Leighton Green is a fast-growing, evergreen conifer hedge plant, a cultivar of the Leyland cypress, that suits large Sydney gardens needing a dense privacy screen in full sun. It is an exotic hybrid, not a native, and the biggest mistake is planting it too close to a boundary or house, where it outgrows the space.
This guide covers this popular conifer, how to plant and space it, how to keep it trimmed and when to call a professional.
Key points
- Mature size is large, so check the nursery label before you buy (indicative — sizes vary with conditions and trimming).
- Leighton Green needs full sun and free-draining soil, and it struggles in waterlogged clay or deep shade.
- It needs regular trimming, and cutting back into bare brown wood usually will not regrow, so trim little and often.
- Hedge trimming in Sydney typically costs about $69 to $205 per job, with a typical price around $115 (October 2026).
Leighton Green at a glance
This conifer is popular because it grows quickly and forms a solid wall of foliage. Here is the quick profile.
| Feature | What to expect | Why it matters |
|---|---|---|
| Botanical name | Cupressocyparis leylandii ‘Leighton Green’ (also written as x Cuprocyparis leylandii) | Use the full name when you shop, because other Leyland cypress cultivars look similar. |
| Type | Evergreen conifer with flat, feathery foliage | It gives year-round screening, including in winter. |
| Native? | No, a hybrid of two North American cypress species | It suits formal screens, not native bushland plantings. |
| Mature size | Tall and wide (indicative — check the nursery label) | It can overpower small blocks and shade neighbours. |
| Sun | Full sun to part shade | Dense shade thins the lower branches. |
| Soil | Free-draining; tolerates a range of soils | Wet clay in western Sydney can cause root problems. |
| Growth rate | Fast (indicative — check the nursery label) | You will need to trim regularly. |
| Frost | Generally hardy once established | Young plants still benefit from shelter in cold western suburbs. |
Leighton Green varieties and similar conifers
People often search for leighton greens, leightons green hedge or the leightons green conifer when they mean this cultivar. Here is how it compares with related plants.
| Plant | Size (indicative) | Best use | Notes |
|---|---|---|---|
| Leighton Green | Large | Tall privacy screen on acreage or large blocks | Bright green foliage and fast growth. |
| Other Leyland cypress cultivars | Large | Screens in rural and larger gardens | Foliage colour varies, so check the tag. |
| Lilly pilly hedge | Medium to large | Native-style screen with glossy leaves | Psyllid can damage new growth in humid summers. |
| Murraya hedge | Medium | Scented, formal hedge | Fast growing and easy to clip. |
| Lilly pilly Resilience | Medium | Tough hedge in humid areas | Bred to resist psyllid. |
| Rhaphiolepis Snow Maiden | Small to medium | Low flowering hedge | Good for smaller beds. |
Where to plant Leighton Green in Sydney
- Choose a sunny site with free-draining soil, and avoid low spots where winter rain collects around the roots.
- Keep the hedge well back from house walls, pipes, paving and the boundary, because mature plants are large and wide.
- Plant on a mound in heavy clay suburbs such as Blacktown or Penrith, so water drains away from the base.
- Avoid sites under power lines, as tall growth will need pruning by a qualified arborist.
- Think about shading your neighbour’s garden or solar panels, and talk to them before planting a tall screen.
- Check your council’s rules for boundary hedges and tree heights before you plant (indicative — rules vary by council).
Leighton Green hedge spacing
Spacing decides how quickly the hedge closes up and how healthy it stays. Our hedges guide compares spacing for other plants.
- Follow the nursery label for the right spacing at your pot size (indicative — spacing varies by supplier and plant size).
- Planting closer gives faster screening, but crowded plants compete and may thin at the base.
- Planting wider gives healthier plants, but gaps stay open for longer.
- Stagger a double row only on very large blocks where you need a deep screen.
- Leave a maintenance gap along the back so you or a gardener can reach every side.
- Measure from the centre of each plant, and mark the line with string before you dig.
How to plant Leighton Green
- Water the plants in their pots, and lay them out along a string line at your chosen spacing.
- Dig each hole wider than the pot and no deeper than the root ball, so the crown sits level with the soil.
- Loosen circling roots gently, but avoid breaking the root ball apart on conifers, which dislike root disturbance.
- Place each plant upright and backfill with the soil you removed, firming it lightly with your hands.
- Water slowly to settle the soil, using a hose with a trigger nozzle before 10 am or after 4 pm.
- Mulch with organic mulch, keeping it clear of the trunk to prevent rot.
- Water young plants regularly through their first summer, then taper off as roots establish (indicative — check the plant label).
Caring for Leighton Green
| Task | When | How |
|---|---|---|
| Watering | Spring to autumn | Water deeply in dry spells, following Sydney Water’s Water Wise Guidelines. |
| Feeding | Spring | Use a slow-release fertiliser for evergreens and follow the label exactly. |
| Mulching | Autumn or spring | Spread organic mulch, keeping it away from stems. |
| Trimming | Spring to early autumn | Trim lightly and often to keep the shape, and stay in the green foliage. |
| Dead wood watch | All year | Remove dead branches by hand and check for browning that suggests stress. |
| Pest watch | All year | If you see webbing, grubs or sudden dieback, book a licensed pest controller rather than guessing. |
Pruning a Leighton Green hedge
- Trim in spring and again in early autumn, when the plant is growing and can cover cuts with fresh foliage.
- Cut only the green, leafy tips, because conifers rarely resprout from bare brown wood inside the hedge.
- Shape the hedge slightly narrower at the top than the base so sunlight reaches the lower branches.
- Use sharp, clean shears or a hedge trimmer, and wear gloves and eye protection because the foliage can irritate skin.
- Follow NSW noise rules when using powered tools: not before 7 am or after 8 pm on weekdays and Saturdays, and not before 8 am on Sundays and public holidays.
- Leave tall hedges, ladder work and branches near power lines to a qualified arborist.
Common Leighton Green problems
| Symptom | Likely cause | Fix |
|---|---|---|
| Brown patches inside | Shading from dense foliage or heavy trimming | Thin lightly, improve airflow and avoid cutting into bare wood. |
| Yellowing foliage | Wet feet or poor drainage | Improve drainage, reduce watering and mulch properly. |
| Sudden dieback | Root disease, drought stress or pests | Have an arborist or pest controller inspect it. |
| Thin lower branches | Too much shade at the base | Trim the hedge narrower at the top so light reaches below. |
| Leaning plants | Shallow roots or wind | Stake young plants and check the soil is firm. |
| Hedge too tall | Neglected trimming | Reduce height gradually or book a professional for staged cutting. |
When to call a gardener or arborist
- The hedge is taller than you can safely reach from the ground, so book a qualified arborist rather than using a ladder.
- Branches sit close to power lines, which is work for licensed professionals only.
- Your council requires approval to prune or remove large trees or hedges on your block.
- The hedge is overgrown and needs staged renovation over several seasons.
- You see pests, dieback or root problems and want a licensed pest controller to inspect them.
- You want a regular gardener to trim the hedge and remove the green waste.
Hedge trimming cost in Sydney
| Job | Low | Typical | High |
|---|---|---|---|
| Small hedge trimming (per job) | $69 | $115 | $205 |
| Sydney gardener (per hour) | $52 | $75 | $115 |
All prices include GST and reflect October 2026 Sydney rates. Large or tall hedges cost more.
FAQ: Leighton Green questions
What is a Leighton Green conifer?
It is a cultivar of the Leyland cypress, a fast-growing evergreen conifer with flat, feathery foliage. It is an exotic hybrid, popular for privacy hedges on large blocks. Check the nursery label for its mature size before you plant.
How far apart should you plant a Leighton Green hedge?
Follow the nursery label for the hedge spacing at your pot size (indicative — spacing varies by supplier). Closer planting screens faster, but crowds the roots. Wider spacing grows healthier plants. Leave room to reach the back of the hedge for trimming.
How fast does this conifer grow?
These conifers are fast growers, but the exact rate depends on your soil, water, sun and trimming (indicative — check the nursery label). Regular light trimming keeps the hedge dense and stops it racing past the height you want.
Can you cut a Leighton Green back hard?
Usually not. Conifers often will not regrow from bare brown wood, so trim only the green foliage, a little at a time. If your hedge is overgrown, ask an arborist about staged reduction rather than a single drastic cut.
Getting hedge help in Sydney
If your hedge has outgrown a safe reach, we can trim it back in stages and take the green waste away. See our hedge trimming service in Sydney, or compare options in the hedges guide. For a neater alternative, see the lilly pilly Straight and Narrow and Geisha Girl plant guides.
