A seed mix planted on the soil surface to put living roots in the ground, add nitrogen, shade the soil and provide chop-and-drop biomass for continual fertility.
Jeremy announces that in the next episode he'll sow cover crop into the 3x3 bed alongside installing the mulch layer so that the bed develops into a working ecosystem.
Discussed in: Ep 002 · Ep 006 · Ep 007 · Ep 014 · Ep 025 · Ep 030