Mulch can protect your plants during the winter, conserve water, and in some cases suppress the growth of weeds. A garden that has mulch has a finished look to it.
Is There a Difference Between Organic and Non-Organic Mulch?
Organic mulch is made from something that was alive. With time, organic mulch may break down and provide nutrients to the soil. Non-organic mulch is made from materials that were never alive. They do not break down. They do not add nutrients to the soil.
Bark, straw, chopped leaves, hay, and grass clippings are examples of organic mulch. Bark nuggets will decompose slowly, whereas compost will decompose quicker and add a lot of nutrients to the soil. Inorganic mulches include things like landscape fabric, gravel, and plastic.
Is Organic or Non-Organic Mulch Better?
The answer to that question will vary based on your needs and your budget. Organic mulch will be less expensive to purchase. However, since it will decompose, you will need to purchase it repeatedly. You can minimize this expense if you make your own compost or use shredded leaves from your trees.
Organic mulch allows for the growth of beneficial fungi and bacteria. Organic mulch attracts insects and worms, and many of these improve the strength and health of your plants. The soil organisms created by organic mulch may control plant pests and keep out unwanted bacteria.
Organic mulch is a natural insulation. It can help keep the soil slightly warmer during the winter and make it slightly cooler during the summer.
Non-organic mulch will have a higher upfront cost. With gravel, it is a one time cost. Light-colored gravel might increase the heat and dryness around your plants. This can be a pro or con, depending on what type of plants you have and what those plants need to thrive.
Landscape fabric can be expensive, and there is a proper technique to install it. However, it does a phenomenal job at blocking weeds. Some people will lay down landscape fabric and then put organic mulch, such as bark nuggets, on top of the fabric. It looks nice. However, as the bark nuggets or other organic mulch break down, it will create a layer of soil that will allow weeds to grow, annulling the effects of the fabric. If you go the non-organic route, a good combination is using landscape fabric and then putting gravel or another non-organic material on top of the fabric.
Should Plastic Be Used as Mulch?
Some people use black plastic as mulch. It is not recommended for use on permanent trees or bushes. Plastic is airtight and can inhibit water from reaching the soil.
Plastic may be a good idea if you're planting annual fruit or vegetable crops, such as tomatoes or strawberries. Remember to remove the plastic at the end of the growing season and then reapply it the next year. An irrigation system should be installed under plastic or the plants should be watered by hand to make sure that they get a sufficient amount of moisture.