Bonsai-Gold Plus. To further stimulate your Bonsais health we offer a completely natural hormone-vitamin bio-stimulant. Bonsai gold plus is a biologically produced liquid complex of micro-nutrients, vitamins, growth hormones (from seaweed extracts) and over 40 trace elements developed to increase soil microbial activity and balance your soil. When used in conjunction with Bonsai-Gold Premium Organic Fertilizer you will have a bonsai you can be proud of. Guaranteed Analysis Magnesium (mg) 0.50% Iron (Fe) 0.10% Zinc (Zn) 0.05% How to apply. Mix 6 tablespoons (3 ounces) in a gallon of water and apply to foliage with a pump sprayer or sprinkling can. Apply ever 2-3 months. For Flowering bonsai repeat every 2 weeks as needed during the flowering season.