The soil pH composition has a big contribution on the stamina of your shrubs. It’s logical that many people, including myself, have expressed unease on how garden mulch selection affects the soil pH, since it does influences the ground as it decomposes.
While we talk a great deal of water and tree conservation, we sometimes forget that land itself is a precious resource. Unfortunately it is one that is disappearing under the stress of overpopulation and irresponsible farming practices. While we are not necessarily losing square footage, we are losing the rich, fertile topsoil, and in a world with ever-increasing mouths to feed, the loss of that soil is one to worry about.
Soil is naturally removed by the action of water or wind: such ‘background’ (or ‘geological’) soil erosion has been occurring for some 450 million years, since the first land plants formed the first soil. Even before this, natural processes moved loose rock, or regolith, off the Earth’s surface, just as has happened on the planet Mars.
This loose covering is called a mulch and it can be either of an organic or inorganic variety. Examples of mulches include compost, stone and grass clippings. Every gardener should understand the many benefits of mulching the soil in their garden.
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