If you're looking for a simple way to improve your allotment soil, increase water retention and support healthier crops, biochar is well worth adding to your gardening toolkit.

The record-breaking heatwave that swept across the UK and much of Europe in June 2026 left many of us searching for shade, watering our gardens more frequently, and wondering whether these extreme weather events are becoming the new normal.

If you've recently come across the word biochar, you're not alone. Once known mainly within scientific and agricultural circles, biochar is now gaining attention from gardeners, farmers, environmentalists, and policymakers alike.