Good enough to eat
Spring onions Onions are among the easiest veg to grow and spring onions are an ideal catch crop because they are fast-growing and will have been harvested by the time you need to plant later, more tender, crops such as runner beans and tomatoes.
You can grow a worthwhile crop in the smallest space, even a container, but if you want a continuous crop through summer, you’ll need to sow every fortnight in spring, as they are ready to harvest in 10-12 weeks.
Sow them outside from mid-March either in pots of multipurpose compost or in patches in the border.
In the garden, sow seeds in rows 10cm apart, covering with around 1.5cm of compost and thin the seedlings to 2.5cm apart.
Water weekly in dry weather to keep them growing rapidly and harvest them when the stems are 1cm thick. Good varieties include ‘White Lisbon’ and ‘Guardsman’.