Will provide temperature stabilisation and weed suppression for young trees, and flex with the movement of growing roots. Non leaching and doesn’t absorb any water or nutrients.
Realistic expectations after some years of use: Our mulch has flexed to absorb the ground movement as the tree has grown, and in fact it looks like our mulch area has been extended to cover some of the surrounding concrete that was obviously not as flexible!
Note the new growth coming from the base of the tree, but no weeds growing through our mulch surface. Also note the falling leaves and other debris is simply rotting away on the mulch surface without needing any maintenance.