Allium cepa (Cepa Group) 'Senshyu Yellow'
Onion 'Senshyu Yellow'
Onions can be grown from seed or sets, (sets are immature onions, the size of marbles, grown the previous year, and they are less prone to mildew and onion fly). There are many varieties of onion, some red and some white. The older ones are often considered the best, Japanese varieties are getting more common and are planted/sown in the autumn to over winter and are often ready to harvest 4 to 6 weeks earlier than spring varieties. 'Senshyu Yellow' is an overwintering Japanese onion with golden skin and white flesh. These onions are usually sown between late summer and early autumn, Aim for the development of two or three proper leaves before the start of regular frosts, any larger and the onions will bolt in the following spring.
Contributed by @Arabella
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Full sun
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Occasional watering
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A little frost hardy: 32F (0°C)
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Moist and free draining
Common name
Onion 'Senshyu Yellow'
Latin name
Allium cepa (Cepa Group) 'Senshyu Yellow'
type
Vegetable
family
Amaryllidaceae
ph
7.0 - 8.5 Acid - Neutral
Plant & bloom calendar
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Best time to plant
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When to harvest
full grown dimensions
Allium cepa (Cepa Group) 'Senshyu Yellow'
Onions can be grown from seed or sets, (sets are immature onions, the size of marbles, grown the previous year, and they are less prone to mildew and onion fly). There are many varieties of onion, some red and some white. The older ones are often considered the best, Japanese varieties are getting more common and are planted/sown in the autumn to over winter and are often ready to harvest 4 to 6 weeks earlier than spring varieties. 'Senshyu Yellow' is an overwintering Japanese onion with golden skin and white flesh. These onions are usually sown between late summer and early autumn, Aim for the development of two or three proper leaves before the start of regular frosts, any larger and the onions will bolt in the following spring.
Propagation by seed indoors in Spring
From Early Spring TO Early Spring
Sow onion seed thinly in seed-trays or modules or direct in a prepared greenhouse border, in early Spring, ready to transplant to final positions in late spring.
Propagation by seed in late Summer
From Late Summer TO Early Autumn
For Japanese onions sow in final positions, in prepared beds, to establish themselves before the first frosts. Do not plant too early, because too much fresh growth will cause bolting (going to seed) next Spring. Aim for not more than three true leaves before frosts.
Planting outdoors in Spring
From Mid Spring TO Late Spring
Plant out to final positions in mid to late spring 6" between plants in rows 12" to 15 " apart, in prepared ground, limed to keep soil neutral to alkaline
Planting onion sets outdoors
From Early Spring TO Mid Spring
Plant out onion sets in early spring in well prepared beds, limed late in the previous year, 6" apart in rows 12" to 15" apart.