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

Onion 'Sturon' Variety

Grow award-winning onions with Onion (Spring) 'Sturon'! This time-honoured Allium cepa variety is a favourite among UK gardeners for its consistent yields and exceptional keeping qualities. Recognised with the RHS Award of Garden Merit, 'Sturon' delivers semi-round, golden bulbs that store well—so you can enjoy your home-grown onions long after harvest.

Why Choose Onion 'Sturon'?

• Reliable Crop: 'Sturon' is celebrated for its robust growth and uniform bulbs, making it a staple in both kitchen gardens and allotments.
• Space-Saving: With a mature height of 45cm (18") and a spread of just 15cm (6"), this onion fits perfectly into borders or compact vegetable beds.
• Long Storage: Harvested bulbs keep their quality in storage, letting you enjoy your onions well into winter.
• Aesthetic Appeal: Upright green foliage adds structure and freshness to spring beds.

Growing Guide

• Sowing Time: Plant sets between February and April for best results.
• Sunlight: Prefers full sun; ensure at least 6 hours of direct light daily.
• Soil Requirements: Grows best in fertile, well-drained soil with neutral pH (6.5–7.5).
• Caring For Your Crop: Keep soil moist but not waterlogged. Remove flower heads to direct energy into bulb formation.
• Harvesting: Lift bulbs from July when foliage begins to yellow and topple. Dry thoroughly before storing.

Design & Companion Planting Tips

• 'Sturon' pairs well with carrots, beets, and lettuce—companion planting helps deter pests naturally.
• Add to mixed vegetable plots or edge sunny borders for an edible display.

FAQs

• When is the best time to plant Onion 'Sturon'?
  The ideal planting window is February to April when the soil is workable and frost risk is low.
• How long does it take to mature?
  'Sturon' typically matures in about 20–24 weeks after planting. Harvest from July onwards as foliage yellows.
• What type of soil does it prefer?
  This variety thrives in fertile, well-drained soil with a neutral pH between 6.5 and 7.5. Avoid heavy clay or waterlogged sites.