In the first few days of our project at Penang Digital Library, we started by working on revamping the soil beddings as they had become unproductive and inefficient.
Upon closer inspection, we discovered that there was a thick layer of sticky mud in the beddings. This kind of material is often sold as “topsoil” in Malaysia, however a close friend in the construction industry has revealed that this mud is really just a kind of deep, clay soil which was most commonly used as a waste material taken from new building sites with not friendly to plants at all. We do not recommend “topsoil” for use in raised beds, beddings or pots. We recommend using 100% organic materials in a method known as “lasagna gardening”. It is not necessary to add soil in lasagna gardening, and if you are not sure of the quality of soil you have it is better to avoid using it altogether.