Leek

Leek Seeds

Leeks are one of the finest vegetables for the kitchen garden, producing long, succulent white stems with a delicate, sweet onion flavour that improves as the weather cools. They are exceptionally hardy, standing through autumn and winter when many other vegetables have finished cropping, making them an invaluable addition to any allotment or vegetable plot. Whether used in soups, stews, pies or simply steamed with butter, home-grown leeks offer outstanding flavour, freshness and versatility. Modern varieties provide excellent vigour, disease resistance and reliable performance, while traditional exhibition strains continue to delight competitive growers across the UK. (rhs.org.uk)

For the best results, leek seeds are usually started indoors from late winter into early spring before being transplanted outside once the young plants are well established. Sowing into quality Propagation Equipment creates the ideal conditions for healthy germination. A ROOT!T Heat Mat provides gentle bottom warmth to encourage quick, even germination, while the ROOT!T 42W LED Grow Light produces sturdy, compact seedlings with strong root systems ready for planting into their final growing position. Starting plants under protection allows for an earlier season and helps produce vigorous crops. (rhs.org.uk)

Once seedlings have developed several true leaves, transplant them into individual pots using premium Growing Media such as Jiffy PRO7 Coco 70/30 or These professional growing media provide excellent drainage, moisture retention and root aeration, encouraging vigorous root development before plants are transferred into fertile vegetable beds or allotments.

Leeks thrive in a sunny, open position with fertile, moisture-retentive soil enriched with organic matter. Regular watering during dry spells and occasional feeding will encourage strong, uninterrupted growth. For exhibition-quality stems, many growers plant young leeks into deep holes and gradually earth them up or use blanching tubes to produce long, beautifully blanched shanks. Harvest can begin in late summer with early varieties and continue right through winter with hardy cultivars, ensuring a dependable supply of fresh leeks for many months. (rhs.org.uk)

At Fosters Seeds we offer a carefully selected range of leek varieties chosen for their excellent germination, vigour and dependable performance. We are particularly proud of our Pot Leeks and Blanch Leeks, many of which have been bred by Keith Foster, whose work has made a significant contribution to pot leek breeding in the North East of England. Over many years, Keith has developed and refined exhibition strains renowned for their length, purity of white, uniformity and outstanding show quality. His breeding has helped countless exhibitors achieve success on the show bench while preserving and advancing one of the region’s great horticultural traditions. Whether you are growing leeks for the kitchen, the allotment or serious exhibition competition, our seed is selected to deliver exceptional results. Browse our complete range of Vegetable Seeds, Propagation Equipment and Growing Media to give your leeks the very best start and enjoy outstanding harvests throughout the season.