Turn Onion Scraps into Endless Greens, Simple Pot Trick (Video)

Transcript

Did you know a kitchen white can sprout onions in just two days?

Did you know a kitchen white can sprout onions in just two days?

Grow Spring Onions Fast

Learn how to turn kitchen scraps into fresh green onions and the trick that makes them keep producing.

Choose your start

Your patience decides the method. Scraps give greens in a week or two, perfect for a windowsill. Small bulbs take three to four weeks and give thicker leaves. Seed is cheapest but needs eight to ten weeks.

First harvest time

If you start with the white root ends, expect the first green cut in just one to two weeks, much faster than growing from seed or bulbs.

Regrow in water

Trim the stem leaving one to two inches of white above the roots. Place the ends upright in a small glass, roots down, and add just enough water to cover the roots. A bright window sparks new green in two to four days.

Water limits growth

The first green rush uses the food stored in the white stub. Subsequent cuts have less to draw on, so leaves turn pale and the base softens. Sunlight won’t fix it; the plant’s reserves are spent.

Pot after first cut

Don’t wait for the water-grown ends to tire. Right after the first harvest, plant the white-rooted ends in a pot, bury the white part, and leave the cut tip just peeking. Soil feeds them, and they’ll keep growing all season.

Pot growing basics

Use a pot at least six inches deep, five to eight litres in volume, with drainage. Press small bulbs two inches apart, leaving the top third above soil. Cut greens after three to four weeks when they’re eight inches tall.

Harvest continuously

Instead of pulling the whole plant, snip the green about an inch above the soil. Water the pot after each cut and stir in a spoonful of compost once a month. A healthy clump can be harvested every two to three weeks through the cool months.

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Read the full guide

The full guide is on thecareonline.com. General information only, so check with your doctor for your own case.