How to Grow Spring Onions: Tips for Success

How to Grow Spring Onions?

To grow spring onions, start by preparing a sunny, well-drained site with cleared soil.

Sow the seeds about 20mm deep and 10cm apart, and thin out the seedlings to 5cm apart.

Water them regularly, keeping the soil moist but not overly saturated.

After 10-14 days, the seeds will germinate and the seedlings will appear.

Once they reach a height of 4-6 inches, transplant them into individual pots or your garden bed, spacing them 4-6 inches apart.

Water them regularly, aiming for about 1 inch of water per week.

Harvest the spring onions when they reach the desired size, cutting them at ground level and leaving the roots in the soil to regrow.

Store the harvested spring onions in the refrigerator for up to 1 week.

Key Points:

  • Prepare a sunny, well-drained site with cleared soil
  • Sow seeds 20mm deep and 10cm apart, thinning out to 5cm apart
  • Water regularly to keep soil moist but not overly saturated
  • Germination occurs after 10-14 days, seedlings appear
  • Transplant into individual pots or garden bed, spacing them 4-6 inches apart
  • Harvest when desired size is reached, cut leaving roots to regrow


Did You Know?

1. Did you know that spring onions belong to the same family as onions and garlic? Allium cepa, also known as the Alliaceae family, includes these three popular culinary ingredients.

2. Spring onions are great companions in your vegetable garden! Planting them alongside carrots or tomatoes can naturally deter pests such as carrot flies and aphids.

3. Want to regrow spring onions from scraps? Instead of tossing out the leftover roots, place them in a glass of water, and you’ll start to see new green shoots sprouting within a few days.

4. Spring onions have a milder flavor compared to regular onions, but the intensity can vary depending on the variety. The white bulbs are the most pungent, while the green parts are milder and often used for garnishing.

5. While some people refer to spring onions as scallions, these two terms actually have a slight difference. Scallions typically have a straighter, thinner shape, while spring onions have a slightly enlarged bulb at the base. However, the terms are often used interchangeably in cooking and gardening.

Growing Spring Onions In Small Spaces

Spring onions are perfect for small gardens or containers, making them a great choice for urban or balcony gardens. These versatile plants can even be grown during winter for a continuous supply of fresh spring onions.

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To successfully grow spring onions, follow these steps:

  1. Choose a sunny site with well-drained soil for optimal growth.
  2. Clear the planting area of any weeds or debris.
  3. Enrich the soil by adding organic matter, such as compost or well-rotted manure, to provide essential nutrients.
  4. Sow the seeds after preparing the soil.
  5. Ensure the plants receive at least six hours of direct sunlight daily to promote proper development.

Sowing And Caring For Spring Onion Seeds

To begin the growing process, sow your spring onion seeds about 20mm deep in the prepared soil. Space the seeds approximately 10cm apart to allow enough room for each plant to grow.

After approximately 10-14 days, the seeds should germinate, and you will start to see seedlings emerging from the soil. At this stage, it is crucial to water the seedlings regularly, ensuring the soil remains moist but not overly saturated.

Once the seedlings have reached a height of about 4-6 inches, they are ready to be transplanted into individual pots or directly into your garden bed. Before transplanting, make sure to amend your garden soil with compost to create a rich, well-draining environment for your spring onions.

Remember to maintain consistent watering, aiming for about 1 inch of water per week. This will help promote healthy growth and ensure your spring onions receive the necessary moisture to flourish.

Harvesting And Storing Spring Onions

Spring onions can be harvested approximately eight weeks after sowing. When the green tops reach a height of about 6 inches, they are ready for picking.

Harvesting spring onions is a simple process. Using a sharp knife or scissors, cut the spring onions at ground level, leaving the roots intact. The roots left in the soil will have the potential to regrow, allowing for continuous harvesting throughout the growing season.

It is best to consume spring onions soon after picking for optimal freshness and flavor. They can be used in various culinary dishes, adding a mild onion flavor to salads, soups, stir-fries, and more.

If you have a surplus of spring onions, they can be stored in the refrigerator for up to one week to maintain their freshness. Simply place them in a plastic bag or wrap them in a damp paper towel to preserve their crispness.

Companion Planting With Mint For Pest Control

Mint can be a valuable companion plant for spring onions as it acts as a natural deterrent against onion fly, a common pest that can damage onion crops. The strong scent of mint confuses and repels the onion fly, reducing the likelihood of infestation.

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To utilize the benefits of companion planting, consider growing mint alongside your spring onions. This can be done by planting mint in separate pots or containers and placing them near the spring onion plants.

Alternatively, you can interplant mint in the same garden bed as your spring onions. However, it is important to note that mint can be an aggressive spreader, so it may be best to grow it in containers or use barriers to prevent its invasive growth.

  • Mint acts as a natural deterrent against onion fly
  • Mint confuses and repels the onion fly
  • Plant mint in separate pots or containers
  • Place mint near spring onion plants to maximize benefits
  • Consider interplanting mint in the same garden bed, but be cautious of its invasive growth

Transplanting Spring Onions Into Individual Pots Or Garden Bed

When your spring onion seedlings have reached a height of about 4-6 inches, it is time to transplant them into individual pots or directly into your garden bed.

If you choose to transplant into pots, make sure each plant has enough space for its roots to grow. Four to six inches of space between each plant is ideal to ensure proper development.

Before transplanting, amend your garden soil with compost to improve its fertility and drainage. Gently remove the seedlings from their original location, careful not to damage the roots, and place them in their new containers or garden bed.

Water the transplanted spring onions regularly, providing them with about 1 inch of water per week. This will help them establish their root systems and encourage healthy growth.

Nutritional Benefits And Culinary Uses Of Spring Onions

Spring onions not only add a delicious flavor to dishes but also provide numerous health benefits. These vegetables are a rich source of vitamins A, C, and K, which are essential for maintaining good overall health.

In addition, spring onions contain minerals such as calcium and iron, which are vital for bone health and the proper functioning of the body. They also offer dietary fiber, which aids in digestion and supports a healthy gut.

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With their mild onion flavor, spring onions can be used in a variety of culinary dishes. They can be enjoyed raw in salads or used as flavorful toppings for sandwiches and burgers. Additionally, spring onions can be cooked in stir-fries, soups, and other dishes to add depth and a delightful taste.

As an added bonus, spring onions are low in calories and fat, making them a healthy addition to any diet.

Frequently Asked Questions

How long does it take to grow spring onions?

Spring onions typically take about eight weeks to grow. However, their growing time may vary slightly depending on factors such as the specific variety of spring onion, the growing conditions, and your desired size. These versatile vegetables have a relatively short growing period, allowing you to plant, harvest, and replant multiple times throughout the growing season if desired.

Can I grow spring onions from onions?

Yes, you can definitely grow spring onions from onions! Surprisingly, you can utilize the roots of onion bunches purchased at the supermarket to create your own supply of spring onions. Simply trim the stems down to a length of 2 or 3cm and plant the roots in potting soil, ensuring that you can spot the green tips emerging, or alternatively place them in a jar filled with water. This method presents an easy and cost-effective way to cultivate spring onions at home.

How do you grow spring onions from water?

To grow spring onions from water, first, trim the spring onions about two to three centimeters from the root. Take the cuttings and place the root-end in a small jar of water, ensuring that the roots are submerged. Find a sunny spot in your house or balcony for the jar, as spring onions thrive in sunlight. Remember to change the water weekly to keep the roots healthy and encourage growth. With time and proper care, you will witness your spring onions flourishing in water, ready to be used in your culinary adventures.

Are spring onions easy to grow?

Absolutely! Spring onions are incredibly easy to grow. All you need is some fertile, well-drained soil and a sunny spot. To ensure a constant supply throughout the summer, simply sow the seeds every three weeks from March to August. With minimal effort, you’ll have an abundant crop of these delicious onions in no time.

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