Add nitrogen-rich fertiliser at planting time and every few weeks throughout the season. Be sure to practice crop rotation each year too. Start onion seeds indoors. It can take up to two weeks for ...
Where possible, choose onion sets that have been heat-treated. This means their flower embryos have been killed, so they're less likely to run to seed or bolt. Generally, growing onions from sets ...
Plant seeds as soon as the soil can be worked, usually from mid to late March. Wide-row spacing also works well when planting onion seeds. Plant the seeds 1/4 to 1/2 inch deep in the soil.
£49 year or £4.99 a month, cancel anytime. Onions need plenty of time to grow so it's best to sow them early in the year in January or February. Exhibition growers sow their onions as early as ...