Plant onion sets so that the tips are just showing and firm the soil around them from mid-March to mid-April, 15cm (6in) apart in rows 30cm (12in) apart. Lift the onions when they are mature (normally in August) and allow them to dry before using. Store the fully ripened, sound bulbs in nets or trays and you can use them throughout the autumn and winter.
Plant shallot sets in full sun in fertile, well-drained soil from September to February, spacing them 15cm (6in) apart in rows 30cm (12in) apart, with just tip of each set showing above the soil surface.
Avoid freshly manured ground, and for the healthiest crop, plant in a different area of the garden each year, avoiding sites where onions, garlic, leeks or other alliums have grown within the last 3-4 years.
Keep the area free of weeds and water during dry spells while the plants are actively growing, reducing watering as the bulbs begin to mature. Lift the shallots once the foliage turns yellow and starts to die back, then leave the bulbs to dry thoroughly in a warm, airy place before storing them in a cool, dry, frost-free location.
Softneck garlic is typically easier to grow in milder areas and stores much longer than hardneck types, often well into the following spring or longer dried and stored properly.
Plant individual cloves in autumn or early spring, spacing them 15-20cm (6-8in) apart in rows around 30cm (12in) apart, in a sunny spot with free-draining soil. Avoid heavy or waterlogged ground and don’t plant into freshly manured beds. Set cloves just below the surface, with the tip just visible or 2.5cm (1in) deep.
Water during prolonged dry spells, especially from late spring when bulbs are swelling, and keep the area weed-free. Unlike hardnecks, softnecks don’t produce scapes, and typically form more cloves per bulb.
Harvest from mid-June to July once the foliage begins to yellow and flop, lifting gently and allowing bulbs to dry thoroughly in a well-ventilated, shaded area. Lay the bulbs (with stems and roots still attached) somewhere dry, airy, and out of direct sunlight for 2-3 weeks. A shed, greenhouse with the vents open, or a covered porch all work well. Once 'cured', they can be plaited or stored in mesh bags in a cool, dry place.