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Allium ×proliferum
Also called Beltsville Bunching Onion, Catawissa Onion, Egyptian Onion, Wakegi Onion, Top Onion, Egyptian Walking Onion, Garden Onion
A hardy perennial onion that produces a cluster of bulblets in place of flowers at the top of its stalk. Its bulblets can sprout while still attached and root where they fall, which gives it the name walking onion. Grow it like a bulb onion in a sunny, well-drained spot.
The tree onion (Allium × proliferum) is a perennial plant similar to the common onion (A. cepa), but with a cluster of bulblets where a normal onion would have flowers. Tree onions are also known as spring onions, green onions, topsetting onions, walking onions, or Egyptian onions. Genomic evidence has suggested that they may be a diploid hybrid of the shallot and the Welsh onion (A. fistulosum). Other sources treat the tree onion as A. cepa var. proliferum or A. cepa Proliferum Group.
Tree onion bulblets will sprout and grow while still on the original stalk. The bulblets are usually marble-sized, between 0.5 cm to 3 cm in diameter. They may bend down under the weight of the new growth and take root some distance from the parent plant, giving rise to the name "walking onion".
South Idaho onion · Abrams' allium · Allium aciphyllum · Tapertip onion · Allium aeginiense · Allium aflatunense · Allium agrigentinum · Allium alabasicum · Allium albotunicatum · Allium alibile · Altai Onion · Allium altissimum
Text excerpted from the Wikipedia article Tree onion by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
