What is biochar and why should we all be using it in our gardens?

It's the oldest thing you've never heard of, says Claire Spreadbury

Biochar retains water and nutrients in the soil and improves its structure
BIOCHAR is thousands of years old (first discovered by ancient Amazonian tribes). It'a loved by many of the UK's gardening experts, beneficial to the environment, and used by professional growers, tre[...]

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