Tree onions, also commonly called top onions or Egyptian onions, are a strong-growing onion with a bunch of bulblets where a normal onion would have flowers. In some varieties these bulblets will sprout and grow while still on the original stalk, which may bend down under the weight of the new growth, giving rise to the name, walking onion. While these onions are often listed as Allium cepa var. prolifera, recent research has shown that the tree onion is a cross between Allium cepa, the cultivated onion, and Allium fistulosum, the welsh onion. This phenomenon of forming bulblets instead of flowers is also seen in garlic and various wild species of Allium. Image File history File links Name Allium fistulosum bulbifera Family Liliaceae Image no. ... Image File history File links Name Allium fistulosum bulbifera Family Liliaceae Image no. ... Binomial name Allium cepa L. Onion in the general sense can be used for any plant in the Genus Allium but used without qualifiers usually means Allium cepa L., also called the garden onion. ... Binomial name Allium fistulosum L. Welsh Onions are Allium fistulosum (Alliaceae). ... Garlic (Allium sativum) is a bulbous perennial food plant of the family Alliaceae. ... Species See List of Allium species Allium is the onion genus with about 1250 species, mostly classified in its own family Alliaceae. ...
It is quite probable that it is the common Onion introduced from France into Canada by the early colonists and changed by the climate.
The TreeOnion is propagated from the little stem bulbs alone, which are set in February, 2, inches deep and 4 inches apart, in rows 8 inches asunder.
It is distinguished from the Ordinary TreeOnion by the great vigour of its growth and the rapidity with which the bulblets commence to grow without being detached from the top of the stem.