Photo of Allium thunbergii 'Ozawa' flower by Far Reaches Farm

Photo by Far Reaches Farm

Used with permission, all rights reserved

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Allium thunbergii 'Ozawa'

Also Known As

  • Autumn Onion
  • Ornamental Onion

Plant type

perennial, bulb / corm / tuber

size

  • H: 6"-10"
  • W: 4"-12"

planting zones

  • 7a-10a

More Options

Allium thunbergii 'Ozawa' plant details

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

CHARACTERISTICS OF Allium thunbergii 'Ozawa'

Plant type: perennial bulb / corm / tuber
Plant family: amaryllidaceae
Foliage: deciduous green
Mature size: 4 IN - 12 IN - wide, 6 IN - 10 IN - tall
Flowers: purple blooms in fall and summer
Uses: border plant, container plant, cottage garden, long-blooming, ornamental, rock garden

GROWING CONDITIONS for Allium thunbergii 'Ozawa'

USDA Zones: 7a - 10a
Sun exposure: sun
Watering frequency: regular
Resistant to: deer and rabbit, verticillium wilt
Soil needs: average, rich and well-drained

Nursery contributed plant descriptions

The last to bloom, ours are still in flower (its December) showy pink heads on 6" stems atop grassy tufts of delicate foliage, an outstanding plant.
Here is a little Japanese bulbous plant that will add some late summer glitz to the rock garden or special foreground planting niche. Not shy about blooming, this will strut its stuff with round purplish flowerheads on 10" stems which sends our friends the Butterflies and Bees into quiet delirium.

Gardening facts about Allium thunbergii 'Ozawa' plant

How to Grow Allium thunbergii 'Ozawa'

  • Sun Exposure

    • sun
  • Water Needs

    • regular
  • Soil Needs

    • average
    • well-drained
    • rich
  • Special Situation

    • verticillium wilt resistant

Features

  • Foliage Color

    • green
  • Flower Color

    • purple
  • Wildlife

    • bees
    • butterflies
    • hummingbirds
    • deer resistant
    • rabbit resistant
  • Flower Season

    • summer
    • fall
  • Foliage Season

    • deciduous
  • Texture

    • grassy

See other plant types of Allium for your garden

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
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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
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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

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

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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