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Allium fistulosum, the Welsh onion, also commonly called bunching onion, long green onion, Japanese bunching onion, and spring onion, is a species of perennial plant, often considered to be a kind of scallion. The species is very similar in taste and odor to the related common onion, Allium cepa, and hybrids between the two (tree onions) exist.
Here's how to grow onions in your own garden, including growing onions from seed and growing from food scraps, and when to pick them in the spring.
4: Development of harvestable vegetative plant parts 41: 401: Leaf bases begin to thicken or extend 43: 403: 30% of the expected bulb or shaft diameter reached 45: 405: 50% of the expected bulb or shaft diameter reached 47: 407: Bolting begins; in 10% of the plants leaves bent over 3. 70% of the expected shaft length and diameter reached 4. 48: 408
An onion (Allium cepa L., from Latin cepa meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium. The shallot is a botanical variety of the onion which was classified as a separate species until 2011.
Scallions (also known as green onions and spring onions) are edible vegetables of various species in the genus Allium. Scallions generally have a milder taste than most onions . Their close relatives include garlic , shallots , leeks , chives , [ 1 ] and Chinese onions . [ 2 ]
Allium cernuum is a herbaceous perennial growing from an unsheathed elongated conical bulb which gradually tapers directly into several keeled (thin and flat) grass-like leaves, 2–4 millimetres (3 ⁄ 32 – 5 ⁄ 32 inch) in width.
Allium flavum (yellow) and Allium carinatum (purple). Allium is a large genus of monocotyledonous flowering plants with around 1000 accepted species, [4] [5] making Allium the largest genus in the family Amaryllidaceae and amongst the largest plant genera in the world. [6]
Allium vineale (wild garlic, onion grass, crow garlic or stag's garlic) is a perennial, bulb-forming species of wild onion, native to Europe, northwestern Africa and the Middle East. [2] The species was introduced in Australia and North America , where it has become an Invasive species .