Lavender — How to Grow Lavender in Australia

☀️ Sun

Full Sun

💧 Water

Low

↔ Spacing

60cm apart

↕ Height

Up to 90cm

📅 Harvest

180 days

Growing Guide

Lavender thrives with a straightforward care routine suited to Australian growing conditions.

**Planting Time:** The best time to plant lavender in Australia is autumn (March–May) or spring (September–November), when temperatures are mild and roots can establish before extreme heat or cold. In cooler climates, spring planting is preferred.

**Soil Preparation:** Lavender demands excellent drainage above all else. Amend heavy clay soils generously with coarse sand, grit, and organic matter before planting. Raise garden beds if necessary. Lavender prefers a slightly alkaline to neutral pH of 6.5–7.5; add agricultural lime to acidic soils.

**Planting:** Dig a hole twice the width of the root ball. Set the plant at the same depth as its nursery container. Space plants 60–90 cm apart for hedging or mass planting.

**Watering:** Water deeply but infrequently once established. New plants need regular watering for the first 6–8 weeks. Mature plants require watering only during prolonged dry spells. Overwatering is the most common cause of failure — always allow the soil to dry between waterings.

**Feeding:** Feed lightly in early spring with a low-phosphorus fertiliser. Avoid high-nitrogen products, which promote leafy growth at the expense of flowers.

**Harvesting:** Cut flower spikes when approximately one-third of the buds are open for the best fragrance. Harvest in the morning after dew has dried for optimal essential oil content.

🤝 Good Companions

Lavender pairs beautifully with rosemary salvia and catmint as all share similar drought-tolerant free-draining requirements and together create a pollinator-rich fragrant garden bed. Roses also benefit greatly from lavender's proximity as its strong scent confuses and deters aphids while attracting beneficial predatory insects.

❌ Avoid Planting With

Avoid planting lavender near moisture-loving plants such as camellias azaleas or ferns as their conflicting water and soil needs will cause one or both plants to struggle. Mint should also be kept well away as it spreads aggressively and competes for space while preferring consistently moist conditions that will rot lavender roots.

🐛 Pests & Diseases

Lavender is remarkably pest-resistant in Australian gardens, though aphids may occasionally cluster on new growth and can be controlled with a strong jet of water or an organic neem oil spray. The most serious threat is root rot caused by Phytophthora fungi, almost always triggered by waterlogged soils — prevention through excellent drainage and avoiding overwatering is the most effective control. Lavender shab, a fungal disease causing sudden dieback, can occur in humid conditions; remove and dispose of affected stems promptly and improve air circulation by pruning.

🌱 Fertilising

Feed lavender once in early spring with a slow-release, low-phosphorus fertiliser such as a native or Mediterranean blend to support flowering without excessive leafy growth. A light top-dressing of compost or a diluted liquid seaweed solution in early autumn helps strengthen roots heading into winter without stimulating soft, frost-vulnerable new growth.

✂️ Pruning & Training

Prune lavender twice yearly — once lightly after the first flush of flowering in early summer to encourage a second flush, then more firmly in late summer or early autumn, cutting back by up to one-third to maintain a tight, mounding shape and prevent woody, open-centred plants. Never cut back into old, grey, leafless wood, as lavender will not regenerate from bare stems; always ensure some green foliage remains on every pruned stem.

🔬 Propagation

Lavender is most reliably propagated from semi-hardwood cuttings taken in late summer to early autumn — select 8–10 cm non-flowering shoots, strip the lower leaves, dip in rooting hormone, and insert into a free-draining propagating mix of perlite and coarse sand. Seeds are possible but slow and variable in quality, so cuttings are strongly preferred for maintaining true-to-type plants with consistent fragrance and flower colour.

🗓 When to Plant

Spring Summer Autumn Winter

🌾 Harvest

Spring Summer

🌏 Australian Climates

Mediterranean Temperate Cool Temperate Arid

More Ornamentals

Camellia → Hydrangea → Rose → Agapanthus → Dahlia →