Leylandcipres

× Cuprocyparis leylandii

Engels: Leyland Cypress

treeCupressaceaeWintergroen

Leylandcipres (× Cuprocyparis leylandii) is a evergreen tree from the Cupressaceae family that grows up to 6 meters tall. This plant thrives in full sun to partial shade and requires moderate maintenance. Attracts birds.

Hoogte

300–600 cm

Breedte

100–250 cm

Zonligging

full sun, partial shade

Waterbehoefte

moderate

Grondsoort

loam, clay soil, sandy soil, chalky soil

Onderhoud

moderate maintenance

Ecologische waarde

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Care tips

Planting

Leyland cypress thrives in full sun or partial shade and tolerates a wide range of soil types, including loam, clay, sand, and chalky soils. The key is good drainage; waterlogged ground will cause root problems. Plant container-grown specimens in March, April, May, September, or October, avoiding periods of frost or drought. Autumn planting is often ideal because the soil is still warm and rainfall helps establishment, but spring planting works well if you can water reliably through the first summer. Dig a hole roughly twice the width of the root ball but no deeper—the top of the root ball should sit level with the surrounding soil. Break up compacted soil at the base and sides of the hole to encourage roots to spread. If your soil is heavy clay, fork in some grit or coarse organic matter to improve drainage. For hedging, space plants 50 cm apart in a single row; closer spacing won't speed up hedge formation and makes maintenance harder. After planting, backfill with the excavated soil, firming gently with your heel to eliminate air pockets. Water thoroughly, even if the soil feels damp, to settle roots. Apply a 5–7 cm layer of mulch (chipped bark or well-rotted compost) around the base, keeping it a few centimetres clear of the trunk to prevent rot. Stake only if the site is very exposed; Leyland cypress establishes better with some natural movement. Water weekly for the first growing season if rainfall is scarce. Established trees are reasonably drought-tolerant but young plants need consistent moisture to develop a strong root system.

Pruning

Leyland cypress requires regular pruning to stay dense and manageable, especially when grown as a hedge. Prune in May, June, August, or September—avoid cutting in winter or early spring when growth is slow and wounds heal poorly. Never prune in hot, dry spells in July, as this stresses the tree and can cause browning. Use sharp hedging shears or a hedge trimmer for formal hedges. The golden rule is to trim little and often rather than cutting back hard once a year. Aim to remove no more than one-third of the current season's growth in each session. For a neat hedge, prune in late May or early June after the first flush of growth, then again in late August or early September to tidy up before winter. Always cut back to green, actively growing foliage; Leyland cypress will not regenerate from bare, brown wood, so never cut into old, leafless branches. Shape the hedge with a slight taper—narrower at the top than the base—so that light reaches the lower branches and prevents them from dying back. For specimen trees, remove any dead, damaged, or crossing branches in late spring. If a leader (main shoot) is damaged, tie in a strong side shoot to replace it. Once a hedge reaches your desired height, keep the top flat and level. If a Leyland cypress hedge becomes overgrown and bare at the base, there is no practical way to rejuvenate it; replacement is usually the only option. Prevention through regular, light pruning is essential.

Maintenance

Leyland cypress has moderate water needs. Water young trees weekly during dry spells in their first two years, especially from late spring through summer. Established specimens are more drought-tolerant but will brown and shed foliage if left too dry for prolonged periods. In hot summers, water hedges deeply every two to three weeks rather than little and often; this encourages deeper rooting. Feed in March or April with a balanced general-purpose fertiliser (such as Growmore or blood, fish, and bone) scattered around the base at the rate recommended on the packet. A spring feed supports vigorous growth and rich green foliage. Avoid feeding after mid-spring, as soft late-season growth is more vulnerable to frost and disease. Refresh the mulch layer each spring to suppress weeds, retain moisture, and gradually improve soil structure. Keep mulch clear of the trunk itself. Leyland cypress is evergreen, so there's no autumn leaf drop to clear, but you may need to remove fallen needles and pruning debris from the base to reduce the risk of fungal problems. Common pests include aphids and scale insects, which cause sooty mould on foliage; treat with an insecticidal soap if necessary. The main disease threat is cypress canker (Seiridium), which causes dieback of branches and browning foliage. There is no cure; remove affected branches promptly, cutting back to healthy wood, and disinfect tools between cuts. Canker spreads faster on stressed trees, so good watering, feeding, and avoiding hard pruning all reduce risk. In exposed or coastal sites, provide windbreak protection while plants establish.