We're offering you a Onion (Spring) Stuttgarter Giant for £3.99, saving you up to 56% off Thompson and Morgan's's price of £8.99 (correct as of 03.02.2026).

Onion 'Stuttgarter Giant' - Robustness and Exceptional Flavor

Grow a garden staple with Onion (Spring) 'Stuttgarter Giant'. This classic Allium cepa variety is prized for its semi-flat, golden bulbs and reliable spring planting performance. Favoured by both home gardeners and commercial growers, it delivers a satisfying crunch and robust flavour in every harvest.

Why Choose 'Stuttgarter Giant'?

• Bountiful Yields: Enjoy a plentiful supply of medium to large onions throughout the season.
• Compact Growth: With a height of 45cm (18") and a tidy spread of 15cm (6"), it fits easily into any vegetable patch or raised bed.
• Strong Performance: This variety stands out for its resilience, outshining competitors like 'Red Baron' in many gardens.

Planting & Care Guide

• Best Planting Time: Sow sets outdoors from February to April once the soil is workable.
• Soil Requirements: Prefers fertile, well-drained soil with neutral pH (6.0–7.0). Avoid waterlogged areas.
• Sunlight: Thrives in full sun—choose an open, sunny spot for optimal growth.
• Watering: Water regularly during dry spells but avoid overwatering; onions dislike soggy roots.
• Harvest: Lift bulbs from July to August when foliage yellows and topples over naturally.

Design Tips & Companion Planting

• 'Stuttgarter Giant''s neat form suits orderly rows or mixed vegetable beds.
• Pair with carrots, beetroot, or lettuce for efficient use of space and natural pest deterrence.

FAQs

• When should I plant 'Stuttgarter Giant' onions?
  Sow sets outdoors from February to April for the best results.
• How long until harvest?
  You can typically harvest mature bulbs between July and August once the tops have yellowed and fallen over.
• What soil is best?
  This variety prefers fertile, well-drained soil with neutral pH. Avoid heavy clay or waterlogged sites for optimal bulb development.