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Onions are a cool-weather crop and can be grown in USDA zones 3 to 9. [67] Hot temperatures or other stressful conditions cause them to "bolt", meaning that a flower stem begins to grow. [68] Onions are grown from seeds or from partially grown bulbs called "sets" or starter bulbs. Onion seeds are short-lived and fresh seeds germinate more ...
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 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.
And just like other bulbs (including flowers), onions are essentially the resting stage for a mature onion plant. Sprouting starts when the onion is exposed to the right growing conditions.
There are dozens of cultivars of the onion (Allium cepa), one of the most widely cultivated species of the genus Allium, But there are also other species cultivated as 'onions'. Many are named after the first person to breed them, or the locality they came from.
Ornamental plant pathogens and diseases (5 C, 99 P) P. Plant nurseries (2 C, 33 P) R. Roses (8 C, 126 P) ... List of companion plants; List of culinary herbs and spices;
Allium sphaerocephalon is a plant species in the Amaryllis family known as round-headed leek, round-headed garlic, ball-head onion, and other variations on these names. Drumstick allium is another common name applied to this species. Some publications use the alternate spelling Allium sphaerocephalum. [2] It is a bulbous herbaceous perennial plant.
Onions have powerful antioxidant, anti-inflammatory properties. Learn the health benefits of onions, onion nutrition facts and get healthy onion recipes. ... otherwise known as plant compounds ...