Very quick growing salad onions, sow in succession for a continuous crop all spring, summer and autumn.
Spring onions will grow in any good fertile soil provided it is well drained. Sow from late winter to summer at 3 weekly intervals. For an early spring crop sow in autumn and over winter. Sow thinly 6mm (¼in) deep in drills 15cm (6in) apart.
For years onions have been used as one of the oldest medicines for their anti-bacterial, antiseptic and anti-asthmatic properties. They have also shown to lower blood pressure and cholesterol levels.