Description
The Golden Leylandii (Cupressocyparis leylandii ‘Castlewellan Gold’) is a highly popular choice for creating vibrant evergreen hedging. Supplied at a strong height of 250–300cm, these plants offer an instant impact, with their dense golden-green foliage bringing both beauty and privacy to your garden.
Golden Leylandii thrives in a variety of soils, including normal, clay, and chalk, and is well suited to both full sun and partial shade. Its hardy nature makes it an excellent option for exposed or inland locations, providing year-round colour and shelter. With an average growth rate of 30–60cm per year, it quickly establishes into a reliable screen while remaining easy to maintain at a manageable height of 2–5 metres.
This fast-growing conifer is particularly valued for its versatility—whether you want to define boundaries, create windbreaks, or simply enjoy a lush evergreen backdrop. To achieve the best results, plant 1 per metre for a dense hedge, or increase to 2 per metre for rapid coverage.
Strong, resilient, and low maintenance, the Golden Leylandii is a practical and attractive solution for long-lasting garden structure and privacy.
How To Plant
Choose the right pot
Pick one 2–3× wider than the rootball with drainage holes. Add a saucer if it’s on a patio, but never let the pot sit in standing water.
Prep your mix (pots)
Use quality peat‑free multi‑purpose compost blended with roughly 20–30% grit or perlite for drainage. You can mix in a small handful of slow‑release fertiliser granules following the label.
Potting steps
Cover the drainage holes with crock or mesh, add a 3–5 cm base layer of compost mix, and gently tease the outer roots. Position the plant so the top of the rootball sits level with the pot rim, backfill and firm lightly to remove air pockets (don’t bury the stem), then water thoroughly until it runs from the base.
Positioning (both)
Choose a bright spot with a few hours of sun and shelter from strong, cold winds. For pots, raise the container on feet or small blocks to keep the base off the ground and prevent waterlogging.
Watering (both)
Keep the root zone evenly moist during the first season. Check moisture 3–5 cm down and water deeply when dry. In heatwaves expect to water every 1–3 days in pots and about two to three times per week in the ground; in winter, water far less but do not allow the rootball to become bone‑dry.
Feeding (both)
In spring, apply a slow‑release fertiliser as directed. From late spring to mid‑summer, an optional liquid feed every three to four weeks helps container plants perform at their best.
Pruning & shaping (both)
Lightly trim after the main flush of new growth to keep the plant dense and tidy. Remove dead, damaged, or crossing stems whenever you see them.
Mulching (both)
Apply a 2–3 cm mulch of compost or fine bark over the root zone to reduce evaporation and suppress weeds, keeping mulch a few centimetres away from the main stem.
Planting in the ground: site & soil
Choose sun to light shade and avoid spots that stay waterlogged. Improve heavy clay with grit and organic matter; for very sandy soil, add plenty of compost to hold moisture.
Planting in the ground: dig, prep, plant
Dig a hole roughly twice as wide as the rootball and only as deep. Roughen the sides and base, and prepare backfill from topsoil and well‑rotted compost at about 70/30 without strong fertiliser at planting. Soak the potted plant for 10–15 minutes, remove it, tease outer roots, and set the top of the rootball level with the surrounding soil. Backfill and firm in layers, form a shallow watering basin, water deeply with a full can or two, and finish with a 2–3 cm mulch that does not touch the stem.
Spacing & staking (ground)
Allow at least 1–1.5 m of space from walls, fences, or other shrubs for airflow and shape. Most shrubs do not need staking; in very windy sites use a short stake set at an angle with a soft tie during the first season only.
Aftercare (first year)
Water deeply once or twice per week in dry spells, aiming at the original rootball area. Top up mulch each spring and give a light shape once vigorous new growth is visible.
Winter care (UK)
For pots, raise on feet and, in severe frost, move near a wall or wrap the container with fleece or bubble wrap. In the ground, mulch before hard frosts and avoid waterlogging.
Quick troubleshooting
Yellowing leaves usually indicate overwatering or poor drainage; improve drainage and reduce watering. Brown, crispy edges suggest underwatering or wind scorch; water more deeply and add shelter. Leggy growth means the plant needs more light; move to a brighter spot and give a light trim after the main growth flush.
