Whether you are a die-hard-compost-me-when-I-die gardener, or a reluctant gardener, mulch is one of the most effective ways to help control weeds and keep moisture in your soil. Depending on which mulch you use, it can also add organic nutrients to your soil.
Mulch works by forming a barrier to the germination and growth of weeds, mainly by stopping sunlight from germinating those pesky weed seeds that are lurking in your soil. Additionally, weed seeds blown into your garden may germinate on top of or in the mulch, making them much easier to pull out.
Mulch can also help improve your soil. As it slowly breaks down, mulch releases nutrients and adds structure to the soil. Although needing to be topped up between one to five years (depending on which mulch you choose), if you are only going to do one thing in your garden this year, make it mulch!