How-To Guide

How to Improve Poor Drainage in Your Garden

July 2025·5 min read

Poor garden drainage is one of the most common problems we solve across Hampshire, Dorset and Wiltshire. Whether it is a lawn that stays waterlogged all winter, a border where plants rot at the roots, or paths that turn into streams in heavy rain, there is almost always a practical solution that will transform the usability of the garden.

Quick Wins for Mild Drainage Problems

For gardens with mild drainage issues — soil that is slow to drain but not permanently waterlogged — these improvements can make a significant difference without major excavation work.

  • Spike the lawn with a garden fork or hollow-tine aerator
  • Top dress the lawn with a sandy loam or fine grit mix
  • Dig organic matter and grit into borders to open up clay
  • Create raised beds to lift plant roots above the wet zone
  • Ensure paths slope away from the house at a minimum 1:60 fall

French Drains

A French drain — a gravel-filled trench containing a perforated pipe — is the most versatile drainage solution for garden use. It intercepts surface and near-surface water and directs it to a soakaway or drainage outlet. Installation typically costs from £800–£2,500 depending on length and complexity in Hampshire.

Soakaways

A soakaway is an underground pit filled with coarse rubble or purpose-made plastic crates into which drainage water is directed. They work well where the subsoil has adequate infiltration capacity. Not suitable in areas with very high water tables or impermeable chalk immediately below the surface.

A&T Landscapes installs all types of garden drainage systems across Hampshire, Dorset and Wiltshire. Call 07735 916029 for a drainage assessment and free quote.