How to grow Vietnamese mint in a raised bed

Vietnamese mint (rau ram) isn't a true mint but delivers a hot, coriander-like punch to Southeast Asian salads and soups. It's a lush, spreading, warmth-loving herb that romps away in a moist raised bed.

Quick facts

• Position: part shade to full sun; loves warmth & moisture
• Spacing: 30–40 cm apart
• Tub depth: our 23 cm+ depth
• Time to harvest: 8–10 weeks

When should I plant Vietnamese mint?

Vietnamese mint is frost-tender — plant in spring and summer. In warm, frost-free areas it's a lasting perennial; in cold zones, protect or overwinter a cutting. Our free garden calendar shows the right months for your postcode.

• Subtropical (Brisbane & SEQ): August to April
• Temperate (Sydney, Melbourne, Adelaide, Perth): September to March
• Cool & mountain (Tasmania, Canberra, highlands): October to January
• Tropical (Cairns, Darwin): All year round
• Arid inland: September to October

How do I grow Vietnamese mint in a raised bed?

Plant into rich, constantly moist mix — it even grows in boggy spots and beside ponds. It spreads by runners, so contain it if space is tight. Cut it back to keep fresh growth coming.

How often should I water and feed Vietnamese mint?

Keep it moist at all times — unlike Mediterranean herbs, this one never wants to dry out.

What pests attack Vietnamese mint?

Keep an eye out for aphids — though most herbs are pleasingly pest-resistant. See our safe pest guide.

What are the common problems with Vietnamese mint?

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

What grows well with Vietnamese mint?

Give it a moist corner; it grows well beside lemongrass and other Asian herbs. See our companion planting guide.

When do I harvest Vietnamese mint?

Pick sprigs and leaves as you need them; regular picking keeps it bushy. Always use it fresh.

More growing guides: mint, Thai basil and lemongrass.

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: Qwert1234, CC BY-SA 4.0, via Wikimedia Commons.