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Allium bisceptrum, also known as the twincrest onion or aspen onion, is a high elevation plant native to western United States. It is a perennial that thrives under damp and shady conditions or open meadows in California , Arizona , New Mexico , Nevada , Oregon , Washington , Idaho , and Utah .
Transplanting has a variety of applications, including: Extending the growing season by starting plants indoors, before outdoor conditions are favorable; Protecting young plants from diseases and pests until they are sufficiently established; Avoiding germination problems by setting out seedlings instead of direct seeding.
While the large, mature onion bulb is most often eaten, onions can be eaten at immature stages. Young plants may be harvested before bulbing occurs and used whole as spring onions or scallions. When an onion is harvested after bulbing has begun, but the onion is not yet mature, the plants are sometimes referred to as "summer" onions.
Bolting begins; in 10% of the plants leaves bent over 3. 70% of the expected shaft length and diameter reached 4. 48: 408: Leaves bent over in 50% of plants 3: 49: 409: Leaves dead, bulb top dry; dormancy 3. Growth complete; length and stem diameter typical for variety reached 4. 5: Inflorescence emergence 51: 501: Onion bulb begins to elongate ...
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.
Allium aaseae, the Southern Idaho onion or Aase's onion, is a plant species endemic to southwestern Idaho. It has been reported from 6 counties: Elmore, Ada, Boise, Gem, Payette and Washington. [2] [3] [4] The plant is named for American botanist Hannah Caroline Aase (1883-1980), at one time professor at Washington State University in Pullman. [5]
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In the history of agriculture, farmers observed a traditional distinction between "winter cereals", whose seeds require chilling (to trigger their subsequent emergence and growth), and "spring cereals", whose seeds can be sown in spring, and germinate, and then flower soon thereafter. Scientists in the early 19th century had discussed how some ...