Growing at a glance
- Sow outdoors: usually April to July once the soil is workable; small successional sowings can extend baby-leaf picking.
- Sow depth and spacing: about 2.5 cm deep; thin standard plants to around 30 cm apart, with rows about 45 cm apart.
- Position: full sun or light shade, in fertile soil that holds moisture without becoming waterlogged.
- Harvest: outer leaves from summer into autumn; a July sowing can provide leaves the following spring in many sites.
Prepare and sow
Chard is a leafy form of beet, grown for its broad leaves and coloured or white stalks. It tolerates cool UK weather better than summer heat, and one healthy plant can provide repeated pickings. Choose a site with sun or light afternoon shade in hot, dry locations. Work in garden compost before sowing if the soil is low in organic matter; do not add fresh manure directly before sowing.
Sow directly because the large seeds are easy to handle. Make a shallow drill roughly 2.5 cm deep, water its base if the soil is dry, and place seeds about 10 cm apart. Cover lightly and label the row. Each knobbly seed cluster may produce more than one seedling: once seedlings are established, thin gradually to the final spacing, cutting extras at soil level to avoid disturbing the remaining roots. Young thinnings can be eaten if clean and healthy.
Care for steady leaf growth
Keep the bed weed-free while plants establish. Water deeply when the soil begins to dry, especially during hot weather and while leaves are expanding. A mulch of mature compost helps conserve moisture after the soil is already damp. Container plants dry faster and need more frequent checks. Avoid routine high-nitrogen feeding; overly lush growth is not a substitute for even moisture.
A spring sowing can crop through summer, while a second sowing in mid-summer gives younger plants for autumn and often spring picking after winter. In mild districts, plants may keep producing through much of winter; fleece can reduce damage in cold spells, but hard frosts and prolonged freezing can still stop growth. Remove flower stems if plants bolt, then replace them if leaves become tough.
Pests, harvest and troubleshooting
Slugs and snails can damage seedlings, particularly in damp weather. Leaf-miner larvae make pale winding trails within leaves; remove affected leaves promptly and use fine insect mesh over new sowings if the pest is a recurring problem. Keep mesh edges sealed and inspect underneath for slugs. Good spacing and watering at soil level help reduce leaf diseases; remove badly affected foliage rather than leaving it to decay in the bed.
Begin picking when leaves are a useful size. Cut outer leaves and stalks cleanly close to the base while leaving the central crown and several younger leaves intact. Regular light harvests encourage replacement growth. If the whole plant is needed, established plants can be cut above the crown so they may regrow, but allow time before the next harvest. Wash soil away and refrigerate; leaves are best used fresh or blanched and frozen.
Common mistakes
- Sowing only once in spring and expecting tender leaves all year; a midsummer sowing helps bridge late-season gaps.
- Leaving plants crowded, which limits airflow and produces small, weak leaves.
- Letting the root zone dry during leaf expansion, or trying to compensate later with repeated shallow watering.
- Cutting the central growing point during routine picking instead of taking outer leaves.