Garden & Outdoors guide

Improve clay soil drainage

Make heavy, sticky clay soil easier to work and less waterlogged by adding organic matter, avoiding compaction and using raised beds or drains where needed.

Estimated time: 2–4 hours for a border, plus yearly top-upsUpdated: 28 September 2026

Use this guide if your soil is sticky when wet, cracks in summer and puddles stay for days after rain. You will need a spade or fork, boards to stand on, and plenty of bulky organic matter such as garden compost or well-rotted manure.

Step by step

  1. Check how bad the drainage is

    Dig a hole about 30 centimetres deep, fill it with water and see how long it takes to drain. If water is still there the next day, drainage is poor. Note where water collects, especially near the house.

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