MicroTotal contains eight essential chelated micronutrients: Magnesium (Mg), Sulphur (S), Boron (B), Copper (Cu), Iron (Fe), Manganese (Mn), Molebdenum (Mo) and Zinc (Zn), in a formula that is extremely effective when applied as a foliar spray, or can be used as a soil drench during normal watering.
Bonsai soil is virtually inert, containing little or no nutrient value. Similarly, most fertilizers contain adequate amounts of the three major nutrients (NPK: nitrogen phosphorus and potassium) but they usually lack the essential micronutrients. Although only needed in minute quantities, micronutrients are indispensable to a tree's well-being. Many of the worrying problems we see in our trees from time to time can be attributed to a deficiency of one or more micronutrient.