Onion 'Ailsa Craig' Seeds


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This enduringly popular and well known variety makes a splendid choice for the show bench and is equally good in the kitchen. The quality, large, globe shaped bulbs have a rich, golden, straw coloured skin and an excellent mild flavour. For the largest bulbs, Onion 'Ailsa Craig' can also be sown in modules in autumn for transplanting outdoors in spring. Height: 45cm (18"). Spread: 10cm (4").

Direct sow onions outdoors in spring on any firm, well-drained soil in full sun. Sow thinly at a depth of 1cm (1/2") and a distance of 30cm (12") between rows. Prepare the planting area several weeks in advance by incorporating some well-rotted garden compost to improve drainage and soil fertility. Avoid planting onions on freshly manured soil. On particularly wet ground, try growing onions in raised beds. When large enough to handle, thin onion seedlings to 10cm (4") apart for medium sized bulbs, or at a slightly wider spacing if larger bulbs are required.

Alternatively sow onion seed indoors in module trays at a depth of 1cm (1/2"), using free-draining, seed sowing compost. Place in a propagator or seal container inside a plastic bag at a temperature of 10-15C (50-59F) until after germination which usually takes 10-14 days. Once germinated, grow onions on in cool conditions until all risk of frost has passed and they are large enough to plant outdoors at a distance of 10cm (4") apart. Cover with a protective netting or fleece to prevent attack from birds and insects. Water the plants thoroughly after planting.

Pretty Wild Seeds are registered with the Department for Environment, Food & Rural Affairs (DEFRA) under number 7529, so you can have confidence in both our products and advice. Although our products are listed in weights and acres, we can supply in additional quantities upon enquiry so if you need a larger supply, please don't hesitate to give us a call.

  • 1,500 seeds for £1.99
  • 10,000 seeds for £7.99
  • 100g for £12.99
  • 500g for £36.99
  • Quantities from: £1.99




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    The Onion 'Ailsa Craig' Seeds is shown in Fruit Herb and Vegetable Seeds > Vegetables.

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    We happily accept returns within 14 days from date of delivery. All returns must be received in the same condition and packaging we sent them. Postage charges will not be refunded on unwanted products.

    You are solely responsible for ensuring the goods are returned to us. We will not be liable for returns that are lost in the post or lost for any other reason. If a product arrives damaged we will advise the customer how to return the item with all return costs covered by us.  Replacements & refunds will be dispatched / issued on receipt of the returned items only.