Scallion

Growing in Pots, Balconies & Indoors

Scallions (green onions) are one of the easiest edibles for a pot indoors – the grower does not class them as a full houseplant, but they regrow readily on a bright, sunny windowsill, so you can keep snipping the green tops.

Quick Details

• Container Size: A pot or planter with free drainage (the grower confirms container growing but gives no set size); a small-to-medium pot is plenty for a bunch
• Indoor Suitability: Not a deep-room houseplant, but excellent on a bright, sunny windowsill
• Best Spot: Full sun to half shade
• Soil & Drainage: Loose, free-draining, organic-rich mix
• Watering in Pots: Average, even moisture; let the pot drain freely.

Indoors & On the Windowsill

• Houseplant note: The grower marks them as not an indoor houseplant in the strict sense, but scallions take very well to a sunny sill.
• Windowsill growing: Grow them in a pot on the sunniest sill and cut the green tops as needed – they regrow quickly from the base; you can even root trimmed white ends in the mix.
• Safety: Onions, garlic and their relatives are toxic to cats and dogs – keep pots out of pets’ reach if you grow them indoors, and never let pets nibble the leaves.

On a Balcony or Patio

• Light and shelter: A sunny balcony or patio suits it well; containers dry quickly, so check moisture often in warm weather.
• Practicalities: Mind the weight of a watered planter and manage drainage runoff with a tray or pot feet.

Choosing the Pot, Soil & Long-Term Care

• Pot and drainage: Choose a pot with strong drainage holes; if you stand it on a saucer, empty the saucer promptly so the roots never sit in water. Terracotta breathes and dries faster, while glazed or plastic pots hold moisture longer.
• Potting mix: Use a well-aerated, organic-rich mix – a good potting soil, or peat/coir blended with perlite or vermiculite for drainage and air.
• Watering: Water regularly to keep the mix evenly moist – pots dry out far faster than open ground, so check often in heat – but never leave it standing wet.
• Feeding: Potted plants run through their soil faster because nutrients leach out with every watering, so feed a little more often than you would in open ground.

Bloom & Edible Flower Guide

Quick Details

• Bloom Season: Spring to summer
• Time to First Bloom: Usually in its second year, or earlier if stressed or cold-shocked
• Flower Appearance: A rounded umbel of small white star-shaped flowers on a hollow stem
• Edibility: Edible – the mild, oniony flowers make a pretty garnish

Detailed Blooming Overview

Scallions are picked young for their slim stems and leaves, so most are eaten long before flowering. If left in the ground they run up a hollow stalk topped with a white flower globe in spring or summer. Flowering toughens the stem, so cut it out for the best eating – or leave a plant or two to bloom for the bees and for edible blossoms.

Flower Characteristics

• Small white star-shaped flowers gathered into a round umbel.
• Carried on a slender, hollow stem above the leaves.
• Attractive to bees and hoverflies.

Bloom Care & Thinning

• Managing the bloom: Thin (remove) the flower stems unless you want the blooms or seed – it keeps the leaves tender.
• Pollination: By bees and flies.
• In the kitchen: Scatter the individual florets over salads and soups for a gentle onion note.