flake
n.— «I prefer mulches that break down readily in the soil and are easy to lay down. I used to buy salt hay, which grows in coastal marshes, because the seeds it contains don’t germinate in gardens. But it’s less available now, so I use straw or hay. These come off the bale in flakes, like the volumes in an encyclopedia.» —“Green Thumbs Value a Good Mulch” by Barbara Damrosch Washington Post May 6, 2004. (source: Double-Tongued Dictionary)