Heat Treated Onion Sets

Make growing your own onions a breeze with Mr Fothergill's heat-treated onion sets. The best choice for beginners, or an easy shortcut for experienced gardeners, heat-treated onion sets grow and establish much more rapidly. This means larger bulbs and higher yields, with virtually no risk of premature ‘bolting’.

Expertly heat-treated for several months, these onion sets will arrive at your door ready for immediate planting. Choose from many popular varieties, including the AGM-winning Red Baron, known for its beautiful crimson-skinned bulbs. Beginners will appreciate our reliable Stuttgarter Riesen sets, which boast great disease resistance. Discover our full range of heat-treated onion sets below.

Why Choose Our Heat Treated Onion Sets?

Onions are incredibly versatile: a staple in everything from soups and sandwiches to pasta sauces. Growing your own lets you enjoy the freshest bulbs possible, with an unbeatable crisp texture and home-grown flavour.

Heat-treated onion sets are quicker and easier to grow than onion seeds, making them great for busy gardeners. The bulbs are carefully heated and cooled over several months – a natural process which kills the sprout stalk. This leads to faster growth and bigger onions and also prevents premature running to seed (‘bolting’). 

Our heat-treated onions can be planted directly in the ground or grown in pots. Pair them with bushy tomato plants or dwarf beans for a productive container vegetable garden.

Order Our Heat Treated Onion Sets Today

Here at Mr Fothergill's, we believe that growing your own vegetables should be simple, fun, and rewarding for everyone. All of our onion, garlic, and shallot sets are expertly grown, carefully hand selected and delivered to your door at the perfect time for planting.

Order your heat-treated onion sets today and start growing the kitchen garden of your dreams – 100% satisfaction guaranteed.