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Can I Use Cardboard As A Mulch? [Solved]

As a mulch - Spread cardboard over bare soil to protect it against winter rains. Even better if you put a layer of organic matter such as leafmould underneath. The worms and other soil life will enjoy processing both, giving you a lovely friable soil – ready for spring planting.15 Sept 2022

Cardboard Mulch For The Garden. Soil Scientist Breaks Down Cardboard Mulching. Is Cardboard Toxic?!

Cardboard mulch

Cardboard as Mulch - Straight to the Point

… shows how to

CARDBOARD in the Garden | PROS and CONS

Cardboard