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    • Photo of Allium unifolium flower by Michal Maňas

    Photo by Michal Maňas

    This file is licensed under the Creative Commons Attribution 2.5 Generic license.

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    Allium unifolium

    Also Known As

    • One-Leaf Onion
    • Ornamental Onion

    Plant type

    perennial, bulb / corm / tuber

    size

    • H: 18"-30"
    • W: 2"-24"

    planting zones

    • 4a-11

    More Options

    Allium unifolium plant details

    Allium unifolium is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In spring and summer lavender, pink and white flowers emerge. Features grassy texture. Attracts bees, beneficial insects and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and regular - low water. Drought tolerant once established. Prefers to be dry in summer, dry when dormant. Adapts to various soil conditions. Does well in acidic, alkaline, average, clay, gritty, lean, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

    CHARACTERISTICS OF Allium unifolium

    Plant type: perennial bulb / corm / tuber
    Plant family: amaryllidaceae
    Foliage: deciduous green
    Mature size: 2 IN - 24 IN - wide, 18 IN - 30 IN - tall
    Flowers: lavender, pink and white blooms in spring and summer
    Uses: border plant, cutting garden, dried-arrangements, rock garden

    GROWING CONDITIONS for Allium unifolium

    USDA Zones: 4a - 11
    Sun exposure: sun - mostly sun
    Watering frequency: regular - low
    Resistant to: deer and rabbit, verticillium wilt
    Soil needs: acidic, alkaline, average, clay, gritty, lean, rich and well-drained

    Nursery contributed plant descriptions

    Lavender-purple stars cluster on somewhat short stems.

    By: Dancing Oaks Nursery

    Blooms May-July with white to pink flowers. Clumps of grass-like leaves through the winter and spring.

    By: Cactus Jungle

    The name Unifolium refers to the single leaf of this Native Californian Species. Lovely lavender pink flowers! These golden yellow star shaped flowers are excellent for rock gardens. Once established, they spread rapidly. Alliums offer a wide diversity of color, height, and blooming times. They will tolerate a poor garden soil; once established will naturalize easily. Alliums are resistant to deer. They make excellent cut flowers. Plant them around rose bushes to repel spring aphids. The uses are endless, and at this price, you can afford to experiment! Zones 4-9. 5+ cm round bulbs---huge, many ready to split!

    By: Edens Blooms

    Gardening facts about Allium unifolium plant

    How to Grow Allium unifolium

    • Sun Exposure

      • sun - mostly sun

    • Water Needs

      • regular - drought tolerant

    • Water Needs

      • dry when dormant

    • Water Needs

      • dry in summer

    • Soil Needs

      • clay
      • acidic
      • alkaline
      • adaptable
      • average
      • lean
      • well-drained
      • rich
      • gritty

    • Special Situation

      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Flower Color

      • white
      • pink
      • lavender

    • Wildlife

      • beneficial insects
      • bees
      • butterflies
      • deer resistant
      • rabbit resistant

    • Flower Season

      • summer
      • spring

    • Foliage Season

      • deciduous

    • Texture

      • grassy

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