Leyland Cypress Tree

Leyland Cypress is hardy in USDA zones 6 to 10 and performs best in full sun (at least six hours daily) in well-draining soil. It adapts to most soil types but will not tolerate constantly wet feet — good drainage is the single most important factor in keeping it healthy.

Planting

1. Choose a sunny, open site with room for a tree that matures at 40 to 60 feet tall and 10 to 15 feet wide. Keep it well away from foundations, septic lines, and overhead wires.
2. Make sure the spot drains freely. On heavy clay, plant slightly high or amend a wide area to improve drainage rather than digging a deep hole that holds water.
3. Dig the hole twice as wide as the root ball but no deeper than it is tall, so the tree rests on firm, undisturbed soil.
4. Set the tree so the root flare (where the trunk widens into roots) sits right at or just above grade. Never bury the flare or pile soil against the trunk.
5. Backfill with the native soil, firm it gently to remove air pockets, and water in deeply to settle the roots.
6. Mulch 2 to 3 inches over the root zone, pulling it back a few inches from the trunk. For a privacy hedge, space plants about 6 to 8 feet apart in a single row — resist crowding them closer, since tight spacing traps moisture and dramatically increases canker and dieback.

Care & maintenance

• Water. Water deeply and regularly through the first one to two growing seasons while roots establish. Because it is evergreen, give it a deep drink during dry spells in fall and early winter too, since dehydrated foliage browns and dies back.
• Feed. Feed lightly in early spring with a slow-release evergreen or conifer fertilizer. Established, vigorous trees often need little or no feeding.
• Light. Full sun keeps growth dense and foliage healthy. In too much shade, the interior thins and the screen grows loose and open.
• Prune. Shear only the soft green outer growth, ideally in late spring or early summer, to keep a tidy screen. Never cut back into bare, brown, leafless wood — like most needled conifers, Leyland Cypress will not regrow from old wood, and hard cuts leave permanent dead gaps. Trim lightly and often rather than hard and rarely, and you can keep it held at a chosen height.
• Spacing. For a hedge, hold to 6 to 8 feet apart. Good airflow between plants is your best defense against disease.
• Pests & disease. Watch for bagworms (handpick the spindle-shaped bags before they defoliate branches) and spider mites in hot, dry weather. The most serious threats are Seiridium and Botryosphaeria canker, which cause scattered branch dieback and are far worse on stressed, crowded, or drought-weakened trees. Prune out and dispose of dead branches, keep trees well-watered, and avoid overcrowding to limit problems.
• Winter care. In exposed sites, heavy snow and ice can splay or break branches; gently brush off heavy snow loads. Steady winter watering during dry spells prevents the foliage browning known as desiccation.

How far apart should I plant them for a privacy hedge?

Space Leyland Cypress about 6 to 8 feet apart in a single row for a fast, solid screen. It is tempting to plant them closer for quicker coverage, but crowding is the leading cause of canker disease and dieback in these trees. Giving each plant room and airflow produces a healthier, longer-lived hedge.

How fast does it grow and how soon will it fill in?

Leyland Cypress is one of the fastest-growing privacy evergreens, commonly adding 3 to 4 feet of height per year once established. At proper spacing, a young row typically forms a continuous screen within roughly three to five years, depending on starting size, soil, and water.

How tall and wide will it get?

Left unpruned it matures at about 40 to 60 feet tall and 10 to 15 feet wide. It can be sheared and held lower as a maintained hedge, but plan for its full footprint and keep it away from houses, fences, and overhead lines when you choose a planting spot.

Is it evergreen and does it stay green all winter?

Yes. Leyland Cypress keeps its soft, blue-green to deep-green foliage year-round, providing a consistent screen and windbreak through all four seasons. Some normal shedding of older interior foliage can occur, but the outer canopy stays green.

Is it deer resistant?

Leyland Cypress is generally one of the more deer-resistant screening conifers and is far less browsed than arborvitae. No plant is completely deer-proof, and hungry deer may sample new growth in winter, but it is a more reliable choice in high-deer areas.

Why is my Leyland Cypress turning brown?

Browning usually traces back to one of a few causes:

• Drought or winter desiccation: dry roots, especially in fall and winter, cause foliage to brown and die back — water deeply during dry spells.
• Canker disease: scattered, randomly dying branches often signal Seiridium or Botryosphaeria canker; prune out affected wood and reduce stress.
• Spider mites: hot, dry conditions can bring mites that fade and stipple the foliage.
• Poor drainage: soggy soil rots roots and browns the canopy from the bottom up.

Some inner-needle browning and shedding is normal seasonal renewal. Widespread or rapidly spreading brown points to drought, disease, or wet feet.