How to grow brussels sprouts in a raised bed

Brussels sprouts are a long-haul winter crop for the patient gardener — months in the ground, but a tall stalk studded with sprouts is a real prize, and they're sweetest after a cold snap.

Quick facts

• Position: full sun
• Spacing: 50–60 cm apart
• Tub depth: our 35 cm depth
• Time to harvest: 4–6 months

When should I plant brussels sprouts?

Sprouts need a long, cool season — plant in late summer to autumn so they mature through the cold, which sweetens them. Our free garden calendar shows the right months for your postcode.

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

How do I grow brussels sprouts in a raised bed?

Plant into rich, firm mix and stake tall plants in windy spots. Like all brassicas they're a caterpillar magnet, so net the bed early. Pinch out the top once the lower sprouts are forming to size them up.

How often should I water and feed brussels sprouts?

Water deeply and evenly and feed well — a long crop needs steady nutrition.

What pests attack brussels sprouts?

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

What diseases affect brussels sprouts?

The main ones are downy mildew and leaf spot. Good airflow, morning watering and steady moisture prevent most.

What grows well with brussels sprouts?

Aromatic herbs are good neighbours; keep brassicas away from strawberries. See our companion planting guide.

When do I harvest brussels sprouts?

Pick sprouts from the bottom of the stalk up, once they're firm and walnut-sized. They hold on the plant for weeks, so take them as you need them.

More growing guides: cabbage, kale and broccoli.

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: Peretz Partensky from San Francisco, USA, CC BY 2.0, via Wikimedia Commons.