Professional Greenhouse Base Installation in Lyndhurst. Built for Drainage. Guaranteed 10 Years.

Lyndhurst's geology splits into two distinct zones. The higher plateau around Bolton's Bench and Emery Down sits on Barton Sand and plateau gravels — free-draining, acidic (typically pH 4.5-5.5), and relatively stable. Lower-lying areas towards Bank, Ashurst, and Bartley feature Barton Clay — heavier, poorly drained, and prone to seasonal shrink-swell movement. Many Forest gardens contain both soil types, with sandy upper slopes transitioning to clay in lower hollows. We test and assess every site to determine the precise ground conditions.

Sandy areas drain freely — almost too well in some cases, with water passing straight through. We ensure sub-bases are properly compacted to prevent settlement, and use geotextile membranes where sandy substrates risk washing out. Clay valleys around Ashurst and lower Bank require the opposite approach: integrated drainage falls, generous type 1 sub-bases, and sometimes perimeter French drains to manage standing water. The key is matching the drainage design to your specific Forest garden.

Lyndhurst benefits from significant natural shelter provided by the surrounding ancient woodland. The Forest canopy breaks wind effectively, though gaps and rides can funnel gusts. Properties on the open heathland above Bolton's Bench are more exposed than those nestled among trees in Minstead or Bank. We recommend positioning greenhouses in naturally sheltered spots, using existing outbuildings and hedging as additional windbreaks. The prevailing wind is south-westerly.

The New Forest creates distinctive frost patterns. Higher, exposed positions like Bolton's Bench can experience sharper frosts, while sheltered woodland clearings in Minstead and Swan Green trap cold air on still nights, creating frost pockets. The overall Forest microclimate is milder than open countryside, but local topography matters enormously. We advise positioning greenhouses on gentle south-facing slopes where cold air drains away naturally, and setting bases at heights that promote airflow beneath the structure.