Question: To make your own free mulch.
Options:
Soak and shred news papers. Mix in with potting fix and spread at the base of paints and shrubs to mulch.
Soak and shred news papers. Mix in with potting mix and spread at the base of plants and shrubs to mulch.
Answer: Soak and shred news papers. Mix in with potting mix and spread at the base of plants and shrubs to mulch.