mulched

/M AH1 L CH T/
verb
  1. 1

    To apply mulch.

    โ€œMulch your vegetable garden to retain moisture and keep weeds down.โ€

  2. 2

    To turn into mulch.

    โ€œI decided to mulch the grass clippings.โ€

Source: https://en.wiktionary.org/wiki/mulch, https://en.wiktionary.org/wiki/mulched