Allium giganteum Regel

Ornamental onion

About plant names...

Giant onions are native to central Asia. They reach 3-5' (91-152 cm) in height, and about 18" (45 cm) in width. It has large bulbs, 2-3" (5-7.6 cm) in diameter. It is popular with gardeners for its stunning spherical purple-pink flowerheads three or four inches in diameter. Each flowerhead is supported by a smooth, cylindrical, unbranched stem.

Identification: The flowerheads are unmistakable, white or pink, made up of hundreds of tiny, six-petaled flowers. If the plant is not in bloom, the leaves form a basal rosette looking a bit like thick blades of grass up to 18" (45 cm) long.

Online References:

Floridata.com

The Missouri Botanical Garden

Plants for a Future, a resource and information centre for edible and otherwise useful plants

Plants.ces.ncsu.edu

Wikimedia Commons

6/17/2012 · Coastal Maine Botanical Gardens, Boothbay, Maine
≈ 14 × 21" (34 × 52 cm)

5/27/2016 · Acton Arboretum, Acton, Mass­a­chu­setts

6/18/2012 · Ogunquit, Maine
≈ 9 × 13" (23 × 32 cm)

Allium giganteum description by Thomas H. Kent, last updated 25 May 2020.

© FloraFinder.org. All rights reserved.

6/29/2008 · MacDonalds, Westford, Mass­a­chu­setts
≈ 11 × 11" (28 × 27 cm)

5/27/2016 · Acton Arboretum, Acton, Mass­a­chu­setts

6/17/2012 · Coastal Maine Botanical Gardens, Boothbay, Maine
≈ 21 × 14" (52 × 34 cm)

5/27/2016 · Acton Arboretum, Acton, Mass­a­chu­setts

6/29/2008 · MacDonalds, Westford, Mass­a­chu­setts
≈ 18 × 12" (46 × 31 cm)

8/3/2007 · Holden, Mass­a­chu­setts · By Philip A. Despo ID is uncertain

Range: Zones 5-8:

About this map...