suppress weeds . It is best not to use carpets as they often contain chemical substances that leach into the soil .
• Add a deep layer of organic mulch on top of the cardboard . This needs to be at least 20cm deep . It can be homemade compost , fully-rotted manure , grass mowings , leaves , straw or a mixture of many things .
• Tread it down by walking firmly across it .
• Leave for at least six months , just removing weeds from the surface . During this time the soil organisms will work hard to create rich and friable soil underneath .
• You ’ re ready to go ! Plant or sow directly into your new plot . When weeds appear , hoe or remove them by hand .
• Once you have harvested your crops , cut down the top growth and place it on the compost heap . Apply a generous layer of mulch and leave until you are ready for your next planting season .
What could be simpler than that ?
By Caroline Knight
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