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Allium giganteum
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Allium giganteum
Garden Diary


Date purchased or acquired:




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The next time you are buying perennials please look for our helpful labels and blue pots, and remember "The best perennials come out of the blue"!


Allium giganteum


Giant Flowering Onion

 USDA Zone: 4-9

Plant number: 1.032.090


A truly impressive Ornamental Onion, featuring big round heads of mauve-purple flowers in late spring. The tall stems are excellent for cutting or drying. Flowers are attractive to butterflies. This looks best when combined with a bushy, low-growing perennial to hide the withering onion leaves at blooming time; hardy Cranesbill Geraniums are an excellent companion. Plants go completely dormant during the summer. The fleshy bulbs may be lifted and divided after several years, best done in mid summer after the leaves wither or in early autumn.

Further details for
Allium giganteum


Optimal Growing
Conditions		 Appearance and
Characteristics
Sun Exposure
  Full Sun
Soil Type
  Normal or
  Sandy
Soil pH
  Neutral or
  Alkaline or
  Acid
Soil Moisture
  Dry
Care Level
  Easy 		Flower Colour
  Mauve/Lilac
Blooming Time
  Early Summer
  Late Spring
Foliage Color
  Grey Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Attracts Butterflies
  Border
  Containers
  Cut Flower
  Deer Resistant
  Dried Flower
  Drought Tolerant
  Massed
Height
   90-120 cm
   35-47 inches
Spread
   25-30 cm
   10-12 inches
Foot Traffic
   None
Growth Rate
   Medium
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.