How to grow kangkong in a raised bed

Kangkong (water spinach) is the fast, tender Asian green behind many a stir-fry — a heat-and-moisture lover that grows at astonishing speed in a warm, wet raised bed.

Quick facts

• Position: full sun; loves heat & water
• Spacing: 15–20 cm apart
• Tub depth: our 23 cm+ depth, kept wet
• Time to harvest: 4–6 weeks

When should I plant kangkong?

Kangkong is frost-tender and loves the heat — grow it from late spring through summer. It grows fastest in warm, wet conditions. Our free garden calendar shows the right months for your postcode.

• Subtropical (Brisbane & SEQ): October to March
• Temperate (Sydney, Melbourne, Adelaide, Perth): November to January
• Cool & mountain (Tasmania, Canberra, highlands): Not really suited to this zone
• Tropical (Cairns, Darwin): All year round
• Arid inland: Not really suited to this zone

How do I grow kangkong in a raised bed?

Sow or plant into rich mix in a spot you can keep very wet — it even grows standing in shallow water. Cut it back and it regrows quickly for repeat harvests.

How often should I water and feed kangkong?

Keep it constantly wet and well-fed — the more water and warmth, the faster it grows.

What pests attack kangkong?

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

What diseases affect kangkong?

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

What grows well with kangkong?

Give it a hot, moist corner; it partners other Asian greens well. See our companion planting guide.

When do I harvest kangkong?

Cut the tender stems and leaves once they're 20–30 cm long; it'll reshoot for several more pickings. Use fresh, stir-fried in minutes.

More growing guides: Malabar spinach, warrigal greens and amaranth.

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: Wee Hong, CC BY-SA 4.0, via Wikimedia Commons.