Most of the more commonly cultivated Australian plants occur naturally in nutrient-deficient soils, often particularly low in phosphorus. This has led to the misconception that fertilizers should not be applied to them. However, to obtain optimum growth, all plants require the basic elements nitrogen (N), phosphorus (P), and potassium (K) in balanced proportions. The relatively high level of phosphorus in standard all-purpose fertilisers can be dangerous to phosphorus-sensitive plants. This is particularly true of many members of the Protea family such as Banksia, Grevillea, Telopea, and Hakea.
Pesticides help protect plants from diseases, sap-sucking insects, scale, snails and slugs, ants, and termites. Native plants are not different from other plants in terms of pesticide application. However, phosphorus-containing fungicides should be avoided. For those customers who concern about welfare or do not want to use chemicals, we suggest various traps