El Niño in Adelaide: What to Plant This Spring

Updated September 2026

Adelaide vegetable garden with mulched beds, tomatoes and olive tree in hot dry spring light

Adelaide, the Hills, the Fleurieu, the Barossa and the Riverland. Mediterranean crops, deep mulch and a tank are the whole game.

Adelaide gardens run on Mediterranean rules every year: wet winter, dry summer, and a spring that is over almost before it starts. El Niño shortens that spring again and dries it out. Low Murray flows and heavy mains reliance mean water is the limiting factor for everything you plant. Lean into what the climate wants, and Adelaide is a superb place to grow.

The forecast for Adelaide & South Australia. Below-average rain and warmer than average days are likely through spring across South Australia. Murray-Darling inflows are expected to be low, which affects Adelaide's mains supply and the Riverland. Fire danger is elevated from late spring. Check the Bureau's ENSO outlook monthly; every El Niño plays out a little differently.

What to plant in Adelaide & South Australia this spring

Plant with confidence

Tomatoes. Plant from mid-October, or earlier on the plains with protection. Choose heat-set and cherry types.
Eggplant, capsicum, chilli. Adelaide's best summer crops. Plant out in October under mulch.
Zucchini, pumpkin, melons. Sow direct in late October. Water at the base, deeply.
Globe artichoke. A perennial made for a dry Mediterranean garden.
Olive, fig, grape, pomegranate. Established trees and vines shrug off a dry spring.
Beans. Dwarf and climbing, sown direct into warm soil.
Silverbeet and warrigal greens. Leafy greens that cope with the heat.
Rosemary, thyme, oregano, sage, lavender. The Adelaide herb garden, and it wants no extra water.

Hold back or plant small

Lettuce, coriander, rocket. Bolt fast. Shade and small batches, or wait for autumn.
Broccoli, cauliflower, cabbage. Finished until autumn. A spring sowing will fail in early heat.
Celery, English spinach, peas. Too hot, too dry.
Sweet corn. Adelaide's thirstiest common crop. Only with a wicking bed.
Cucumber. Bitter under stress. Wicking bed or skip.
New fruit trees. Wait for winter. Spring planting into a dry summer is hard on young roots.

The full month-by-month list for your area is on the Adelaide & South Australia planting calendar, and the app's Plant Now shelf filters it to this month automatically.

Timing this year

The plains are usually frost-free by early October; the Hills can see frost well into November. Check your postcode in the frost and heat lookup. When you are clear, plant straight away. Adelaide's spring window between last frost and first 38C day is short in a normal year and shorter in this one. Everything cool-season waits for a March sowing, when Adelaide's real second season begins.

Water: the local picture

Adelaide draws heavily on the Murray, and low inflows in an El Niño year put pressure on supply and prices. Garden for the least water possible. Deep mulch is not optional here; 75 to 100mm of pea straw or wood chip on every bed. Dig compost into the sandy soils of the western suburbs and the heavy clays of the north to hold moisture. Drip line under mulch, on a timer, running before dawn. Wicking beds for anything thirsty. A rain tank pays for itself faster in Adelaide than anywhere else in the country. Hydrozone the garden: herbs and olives on one line, veg on another, so you never water rosemary to keep a lettuce alive.

The short version: 75mm of mulch, drip line underneath, deep soak twice a week, and a written priority list for when restrictions tighten. The full water-saving playbook is in the national El Niño guide.

Heat and fire

Adelaide heatwaves are dry and long, often three or four days above 40C. Shade cloth at 50 percent over tomatoes, capsicum and eggplant. Water deeply the evening before and again early morning. Pots go to the south side or under the verandah. For fire, the Adelaide Hills, the Fleurieu, the Barossa and the Mid North are all high-risk, and the CFS Fire Danger Season is likely to start early. Clear litter and dry grass, clean gutters, and use gravel rather than straw within a couple of metres of the house.

Your prep checklist

Mulch every bed to 75mm before the first hot week.
Lay drip or soaker line under the mulch, on a tap timer.
Get heat-lovers in as soon as frost risk passes. Hold salad and brassicas for autumn.
Buy shade cloth (30 to 50 percent) now.
Check the rain tank, pump and gutters. Clear litter near the house.
Set up shade and a second water source for chickens and bees.

Print the free El Niño garden prep checklist for the shed door.

See what to plant now in Adelaide & South Australia

The free Planting Season app shows this month's crops for your region, litres per week for every plant, and frost and heat dates by postcode. Pro adds tank tracking and a weather-aware watering planner. Try Pro free for 14 days, no card needed.

Open the App →

Frequently Asked Questions

What are the best low-water vegetables for Adelaide?

Tomatoes, eggplant, capsicum, chilli, zucchini, pumpkin, beans, globe artichoke, silverbeet and Mediterranean herbs. Under deep mulch and drip line they need a soak twice a week at most.

When can I plant tomatoes in Adelaide this year?

On the plains, mid-October, or early October with protection. In the Hills, wait until your frost date passes. Plant as soon as you are clear so roots are down before the first 38C day.

Will El Niño affect Adelaide's water supply?

Low Murray inflows are expected, which puts pressure on Adelaide's mains supply. Set the garden up for minimal water use now with mulch, drip and a tank.

Is it worth building a wicking bed in Adelaide?

Yes. A wicking bed uses roughly half the water of a normal raised bed and is filled once a week. It is the best way to keep cucumber, salad greens and corn going through an Adelaide summer.