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Contrary to its name, the spring onion is not only in season in spring. It can be sown over a long period of time. But what exactly is required for a promising seed followed by a successful harvest?
The right timing
Spring onions are usually sown directly outdoors between March and May. The ideal period is between late March and early April. If you then sow the spring onions, you can expect a good harvest as early as June.
You also have the alternative of growing the seeds under glass in February and planting the young plants outdoors in early April. In addition, it is possible to only sow the spring onions in late summer (August/September) and finally harvest them in the following spring between April and May.
Your demands on location and soil
Spring onions prefer to grow in sunny locations. They are also content with penumbra. A location that is not completely sheltered from the wind is also recommended. Otherwise, this would favor the development of fungal diseases.
Before you get to work, you should take a look at the substrate. Spring onions need loose and finely crumbly soil to grow and thrive. It should be profound and prevent waterlogging from forming. In addition, the plants benefit from a high nutrient content.
The sowing itself
In the world of spring onions, you are spoiled for choice among the different varieties. Recommended varieties include:
- 'Negaro' (white)
- 'Ishikura' (white)
- 'Red of Florence' (red)
- 'Tonda Musona' (white)
- 'White Lisbon' (white)
- 'Lilia' (violet)
- 'Freddy' (white)
After you have decided on a variety, you can start:
- 1. Dig up the soil 30 cm deep
- 2. Create rows with a distance of 25 to 40 cm
- 3. Scatter seeds 1 to 2 cm deep in grooves
- 4. Cover seeds with soil
- 5. Watering
- 6. Germination time: 10 to 20 days at a temperature between 15 and 25ºC
tips and tricks
Equipped with a pot or a planter, you can sow spring onions just as well on the balcony, terrace or window sill.