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Allium giganteum

More About Allium giganteum

  • Huge purple balls of tiny star-shaped florets on thick, green stems
  • This allium is not used for culinary purposes
  • Produces grayish-green, strap-like leaves
  • Attracts bees
  • Bloom Time: Late spring to early summer
  • Flower Size: 15 cm

Zone:

5

Height:

125-150 cm

Spread:

15-30 cm

Colour:

Purple
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Ornamental Onion Growing and Maintenance Tips

Leaves die back as flowers begin; don't cut back foliage as it feeds the bulb for next year's flower. Once the flower is spent, remove the flower stalk and leave the foliage until it completely dies back, it can then be removed by gently pulling on the leaves. Do not over water and let the soil dry out between waterings.


Allium giganteum Characteristics

Full Sun
Full Sun
Partial Sun/Shade
Partial Sun/Shade
Attracts Butterflies
Attracts Butterflies
Fast
Fast
Deer Resistant
Deer Resistant
Drought Tolerant
Drought Tolerant
Heat Tolerant
Heat Tolerant
Cut Flower/Foliage
Cut Flower/Foliage
Edible
Edible
Fragrant
Fragrant
Rock garden
Rock garden

Soil Moisture

Moist to Average
Well-drained
Average to Dry Soils

Growth Rate

Medium

Attributes

Xeriscape

Flowering Time

Spring
Lt. Spr-Sum

Habit

Upright

Foliage Color

Gray
Green

Landscape uses

Rooftop (extensive)
Border/edging

 Suitable Substitutions for Allium giganteum