Mulching is best done after rain or after watering, when the soil is moist. If the mulching is done over dry soil then heavy watering will need to be done because the mulch will absorb a reasonable amount of water before it gets to the roots.
Steps to mulch:
- prepare the area by clearing away ground cover
- add fabric weed barrier (optional)
- thoroughly water the area
- add 2 inches of compost
- add 2 inches of mulch
- lightly water again