Welsh Onion 'Kroll' – Seeds (Allium fistulosum)

The Welsh Onion 'Kroll' is a hardy and versatile perennial onion grown for its slender, upright stems and mild, onion-like flavor. Unlike bulb onions, it does not form bulbs but produces clusters of long, hollow stems that can be cut and used fresh like spring onions or left to grow for a stronger flavor. An easy, cut-and-come-again crop that thrives year after year.

How to Grow

• Sow seeds outdoors from March to July or indoors earlier for transplanting.

• Sow thinly, 1 cm deep, in rows 20 cm apart.

• Thin seedlings to 10 cm spacing once established.

• Prefers well-drained, fertile soil in full sun.

• Harvest by cutting stems as required, leaving roots intact for regrowth.

Key Features

• Perennial onion producing clusters of hollow stems

• Mild, fresh onion flavor

• Easy cut-and-come-again harvest

• Hardy and long-lived in the garden

• Perfect alternative to spring onions

Ideal For

• Soups, salads, stir-fries, and garnishes

• Kitchen gardens, allotments, and containers

• Low-maintenance perennial cropping

• Year-round use in cooking

Sowing & Harvest

• Sow: March to July

• Depth: 1 cm

• Spacing: 10 cm between plants, 20 cm between rows

• Harvest: June to October, with regrowth year after year

Quick Tip

• Divide clumps every few years to keep plants vigorous and productive.