Botanical Name: Allium fistulosum
This very hardy strain can be sown until October for use the following spring.
Mr. Fothergill's Packet Seeds Spring Onion White Lisbon Winter Hardy
Sow seeds 0.5in (1cm) deep in rows spaced 6in (15cm) apart. Thinning is not usually required but do ensure to keep the soil moist in dry conditions.