Tosca produces a torpedo shaped onion with yellow to brown skins. This particular variety has excellent flavour and is suitable for winter storage.
Sow from February to April. Early sowing can be made in pots by sowing the seeds on the surface of the compost and lightly cover. Place at temperature of 14C They can be sown direct from April in drills 1.5cm deep rows 30cm apart. Harden off indoor sowing before planting out 15cm apart. Allow bulbs to mature before lifting