If you want to grow a small garden in your backyard, you require a top soil. Topsoil is the key ingredient for growing any plant ranging from flowers to herbs to full-fledged trees. Topsoil usually consists of a mixture of sand, manure, clay and silt. But, to get your gardening right, first you need to know the difference between different types of topsoil. They are:Unscreened Topsoil: This type of topsoil contains a mixture of small and large soil particles. It has a coarse consistency that makes it perfect for a sub soil base as compared to a fine surface soil. An amazing garden landscape can be perfectly created with this type of soil and a finer top soil can be added later.Screened Topsoil: This type of soil can be manufactured as per the specifications of customers. Consumers can choose the consistency of this type of topsoil. For example- particle sizes of five-eighth or three quarter inch. Screened topsoil travels through specifically sized mesh at the time of manufacturing. This type of soil provides a healthier growing space as water and other nutrients flow naturally through it. This is because consistent particle size is applied to the screened topsoil.The roots of the plants grow deeply and freely, once they are tilled into your garden’s natural screened topsoil. This type of soil also provides a greater opportunity for fruit trees to grow tall, strong and bear more fruits.Both screened and unscreened form of topsoil have a few drawbacks as well. For example unscreened topsoil is relatively inexpensive than screened topsoil but is not consistent enough to serve as the right growing medium for trees. The large and small soil particles in unscreened topsoil can inhibit root growth hinder the supplies of nutrients.On the other hand, screened topsoil is great for growth and allows nutrients to flow effortlessly, it can be a bit expensive. Many gardeners with a budget constraint would like to create only a thin layer of this soil which might not be enough to sustain the growth of plants.