How to Grow Tomato in Australia

Tomatoes are warm-season crops that demand at least six hours of direct sun and deep, rich soil. In Australian raised beds, start seeds indoors 6–8 weeks before your last frost date, or buy seedlings from your local nursery in spring. Choose varieties suited to your climate — in subtropical Queensland, heat-tolerant varieties like 'Tommy Toe', 'Yellow Pear', or 'Apollo' perform best; in cooler Victorian gardens, 'Grosse Lisse' and 'Rouge de Marmande' thrive.

Prepare your raised bed with plenty of compost — at least one-third compost by volume. Tomatoes are heavy feeders and will exhaust poor soil quickly. Plant seedlings deep, burying the stem up to the lowest leaves; roots will form along the buried stem, creating a stronger, more drought-resilient plant.

Install a sturdy stake or tomato cage at planting time to avoid disturbing roots later. Indeterminate (vining) varieties like 'Grosse Lisse' need 1.5–1.8m stakes; determinate bush varieties can be supported with a 90cm stake or cage.

Water consistently and deeply — irregular watering causes blossom end rot and fruit cracking. Apply a thick layer of sugar cane mulch to retain moisture and keep soil temperature stable. Feed every two weeks with a balanced liquid fertiliser once flowering begins, then switch to a low-nitrogen, high-potassium fertiliser as fruit sets to encourage ripening rather than leaf growth.

Pinch out lateral shoots (suckers) on indeterminate varieties to keep the plant focused on fruit production. In hot Australian summers, provide some afternoon shade with 30% shade cloth if temperatures regularly exceed 38°C, as heat stress can cause flower drop.