How Do You Grow Spring Onions Inside?

You can easily grow spring onions inside, either from seed or by regrowing the roots of store-bought onions. Here's how:

Method 1: Growing Spring Onions from Seed

Choose a Container: Select a pot or container with drainage holes to prevent root rot. A pot that's at least 6 inches deep and wide is ideal.
Prepare the Soil: Fill the container with a well-draining potting mix.
Sow the Seeds: Sprinkle spring onion seeds evenly over the soil surface. Cover them with a thin layer of soil (about ¼ inch).
Water Gently: Moisten the soil thoroughly with a gentle spray. Avoid overwatering.
Provide Light: Place the pot in a sunny windowsill that receives at least 6 hours of sunlight daily. If you don't have enough natural light, use a grow light.
Keep Soil Moist: Water regularly, keeping the soil consistently moist but not waterlogged.
Fertilize (Optional): Feed the seedlings with a diluted liquid fertilizer every 2-3 weeks to boost growth.
Harvest: When the spring onions are about 6 inches (15 cm) tall, you can start harvesting. Snip the green tops as needed, leaving the roots intact for continued growth.

Save the Roots: When using spring onions in cooking, save the white root ends (about 1-2 inches long) with the roots still attached.
Place in Water: Put the root ends in a glass or jar with enough water to cover the roots.
Sunlight: Place the glass in a sunny windowsill.
Change Water Regularly: Change the water every 1-2 days to prevent bacterial growth.
Plant in Soil (Optional): After a week or two, when the roots have grown longer and new green shoots appear, you can transplant the regrown spring onions into a pot with soil for continued growth. This allows for more substantial bulb development. Follow steps 6-8 from the "Growing Spring Onions from Seed" method.

Drainage is Key: Always use pots with drainage holes to prevent root rot.
Water Consistently: Keep the soil consistently moist, but avoid overwatering.
Sunlight is Essential: Spring onions need plenty of sunlight to thrive.
Harvest Regularly: Harvesting encourages further growth.

Growing spring onions inside is a simple and rewarding way to have fresh greens readily available, all year round.