    5a-9b

    Size

    Height: 12"-18"

    Width: 12"-18"

    • sun - mostly sun
    • regular - low
    Photo of Allium 'Millennium' flower by Phoenix Perennials and Specialty Plants Ltd.
    View Plant

    Allium tuolumnense

    aka Allium sanbornii var. tuolumnense, Rawhide Hill Onion

    Plant Type

    Perennial, Bulb / Corm / Tuber

    Zones

    5a-10b

    Size

    Height: 6"-20"

    Width: 2"-12"

    • sun - dappled shade
    • occasional - drought tolerant
    • dry when dormant
    • dry in summer
    Photo of Allium tuolumnense flower by Stan Shebs
    View Plant

    Allium moly 'Jeannine'

    aka Allium luteum, Jeannine Golden Garlic

    Plant Type

    Perennial, Bulb / Corm / Tuber

    Zones

    3a-9b

    Size

    Height: 6"-12"

    Width: 2"-18"

    • sun - dappled shade
    • regular - drought tolerant
    • dry in summer
    Photo of Allium moly 'Jeannine' flower by Karl Gercens III
    View Plant

    More Options

    +122 more Allium
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