Chives, Spring Onions, and Garlic Chives in Australia

Chives, Spring Onions, and Garlic Chives

The allium family of herbs provides year-round harvests with minimal care in Australian gardens. Chives, garlic chives, and spring onions are among the most useful and underappreciated kitchen garden plants — this guide covers all three.

Why This Matters for Australian Gardeners

Australian growing conditions are unique — ancient soils, extreme seasons, and climate zones ranging from tropical Queensland to cool-temperate Tasmania. This guide is written specifically for Australian gardens, with advice calibrated to your conditions.

Getting Started

The most important thing is to begin. Every experienced Australian gardener started exactly where you are now — with enthusiasm, a patch of ground, and a willingness to learn from both successes and failures. This guide gives you the foundation to succeed faster.

Practical Application

Theory without practice is just words. Throughout this guide we focus on what you can do today, this week, and this season to see real results in your garden. Bookmark this page and return as your garden grows.

Planting and Growing Your Alliums Year-Round

The beauty of chives, spring onions, and garlic chives is their ability to produce harvests across all Australian seasons. Understanding when to plant and how to manage them through your local climate is essential for consistent supply.

Spring (September to November)

Spring is the ideal planting season for most Australian regions. Soil temperatures are warming, daylight is increasing, and moisture is generally adequate. Plant chives and spring onions in early spring for robust growth through summer. Garlic chives, being slightly more cold-sensitive, should wait until mid-spring when frosts have passed in southern regions.

These plants germinate readily in spring conditions and establish strong root systems before the heat of summer arrives. Space chives 15–20 cm apart, spring onions 10 cm apart, and garlic chives 20–25 cm apart. Water regularly but avoid waterlogging, which causes rot in Australian clay soils.

Summer (December to February)

Summer is when established plants thrive in most Australian gardens, though coastal and tropical regions may experience stress from extreme heat. In hot inland areas, provide afternoon shade cloth and consistent moisture. Mulch around plants with 3–5 cm of organic matter to regulate soil temperature and retain water.

Summer is your main harvesting season. Harvest frequently — the more you cut, the more the plants branch out and produce. Never remove more than one-third of the plant at once, as this stresses it and slows regrowth.

In tropical and subtropical regions, chives may slow or bolt in extreme heat. Garlic chives handle heat better and continue producing when standard chives struggle. This makes garlic chives an excellent choice for northern gardeners.

Autumn (March to May)

Autumn is a second peak season for chives and spring onions in most Australian regions. Cooler temperatures and autumn rains create ideal growing conditions. This is an excellent time to plant new crops or propagate existing ones by division.

Continue harvesting through autumn. Plants are vigorous and recover quickly from cutting. In southern regions, autumn planting ensures a winter harvest, making this season particularly valuable for extending your supply.

Winter (June to August)

Winter growth varies dramatically across Australia. In cool-temperate Tasmania and Victoria, growth slows significantly, though plants rarely die if established. In temperate NSW and southern Queensland, plants continue producing at reduced rates. Further north, chives and spring onions grow steadily through mild winters.

In freezing regions, protect plants with row covers or cloches if temperatures drop below –5°C. Garlic chives are more frost-tolerant than standard chives and often produce through southern winters. Stop harvesting severely during winter to allow plants to rest — gentle harvesting is fine, but avoid cutting hard.

Soil Preparation and Fertilising for Australian Conditions

Australian soils present unique challenges. Ancient, weathered soils are often nutrient-poor and lack organic matter. The allium family tolerates poor soils better than most vegetables, but they still perform better with preparation.

Preparing Your Soil

Before planting, work in 5–8 cm of well-aged compost or composted animal manure. This improves structure, water-holding capacity, and nutrient availability. In heavy clay soils common in eastern Australia, compost also improves drainage.

These plants prefer soil pH between 6.0 and 7.0. If your soil is very acidic (common in coastal regions), add dolomitic lime a month before planting. If it's alkaline (some inland areas), no adjustment is needed — alliums tolerate alkaline soils well.

In sandy soils, add extra compost and consider mixing in coconut coir, which holds moisture better than peat in Australian conditions.

Ongoing Fertiliser Requirements

Chives, spring onions, and garlic chives are light feeders compared to tomatoes or brassicas. A balanced, slow-release organic fertiliser applied at planting time is usually sufficient. Apply half-strength seaweed extract every 4–6 weeks during the growing season for a gentle nutrient boost and improved resilience to pests.

In southern Australia, apply fertiliser in spring and again in mid-autumn. In warmer zones, you can fertilise three times: spring, summer, and autumn. Avoid heavy nitrogen fertilisers, which produce soft growth prone to pests and disease.

If leaves yellowing, it indicates nitrogen deficiency. Apply compost or seaweed extract. In severely depleted soils, this may appear within 6–8 weeks of planting.

Common Problems, Prevention, and Troubleshooting

Pest Issues

Thrips and spider mites: These tiny pests are common in Australian gardens, especially in dry conditions. Spray affected plants with neem oil or insecticidal soap every 7–10 days. Improve air circulation by thinning overcrowded plants. Regular watering and mulching reduce spider mite problems by maintaining humidity.

Onion flies: These insects lay eggs at the base of plants; larvae tunnel into bulbs and stems. Cover young plants with fine mesh netting until established. Remove and destroy affected plants immediately. Rotate planting location annually.

Snails and slugs: Particularly problematic in cool, moist regions. Hand-pick in early morning or late evening. Mulch with coarse materials like crushed eggshells or diatomaceous earth to deter them. Beer traps buried in soil attract and drown slugs effectively.

Disease Prevention

Powdery mildew: Appears as white coating on leaves in warm, humid conditions. Improve air circulation, avoid overhead watering, and spray with sulphur dust (organic-approved) if severe. Garlic chives are more susceptible than standard chives.

Root rot: Caused by waterlogging in heavy soils. Ensure excellent drainage, don't overwater, and use raised beds if your garden floods. Once established, root rot is usually fatal — remove affected plants and improve drainage before replanting.

Rust: Rust spots occasionally appear on chive leaves in cool, damp conditions. Remove affected leaves, improve air circulation, and avoid wetting foliage. Usually resolves as weather improves.

Frequently Asked Questions

Can I grow these indoors? Yes, all three thrive in pots on sunny windowsills or under grow lights. Keep soil consistently moist but not waterlogged. Harvest gently and less frequently than outdoor plants.

Why are my spring onions bolting? Bolting occurs when plants experience temperature stress or day length changes. Garlic chives bolt more readily than chives. Harvest regularly and remove flower buds as they appear if you want to extend the leafy stage.

How long do these plants live? All three are perennial and can produce for 3–5 years or longer with proper care. Divide plants every 2–3 years to rejuvenate them.

Can I save seed? Allow flowers to bloom and set seed. Collect seed heads when they turn brown and dry. Garlic chives self-seed readily in gardens; remove excess seedlings to prevent takeover.