Garlic Chives — How to Grow Garlic Chives in Australia

☀️ Sun

Full Sun

💧 Water

Medium

↔ Spacing

20cm apart

↕ Height

Up to 40cm

📅 Harvest

60 days

Growing Guide

Garlic chives are best planted in spring (September to November) or autumn (March to May) across most Australian climate zones, avoiding the harshest summer heat in subtropical regions. In Mediterranean and temperate areas, autumn planting establishes strong root systems before winter. Begin by preparing a well-draining bed enriched with aged compost or well-rotted manure dug in to a depth of 20 cm. Garlic chives prefer a slightly acidic to neutral soil pH of 6.0–7.0. Choose a position receiving full sun for the best flavour and growth, though they tolerate partial shade. Water consistently to maintain medium moisture levels — roughly two to three times per week during warmer months and once weekly in cooler periods. Allow the soil surface to dry slightly between waterings to prevent root rot. Feed every four to six weeks during active growth with a balanced liquid fertiliser or side-dress with compost. Once plants are established (approximately eight to ten weeks after planting), begin harvesting leaves by cutting them with clean scissors about 2–3 cm above the soil line, leaving enough foliage for the plant to regenerate. Regular harvesting encourages fresh, tender new growth. Deadhead spent flowers to prevent excessive self-seeding, unless you wish to collect seed or allow naturalising. Divide clumps every two to three years to maintain vigour and productivity.

🤝 Good Companions

Garlic chives grow beautifully alongside tomatoes roses carrots and capsicums as their natural sulphur compounds help deter aphids spider mites and Japanese beetles while attracting beneficial pollinators to improve fruit set. Their scent also confuses pests that target carrots making them a classic and practical companion throughout the Australian veggie garden.

❌ Avoid Planting With

Avoid planting garlic chives near beans peas or other legumes as allium compounds can inhibit their growth and reduce overall yields. Sage is also best kept at a distance as the two herbs can compete for similar nutrients and potentially suppress each other when grown in close proximity.

🐛 Pests & Diseases

Garlic chives are remarkably resilient but can occasionally be troubled by onion thrips, aphids, and fungal leaf diseases such as downy mildew in humid subtropical conditions. Combat thrips and aphids with regular applications of neem oil spray or a homemade garlic and chilli solution, ensuring good air circulation between plants to reduce fungal risk. Remove any yellowing or affected foliage promptly and avoid overhead watering during humid periods to minimise disease pressure organically.

🌱 Fertilising

Apply a balanced slow-release fertiliser such as a 5:6:6 NPK blend at the start of spring and again in early autumn to support robust leafy growth across Australian seasons. Supplement with a liquid seaweed or fish emulsion fertiliser every four to six weeks during the active growing season to boost trace minerals and overall plant vitality.

✂️ Pruning & Training

Cut foliage back to approximately 5 cm above the soil level two to three times per year to stimulate a fresh flush of tender, flavoursome new leaves and prevent the clump from becoming woody or congested. Promptly remove flowering stems after blooms fade unless saving seed, as this redirects the plant's energy back into productive leaf growth and reduces unwanted self-seeding around the garden.

🔬 Propagation

Garlic chives are easily propagated by dividing established clumps every two to three years in spring or autumn — simply lift the clump, separate into smaller sections of five to ten bulblets, and replant at 20–25 cm spacings for rapid re-establishment. They can also be grown readily from fresh seed sown directly into prepared garden beds or seed trays in spring, with germination typically occurring within ten to fourteen days under warm Australian conditions.

🗓 When to Plant

Spring Summer Autumn Winter

🌾 Harvest

All

🌏 Australian Climates

Subtropical Temperate Cool Temperate Mediterranean

More Herbs

Rosemary → Ginger → Turmeric → Chives → Lavender → Mint →