Stone

Stone replacement of wood mulch benefits are:

1. Stone is permanent
2. Reduces the possibility of weed growth
3. Less maintenance for several years, which reduces annual cost and work
4. Does not support fungus or mushroom growth

Concerns to consider are:

1. Stone tends to dry the soil out due to holding heat long after the sun sets.  This is the opposite effect of wood mulch.
2. Stone over time will get dirty from leaves, lawn mowing, and airborne particulates.  Removal and disposal after years of use may be work you do not want
3. Stone will not add organic matter to your soil for your plants.