El Niño in Sydney: What to Plant This Spring
Updated September 2026
Sydney, the Central Coast, Illawarra, the Blue Mountains fringe and the Hunter. Westerlies, early heat and a dam that drops fast.
Sydney springs are already unpredictable. Add El Niño and you get hot dry westerlies in September, 35C days before the tomatoes are established, and fire weather in the Blue Mountains and Hawkesbury by October. Warragamba can drop from full to restrictions in a couple of dry seasons. This is the year to plant a Mediterranean garden and set up water before you need it.
What to plant in Sydney & Coastal NSW this spring
Plant with confidence
- Tomatoes, early. Cherry and heat-set varieties in now on the coast. Beefsteaks only with shade cloth on standby.
- Beans (climbing and dwarf). Sow direct once soil is warm. Quick and productive.
- Zucchini. One or two plants, deep watered. Thirsty but fast.
- Eggplant, capsicum, chilli. Plant out from mid-September. They peak in the heat.
- Pumpkin and rockmelon. Big leaves shade the soil; water the base only.
- Silverbeet and rainbow chard. The leafy green that handles Sydney summer.
- Sweet potato. Runners in October for a March harvest.
- Rosemary, thyme, oregano, sage. Perennial herbs that want a dry spring.
Hold back or plant small
- Lettuce and coriander. Bolt with the first westerly. Shade and small batches, or wait for March.
- Broccoli, cauliflower, cabbage. Spring brassicas fail in early heat and get hammered by cabbage moth. Wait for autumn.
- Celery and English spinach. Need cool nights and constant moisture.
- Sweet corn. Big drinker. Only with a wicking bed or a tank you trust.
- Cucumber. Bitter under stress. Wicking bed or skip.
- New fruit trees. Plant in autumn, not now.
The full month-by-month list for your area is on the Sydney & Coastal NSW planting calendar, and the app's Plant Now shelf filters it to this month automatically.
Timing this year
Coastal Sydney is frost-free, so plant heat-lovers in September rather than waiting for the traditional Melbourne Cup date. Out west and up the mountains, check your postcode in the frost and heat lookup first; Richmond and Penrith still see September frosts. Plant in the evening, water the hole first, and shade transplants for three or four days. Hold salad and brassicas for a late-February sowing.
Water: the local picture
Sydney's dam levels are the thing to watch. Restrictions come in at set percentages, and a dry spring on top of a dry winter gets there quicker than most people expect. Set the garden up now for a summer where the hose is rationed: 75mm of mulch, drip line underneath on a timer, and a wicking bed for the thirsty crops. A tank on the shed or garage catches the storms when they do come. Sydney's sandy coastal soils and heavy clay in the west both benefit from compost dug in before planting; it is the cheapest water storage you can buy. Write your priority order now: fruit trees and perennials first, then fruiting crops, then everything else.
Heat and fire
Hot westerlies are the Sydney problem. They arrive with low humidity and strip moisture from leaves faster than roots can replace it. Water deeply the evening before a forecast hot day, and have shade cloth ready to throw over tomatoes and capsicum. Move pots to the east side of the house. For fire, the Blue Mountains, Hornsby, the Hawkesbury, Sutherland and the Northern Beaches all back onto bush. The NSW RFS bushfire danger period starts 1 October in most of the Sydney basin; get gutters, litter and your fire plan sorted in September.
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 Sydney & Coastal NSW
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
Will Sydney have water restrictions this summer?
Restrictions depend on dam levels and are more likely after a dry spring. Set the garden up now with mulch, drip irrigation and a wicking bed so restrictions do not catch you out.
When should I plant tomatoes in Sydney this year?
On the coast, September. Get cherry and heat-set varieties in early so they are established before the first 35C run. In the west and mountains, check your frost date first; it can still bite in September.
What can I grow in Sydney that does not need much water?
Chilli, capsicum, eggplant, sweet potato, pumpkin, beans, silverbeet, warrigal greens and Mediterranean herbs. Under deep mulch and drip line they need a soak twice a week at most.
When does bushfire season start in Sydney?
The statutory Bush Fire Danger Period begins 1 October across most of the Sydney basin, and El Niño years often see fire weather before that. Prepare in September.