Disclaimer: Mulch is a flammable material and once it catches fire, that fire can be very persistent. If you live in an area prone to dry and hot weather, please proceed with mulching project in caution.
Mulching has many benefits but after using it and researching upon the subject I discovered it can also be a detriment if it's done improperly. For years I loved the beautiful, finished look it gave my shrub bed. Just notice the before and after photos when a fresh layer of it was added in the Spring.