Chard needs an open sunny site in rich, moisture-retentive free-draining soil, although it can tolerate some shade in summer.
Add organic matter the autumn or winter prior to sowing if necessary. Add 70g per sq m (2½oz per sq yard) of Growmore or other general fertiliser.
Sow thinly 2.5cm (1in) deep, 10cm (4in) apart in rows 45cm (18in) apart, from March to July. Two sowings - one in April and the second in July – are usually sufficient. The July sowing provides leaves the following spring when growth resumes.
Alternatively, sow in modules or trays and transplant when large enough to handle.
Sow every two weeks to produce mini-leaves.
Sow in broad drills as ‘cut and come again’ crops from April to August.
Thin seedlings to 30cm (1ft) apart, or every 5cm (2in) for mini-leaves.
Water before the onset of drought; mulch when the soil is warm and moist.
Cover plants for overwintering in October with cloches or protect the crown with straw or similar material, then cover with fleece.
Sow thinly and when conditions are warm. You can help to prevent this disease by making sure there is plenty of space around seedlings and plants to improve air circulation, watering the soil at the base of the plants, and by choosing mildew resistant varieties.
More info on Downy mildew
Remove damaged plant parts before they can become infected. Cut out infected areas into healthy tissue and clear up infected debris. In greenhouses, reduce humidity by ventilating and avoid overcrowding of young plants and seedlings.
More info on Grey mould
Protect the plants from birds by covering them with netting or fleece. Scarecrows and bird-scaring mechanisms work for a while, but the most reliable method of protection is to cover plants with horticultural fleece or mesh.
More info on Birds
Cut off the outer leaves first when they are young and tender, working towards the centre. Don't wait until they reach maximum size.
Harvest regularly to ensure a constant supply of tender re-growth.
Harvest cut and come again crops at any stage when seedlings are around 5cm (2in) tall. The thinnings can also be used whole.
Gather mini-leaves as soon as they are usable. They should re-grow if a small stump is left.
Masterchef’s Gregg Wallace pops chard into his delicious Frittata with parmesan
‘Bright Yellow’ AGM:Bright golden-yellow stalks (petioles) with mid-green puckered leaves.
‘Charlotte’ AGM:Striking red stems and veins, upright leaves and neat habit.
‘Fordhook Giant’ AGM:Attractive shiny green, puckered leaves with long succulent white stalks (petioles).
‘Lucullus’ AGM:Plenty of tender, light green leaves with long succulent white stalks (petioles).