How to Grow Lavender from Cuttings
Propagating lavender from cuttings creates several genetically identical plants from one healthy mother plant. It preserves a chosen variety, produces useful-sized plants for pots and beds, and costs little beyond a pot, free-draining propagation mix and patience. It is often more reliable than seed, which can take a long time to germinate and may produce variable plants.
Australian timing matters because the country spans tropical, subtropical, Mediterranean, temperate and cool-climate regions. Sydney and Brisbane can be hot and humid through summer, Melbourne often has damp soil, cold wind and occasional frost, while Perth has dry heat and strict summer watering rules. Tasmanian and alpine gardens can remain cold well into spring. Choose a propagation window that matches your local weather rather than copying a Northern Hemisphere propagation calendar.
The method has three stages: take healthy stem cuttings, root them in a bright, sheltered place, then pot them on and acclimatise them before planting. Soft growth usually roots quickly, while slightly harder stems can develop stronger plants but take longer. In warm conditions, fresh cuttings may begin rooting within three to four weeks and can be ready to pot up within six to eight weeks.
Start with a potted plant from a specialist nursery or a healthy plant already growing nearby. Australian garden centres often sell lavender in small pots and punnets, while hardware stores such as Bunnings and Mitre 10 carry general-purpose potting mix, perlite and propagation containers. Labels may use broad names such as English lavender or French lavender, so check the botanical name when the exact cultivar or climate tolerance matters.
Why propagate lavender from cuttings
Cuttings give you new plants without disturbing the mother plant or dividing a mature clump. They also let you choose useful traits: a compact cultivar for a small pot, a strongly scented variety for drying, or a dependable plant for a sunny border. Each rooted cutting is a clone, so it will match the parent’s habit, flower colour and fragrance. That consistency makes lavender cuttings especially useful for rows, low hedging, paths and repeated pots.
Choose the type of lavender with your climate in mind. English lavender, usually Lavandula angustifolia, is a popular choice for its flower spikes, fragrance and cold tolerance. French lavender, Lavandula stoechas, has showy bracts and suits mild, warm areas, but it generally handles hard frost poorly. Spanish lavender and lavender hybrids can perform well in frost-free districts. Warm, humid locations need excellent airflow around the foliage, while cool gardens can usually grow a wider range of English-lavender cultivars.
A healthy mother plant can provide many cuttings over several years, and each rooted plant can become a source for more. This makes propagation economical for a new garden or large container display. It also lets you test lavender in a protected pot before planting it in a border. As flowers open, the plants attract bees and other pollinators, adding another reason to build a clump from cuttings.
Selecting a strong mother plant
Look for compact, upright growth and healthy grey-green leaves. Avoid stems with yellowing, rust, mildew, aphids or distorted new growth, and do not take cuttings from a stressed or recently repotted plant. Buying labelled stock helps because “true lavender” sold without a cultivar name may not match the plant you hoped to copy. A named plant from a reputable nursery gives you the strongest starting point.
Take cuttings from the current season’s growth rather than old, cracked or hollow woody stems. Softwood is tender and flexible; semi-hardwood is firmer, usually grey-brown at the base, and can tolerate more handling. Flowering stems are less useful because their energy is directed towards blooms, so select leafy side shoots and healthy stem tips. A cutting around 10 to 15 centimetres long usually has enough tissue to root and enough leaves to support the new plant.
Propagation time depends on where you live. In Melbourne, Tasmania and cooler inland districts, early spring gives new roots time to establish before winter. In Sydney, autumn often gives roots a mild, moist start, but cuttings must be protected from hot spells. Perth gardeners commonly propagate in autumn or early winter as temperatures ease, while Brisbane’s subtropical growth can continue for much of the year. Avoid taking cuttings during a heatwave, during heavy rain or when overnight frost is likely.
| Cutting type | Best time to take it | Stem characteristics | Rooting outlook |
|---|---|---|---|
| Softwood | Active spring growth | Flexible, green, leafy tips | Fastest rooting, but needs careful humidity control |
| Semi-hardwood | Late summer or autumn | Firmer stems with a slightly woody base | Slower, often stronger and more resilient |
| Old hardwood | Late autumn or winter | Thick, rigid, deeply woody | Unreliable and prone to rotting before rooting |
Taking and preparing the cuttings
Prepare sharp secateurs or a knife, labels, small pots and propagation mix before cutting. Wipe the blades with methylated spirit and let them dry, then water the mother plant the day before. Hydrated stems recover more readily than those cut from dry soil. Work in the morning or late afternoon, and keep prepared cuttings out of direct sun.
Make the main cut just below a leaf node, where leaf tissue joins the stem and new roots can form. Aim for one cutting per healthy shoot, 10 to 15 centimetres long. Use a clean blade to avoid crushing the stem, and discard any piece that is soft, diseased or badly damaged. If you are taking semi-hardwood cuttings in late summer, remove the spent flower spike and use the leafy growth beneath it.
Remove the leaves from the lower third of each cutting, leaving two to four leaves near the top. This prevents leaves from resting on damp mix while the buried stem can form roots. If the remaining leaves are large, trim them slightly to reduce moisture loss. A little rooting hormone containing IBA can improve the chance of success, especially with semi-hardwood, although healthy lavender often roots without it. Apply only to the cut base and tap away the loose excess.
Potting and rooting the cuttings
Use a clean, free-draining propagation mix rather than garden soil. A useful blend is two parts quality general-purpose potting mix, one part perlite and one part coarse sand or fine bark. The organic component holds enough moisture for root development, while the mineral components prevent the mix from collapsing into a wet plug. Fill small 50 to 75 millimetre pots or a propagation tray with drainage holes, then insert each cutting about two to three centimetres deep. Firm the mix around the stem so it stands upright, and water gently.
Place pots in bright, filtered light, protected from harsh midday sun. A clear, loosely fitted cover maintains humidity around cooler or drier cuttings, but must not trap stale, wet air. In Brisbane and coastal Sydney, skip the cover or ventilate frequently because an enclosed humid pot encourages grey mould and stem rot. In dry Perth, cover pots away from hot afternoon sun and check moisture often. A root zone around 15 to 22 degrees helps growth, but strong sun on a closed propagator can overheat it.
Keep the mix lightly moist, never saturated. Water when the surface feels dry and let surplus drain away. Frequent splashes leave the lower stem cold and anaerobic, encouraging root rot; infrequent deep watering wets the whole root zone. Check for new growth after a few weeks, but do not mistake a leaf for a root. From around week four, hold a cutting near the base and pull gently. Resistance means roots have formed; easy movement means it needs more time.
When roots reach roughly two to three centimetres, lift the cutting carefully and move it into a slightly larger pot of the same free-draining mix. Handle it by the leaves rather than the fragile stem. Keep the newly potted plant sheltered and gently moist while the root system establishes. Some cuttings may fail, and that is normal with plant propagation, so take several rather than placing all your hopes on one stem.
Moving rooted cuttings into the garden
After the second potting, prepare a rooted cutting for outdoor life. Increase exposure to outdoor conditions gradually over seven to ten days, starting with gentle morning sun and providing deeper shade during the hottest part of the day. Feed lightly with a low-nitrogen fertiliser or dilute balanced liquid feed once new growth is active. Rich feeding encourages floppy stems and foliage at the expense of flowers.
Choose a position with at least six hours of sun, good airflow and quick drainage. Lavender dislikes permanently wet soil, especially around its crown. On heavy clay, create a raised mound or raised bed rather than digging into ground that holds water. Improve sandy soil with modest compost, avoiding rich, moisture-retentive pockets that encourage root disease. Keep new cuttings close while they establish, then space them so air can circulate.
Water new plants when the upper layer of soil has begun to dry, then soak the root zone thoroughly. Established lavender prefers less frequent, deeper watering, but it still needs moisture during severe dry spells. A drip line is efficient in Perth and other water-limited districts, where summer restrictions can make hand watering less predictable. In wetter areas, watch drainage after heavy rain rather than adding more water. Mulch with grit or fine bark can keep mud off the foliage, but keep it away from the base of the stems.
As growth fills the pot, pinch young shoot tips to encourage a bushy shape. After flowering, trim the soft growth back by a third, but never cut deeply into bare old wood because it may not reshoot. Inspect regularly for aphids, whitefly, snails and spider mites, especially on stressed plants. Remove pests early and improve growing conditions before reaching for sprays. Fungal problems, particularly root rot, are usually a sign of wet soil, overcrowding or poor airflow rather than a need for stronger chemicals.
Start with one vigorous lavender and make a small propagation batch. Take several cuttings of the same variety, label each pot with the cultivar and date, and place them where you can check moisture and root development without daily disturbance. Steady care matters more than constant repotting.
Six healthy rooted cuttings are enough to begin: some for pots, some for a sunny border, and a spare for another location. Select a free-draining mix, provide bright indirect light, and resist harvesting leaves from the new plant while it establishes. Make the first cut this week and give each cutting its own pot.