Garden Guide

Garden Guide for Adelaide, South Australia

Adelaide has a Mediterranean climate with hot, dry summers and mild, wet winters. Climate Zone 11a means you can garden practically frost-free. Soils often vary from loamy to sandy and benefit from plenty of compost and organic matter.

In Adelaide, Climate Zone 11a, you can grow almost year-round thanks to the frost-free climate. For example, start your garden lettuce seeds indoors from August to January for a harvest from September to March. You can start tomatoes indoors from August to September and harvest them from December to March, while zucchini can be started indoors from September to October and harvested from December to March.

Zone 11a Frost-free Mediterranean

There is practically no frost in Adelaide. You can garden year-round, the calendar shows the most reliable growing windows.

Also applies to: Gawler, Mount Barker, Victor Harbor, Murray Bridge, Port Lincoln

Plan your Adelaide garden in the Fryd app

Planting Calendar

When to start indoors, sow outdoors, and harvest in Adelaide. Frost-free climate: the windows are a guide, many crops can be sown beyond them too.

Light Water Nutrients

Start indoors Sowing Harvest

Planting calendar for Adelaide, Zone 11a
Crop	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Tomato (Bush tomato) ●●● ●●○ ●●●
Tomato (Cocktail bush tomato) ●●● ●●○ ●●●
Pepper / Paprika ●●● ●●○ ●●●
Cucumber / Gherkin ●●● ●●○ ●●●
Courgette / Zucchini ●●● ●●● ●●●
Bean (Dwarf bean) ●●● ●●○ ●○○
Bean (Runner bean) ●●● ●●○ ●○○
Chili ●●● ●●○ ●●●
Basil ●●● ●●○ ●●●
Garlic ●●● ●●○ ●○○
Onion ●●● ●●○ ●●○
Onion (Spring onion) ●●● ●●○ ●●○
Aubergine / Eggplant ●●● ●●● ●●●
Lettuce (Lettuce) ●●○ ●●○ ●●○
Chard ●●○ ●●○ ●●○
Spinach (Summer) ●○○ ●●● ●●○
Sweet potato ●●● ●●○ ●●●
Strawberry ●●● ●●○ ●●●
Melon (Watermelon) ●●● ●●○ ●●●
Melon (Sugar melon) ●●● ●●● ●●●

Tomato (Bush tomato) ●●● ●●○ ●●●

Tomato (Cocktail bush tomato) ●●● ●●○ ●●●

Pepper / Paprika ●●● ●●○ ●●●

Cucumber / Gherkin ●●● ●●○ ●●●

Courgette / Zucchini ●●● ●●● ●●●

Bean (Dwarf bean) ●●● ●●○ ●○○

Bean (Runner bean) ●●● ●●○ ●○○

Chili ●●● ●●○ ●●●

Basil ●●● ●●○ ●●●

Garlic ●●● ●●○ ●○○

Onion ●●● ●●○ ●●○

Onion (Spring onion) ●●● ●●○ ●●○

Aubergine / Eggplant ●●● ●●● ●●●

Lettuce (Lettuce) ●●○ ●●○ ●●○

Chard ●●○ ●●○ ●●○

Spinach (Summer) ●○○ ●●● ●●○

Sweet potato ●●● ●●○ ●●●

Strawberry ●●● ●●○ ●●●

Melon (Watermelon) ●●● ●●○ ●●●

Melon (Sugar melon) ●●● ●●● ●●●

Planting Calendar Adelaide

Tomato (Bush tomato): Start indoors Aug - Sep, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Tomato (Cocktail bush tomato): Start indoors Aug - Sep, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Pepper / Paprika: Start indoors Jul - Aug, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Cucumber / Gherkin: Start indoors Sep - Oct, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Courgette / Zucchini: Start indoors Sep - Oct, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: high, Nutrients: high)
Bean (Dwarf bean): Start indoors Sep - Oct, Sowing Oct - Dec, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: low)
Bean (Runner bean): Start indoors Sep - Oct, Sowing Oct - Dec, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: low)
Chili: Start indoors Jun - Aug, Sowing Oct - Dec, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Basil: Start indoors Aug - Dec, Sowing Oct - Dec, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Garlic: Sowing Feb - Apr, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: low)
Onion: Start indoors Jun - Jul, Sowing Aug - Sep, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: medium)
Onion (Spring onion): Start indoors Jan - Dec, Sowing Feb - May, Harvest May - Sep (Light: high, Water: medium, Nutrients: medium)
Aubergine / Eggplant: Start indoors Aug - Oct, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: high, Nutrients: high)
Lettuce (Lettuce): Start indoors Jan - Dec, Sowing Jan - Dec, Harvest Jan - Dec (Light: medium, Water: medium, Nutrients: medium)
Chard: Start indoors Jun - Sep, Sowing Sep - Nov, Harvest Jan - Dec (Light: medium, Water: medium, Nutrients: medium)
Spinach (Summer): Sowing Aug - Oct, Harvest Sep - Dec (Light: low, Water: high, Nutrients: medium)
Sweet potato: Start indoors Sep - Oct, Sowing Oct - Nov, Harvest Feb - Mar (Light: high, Water: medium, Nutrients: high)
Strawberry: Start indoors Jul - Oct, Sowing Aug - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Melon (Watermelon): Start indoors Sep - Oct, Sowing Oct - Nov, Harvest Jan - Dec (Light: high, Water: medium, Nutrients: high)
Melon (Sugar melon): Start indoors Aug - Oct, Sowing Oct - Dec, Harvest Jan - Mar (Light: high, Water: high, Nutrients: high)

Based on Fryd planting data for Zone 11a, 2026.

Companion Planting for Adelaide

Plants that thrive together in South Australia.

Onion + Tomato (Bush tomato)

Onion + Tomato (Cocktail bush tomato)

Garlic + Pepper / Paprika

Cucumber / Gherkin + Pepper / Paprika

Lettuce (Lettuce) + Cucumber / Gherkin

Plan companions visually

Drag and drop crops in the Fryd bed planner to see companion matches.

Try Fryd →

Growing Tips for Adelaide

Choosing the Right Spot is Key

Many plants like onions, garlic, and basil love a full-sun, warm spot. Make sure your plants get enough light to thrive optimally and give you bountiful harvests.

Prepare Your Soil

Loose, humus-rich soil is the foundation for healthy plants. Before sowing or planting, work in plenty of compost to improve nutrient supply and water retention.

Water Regularly

Especially thirsty plants like spinach, cucumbers, and eggplants need very moist soil. Make sure to keep the soil consistently moist to avoid plant stress and ensure good yields.

Make the Most of Starting Indoors

Many warm-loving crops like tomatoes, melons, and zucchini benefit from starting them indoors. Begin starting your seeds in protected areas before transplanting the young plants outdoors to give them a good head start.

Common Pests & Diseases

•

Aphids on Lettuce and Spinach

Regularly check the undersides of leaves for aphids. If infested, you can rinse them off with a strong stream of water or use a neem oil solution to naturally combat the pests.

•

Snails and Slugs on Young Plants

Young lettuce and chard plants are especially vulnerable to snail and slug damage. Set out slug traps or sprinkle organic slug pellets to protect your seedlings and prevent feeding damage.

•

Spider Mites on Tomatoes and Cucumbers

In dry heat, spider mites can appear. Regularly spray plants with water to increase humidity, and if needed, use a soapy water solution for natural control.

•

Prevent Fungal Diseases

Ensure good ventilation and avoid waterlogging to prevent fungal diseases like powdery mildew. Remove affected leaves immediately and strengthen your plants with compost tea to boost their resistance.

Frequently Asked Questions

When should I plant tomatoes in Adelaide?

You can start tomatoes indoors from August to September and expect a harvest from December to March. Choose a sunny, warm, and sheltered spot for the best results and bountiful yields.

What climate zone is Adelaide?

Adelaide is in Climate Zone 11a, which means you enjoy a practically frost-free climate. This allows for a very long growing season for many crops and a wide variety of plants.

What grows well in Adelaide?

Many crops thrive wonderfully, including garden lettuce, strawberries, zucchini, and tomatoes. Warm-loving plants like eggplants, capsicums, and melons are also well-suited and provide good harvests.

Is there frost in Adelaide?

No, Adelaide is practically frost-free, which allows for year-round cultivation of many vegetable and fruit varieties. You don't have to worry about late frosts and can plant flexibly.