How to grow watercress in a raised bed

Watercress is a peppery, super-nutritious green that loves constant moisture — and you don't need a stream. In a raised bed, just keep one damp corner permanently wet and it'll romp away.

Quick facts

• Position: part shade; loves constant moisture
• Spacing: 10–15 cm apart
• Tub depth: our 23 cm depth, kept wet
• Time to harvest: 6–8 weeks

When should I plant watercress?

Watercress grows in the cooler months in warm areas, spring to autumn in cooler ones. Sow or plant into a spot you can keep permanently damp. Our free garden calendar shows the right months for your postcode.

• Subtropical (Brisbane & SEQ): April to August
• Temperate (Sydney, Melbourne, Adelaide, Perth): March to May and September to October
• Cool & mountain (Tasmania, Canberra, highlands): March and September to November
• Tropical (Cairns, Darwin): May to July
• Arid inland: April to June

How do I grow watercress in a raised bed?

Grow it in the wettest corner, or stand a pot in a saucer of water that you keep topped up. Rich, constantly moist soil is the whole secret. Pinch out flowers to keep the leaves coming.

How often should I water and feed watercress?

Never let it dry out — watercress wants wet feet. Change or refresh the water occasionally to keep it sweet.

What pests attack watercress?

Keep an eye out for aphids and slugs and snails. Most are easily managed — see our safe pest guide.

What diseases affect watercress?

The main one is downy mildew, usually from damp, crowded conditions. Good airflow and morning watering prevent most.

What grows well with watercress?

Give it a permanently moist spot; it grows well near other water-loving greens. See our companion planting guide.

When do I harvest watercress?

Pick sprigs as you need them — regular cutting keeps it lush and stops it flowering. Use it fresh.

More growing guides: sorrel, spinach and lettuce.

Plan your patch: our free garden calendar shows what to plant now where you live. Ready to grow? Browse our raised garden beds or build your own with the garden bed builder.

Image: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons.