How to grow lemon scented tea tree
Overview
Lemon scented tea tree (Leptospermum petersonii) is a fast-growing evergreen tree native to eastern Australia, prized for its citrus-scented foliage and small white flowers. It is grown as a specimen tree, hedge, or for edible leaf harvest. Key need: full sun and well-drained soil to avoid root rot.
Soil Preparation
Prefers sandy loam to loam soils with pH 5.5-6.5. Ensure excellent drainage; if soil is heavy, add gypsum or coarse sand. Incorporate well-rotted compost before planting to improve structure, but avoid high-phosphorus fertilisers which harm native plants.
Growing Guide
Plant in full sun with well-drained, slightly acidic soil. Space trees 2-3m apart. Dig a hole twice the width of the root ball and plant at the same depth. Water deeply after planting, then regularly for the first year until established. Avoid heavy clay soils; if drainage is poor, raise beds or amend with organic matter. Mulch around base to retain moisture but keep mulch away from trunk.
Sowing
Sow seeds in spring into seed-raising mix, barely covering with fine sand. Keep moist in a warm, well-lit spot. Germination takes 2-4 weeks. Transplant seedlings into pots when 5cm tall, then harden off before planting out after frost danger passes.
Care
Feed with a slow-release native fertiliser in early spring. Prune lightly after flowering to maintain shape and encourage bushiness; remove dead or crossing branches. In cooler zones, provide frost protection (e.g., shade cloth) during the first two winters.
Companion Planting
Pair with other aromatic natives like lavender, rosemary, and lemon myrtle to create a sensory garden. Avoid planting near water-hungry vegetables or lawns that may cause overwatering. Good near paths where the lemon scent can be enjoyed.
Common Pests & Risks
Scale insects can be controlled with horticultural oil or soap spray. Myrtle rust causes leaf spots and shoot distortion; prune infected parts and apply fungicide in humid weather. Monitor for psyllids which cause leaf blistering. Good air circulation reduces fungal issues.
Harvesting
Harvest leaves sparingly once the tree is at least 1m tall. Pick young, fresh leaves in the morning after dew dries for best flavour. Leaves can be used fresh or dried for tea. Never harvest more than 10% of foliage at one time to avoid stressing the tree.
In the Kitchen
Use fresh leaves to infuse hot water for a fragrant lemon tea. Dried leaves can be stored in an airtight jar for up to six months. Harvest responsibly: the tree is tough but overharvesting young growth can stunt development. Leaves also flavour syrups and desserts.
Troubleshooting
Yellowing leaves: often from overwatering or poor drainage; check soil moisture and improve drainage. Brown leaf tips: wind or salt burn; shelter from drying winds or rinse foliage. Leaf drop after frost: prune damaged wood in spring; tree usually recovers. Sparse growth: lack of sun or nutrients; move to sunnier spot or feed with native fertiliser. Myrtle rust: orange pustules on leaves; remove infected parts and apply copper fungicide.