We're offering you a Onion (Spring Heat Treated) Romy for £3.99, saving you up to 50% off Thompson and Morgan's's price of £7.99 (correct as of 03.02.2026).

Grow Robust, Flavourful Onions with 'Romy'

The Onion 'Romy' (Allium cepa) is a spring-planted, heat-treated red onion variety prized for its vigorous growth and outstanding storage qualities. Its strong root system supports healthy development in diverse soils, making it a top choice for both novice and seasoned gardeners.

• Botanical Profile: 'Romy' is part of the Allium family, known for producing medium-sized, deep red bulbs with narrow necks and strong skins.
• Culinary Appeal: The firm, crunchy flesh and well-balanced flavour elevate salads, stir-fries, and roasts. Its robust taste stands out in both raw and cooked dishes.
• Storage Benefits: Thanks to its heat treatment, 'Romy' resists premature sprouting and stores longer than many other red onions—enjoy your harvest well into the off-season.

How to Plant & Care for Onion 'Romy'

• Planting Time: Sow outdoors from late February through April once the soil is workable.
• Location: Prefers full sun and fertile, well-drained soil. Raised beds or open ground both work well.
• Soil: Grows best in neutral to slightly alkaline soils (pH 6.0–7.0). Add compost or well-rotted manure before planting for best results.
• Spacing: Plant sets 10cm apart in rows spaced 25cm apart. Keep soil consistently moist but not waterlogged.
• Maintenance: Remove competing weeds regularly. Feed with a balanced fertiliser every few weeks during active growth.
• Harvesting: Onions mature in late summer; lift when foliage turns yellow and begins to fall over. Cure bulbs in a dry, airy place before storing.

'Romy' Variety Highlights & Garden Uses

• Tough & Reliable: Bred for resilience—performs well even in unpredictable spring weather.
• Bountiful Yields: Expect uniform bulbs that store beautifully through autumn and winter.
• Versatile Placement: Ideal for vegetable beds, allotments, or as part of companion plantings with carrots or lettuce (helps deter pests naturally).

FAQs

• When should I plant Onion 'Romy' sets?
  Sow outdoors from late February to April when the soil is workable and frost risk has passed.
• How long will harvested onions keep?
  'Romy' onions store for several months if cured properly in a dry, ventilated space after harvest.
• What care do these onions require?
  'Romy' prefers full sun, regular watering during dry spells, and weed-free beds. Feed occasionally with balanced fertiliser for best yields.