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Allium giganteum
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Allium giganteum
Garden Diary


Date purchased or acquired:




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Location in the garden:




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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
Soil Type
Soil pH
Soil Moisture
Care Level 		Flower Colour
Blooming Time
Foliage Color
Plant Uses & Characteristics
Height
   90-120 cm
   35-47 inches
Spread
   25-30 cm
   10-12 inches
Foot Traffic
  
Growth Rate
  
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.