Drastic Leyland Cypress Height Reduction: Not Feasible

Owner wants to reduce 20-year-old, 12-meter Leylands to 3-meter hedge.

Physiological Limitation

• Conifers don't sprout from old wood (brown, bare trunks)
• No dormant buds on mature bark
• Result: Bare trunks with foliage only at top

Outcome Prediction

Topping at 3 meters leaves 9 meters of bare trunk. No regrowth on lower stems. Tree becomes a "lollipop" or dies from stress.

Alternative

Remove and replant with species that tolerate hedge shearing: Thuja 'Green Giant', Taxus, Ilex, or Carpinus (hornbeam).