Photo of Allium cyaneum 'Sky Blue' by Edelweiss Perennials

Photo by Edelweiss Perennials

Used with permission, all rights reserved

Show all photos

Allium cyaneum 'Sky Blue'

Also Known As

  • Blue Ornamental Onion

Plant type

perennial, bulb / corm / tuber

size

  • H: 6"-10"
  • W: 4"-12"

planting zones

  • 4a-9b

More Options

Allium cyaneum 'Sky Blue' plant details

Allium cyaneum 'Sky Blue' is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In summer blue flowers emerge. Features grassy texture. 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 'Sky Blue'

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: blue blooms in summer
Uses: edging plant, rock garden

GROWING CONDITIONS for Allium cyaneum 'Sky Blue'

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

Differs from the species in being more vigorous, larger and the flowers are brighter blue. Drought tolerant.

Gardening facts about Allium cyaneum 'Sky Blue' plant

How to Grow Allium cyaneum 'Sky Blue'

  • 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

    • deer resistant
    • rabbit resistant
  • Flower Season

    • summer
  • 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
View Plant

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

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
Mailing List
Sign Up for updates on new plant arrivals and deals

© 2010—2026 Plant Lust, LLC All Rights Reserved