When to plant Shallots in Arid Australia

Arid zone — applies to Alice Springs, Mildura, Broken Hill, Kalgoorlie, Port Augusta and similar areas. Growing elsewhere? Temperate · Cool · Subtropical · Tropical.

Shallots can be sown or planted direct in any month, January through December, giving arid gardeners real flexibility to work around the extremes. Set bulbs or seed at a 30-50 mm depth, space plants 15-20 cm apart in rows 25-30 cm apart, and expect 84-105 days to a mature clump. Seed germinates in 10-14 days. In practice, autumn and late-winter plantings do best in places like Mildura and Port Augusta, since a bulbing crop appreciates cool establishment before the summer glare. Keep them clear of beans, but a border of carrots benefits from the Allium scent that deters carrot fly.

Sowing calendar — arid zone

Green months are your sowing window: January to December.

Growing notes

Shallots are among the most forgiving alliums for the dry inland, partly because you can plant them almost year-round and partly because their shallow, fibrous roots respond well to steady drip irrigation. A single planted bulb multiplies into a clump, so a modest bed goes a long way. The best clumps come from autumn or late-winter plantings around Alice Springs and Broken Hill, when cooler soil lets the plants build good leaf before the heat pushes them to bulb up.

The main failure mode here is bolting and small bulbs when shallots are planted into hot soil or stressed for water. Erratic watering during a heatwave signals the plant to run to seed, so consistent moisture matters more than quantity; a drip line and a straw mulch keep the shallow roots cool and evenly damp. Ease off water only in the final couple of weeks to firm the bulbs for storage.

Growing tips:

• Plant bulbs with the tips just at the surface rather than buried deep.
• Keep the bed weed-free; shallots compete poorly against weeds.
• Avoid planting near bush beans, as alliums inhibit their growth and their nitrogen-fixing bacteria.
• Lift the whole clump once the tops yellow and fall over, then dry the bulbs in a shaded, airy spot before storing.

Shallots at a glance

Companion planting

Grows well with

Carrot: Allium scent deters carrot fly

Keep away from

Bean (Bush): Alliums inhibit bean growth

Bean (Bush): Alliums inhibit nitrogen-fixing bacteria

Common questions

Can you grow shallots all year in arid Australia?

You can plant them in any month, but autumn and late-winter plantings give the best clumps. Cool establishment before summer lets the plants build leaf and bulb up well, whereas midsummer plantings are more prone to bolting.

Why are my shallots bolting to seed?

Heat stress and inconsistent watering are the usual triggers. Planting into hot soil or letting the bed dry out during a heatwave signals the plant to flower, so keep moisture steady with drip irrigation and mulch, especially through the warmer months.

How deep should I plant shallot bulbs?

Plant at a depth of 30-50 mm, with the bulb tips sitting just at or near the soil surface. Burying them too deep slows growth and can rot the bulb in wet soil, so shallow planting suits them best.

Can I grow shallots next to carrots?

Yes, and it is a good pairing. The Allium scent of shallots helps deter carrot fly, so a border alongside carrots benefits both. Just keep shallots well away from bush beans, whose growth alliums inhibit.

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