In Permaculture we mulch our gardens to retain moisture, provide organic matter for breaking down and to aid in the thriving of soil life. We mulch with straw, lucern or shredded biomas. We have even been experimenting with mulching with hyacinth (but are finding the heavy metal component too high).

In our Permaculture design we include mulch banks - where we plant a lot of vetiver grass, which is cut down periodically for mulch. This is one way that we design to get the garden needs on site.