Plants are often prone to harmful foreign invaders such as pests and bacteria that can cause disease and hurt your homes plants. The mulch that is added to plants helps to retain soil moisture, and as such organic material is steadily increasing. This organic material helps to strengthen the immune systems of the plants and allows for greater resilience to disease causing bacteria. Also, in many cases there are diseases that exist in the soil around your plants. If splashed onto the stem or leaves of the plant when watering, they can infect the plant and ultimately destroy it, (savvygardener.com). Having mulch will prevent any kind of splashing since its absorption of water quality is excellent. Having said all this, lets just lessen the risk entirely of our precious plants getting sick and apply mulch for a healthier and happier garden.
Picture Source: Fix.com Blog
Source: Soil disease splashed on plants.