Contains beneficial amounts of boron, chlorine, cobalt, copper, iron, manganese, molybdenum and zinc Without micronutrients, bonsai and other plants will suffer vitamin deficiency A vitamin deficiency will lead sickly-looking foliage, such as browning/yellowing leaves, black edges Micrototal bonsai plant food contains 8 chelated trace elements to compliment 3-3-3 fertilizer Use less often and apply the tree food every 6-8 weeks during the growing season For a bonsai to grow, the soil must have its nutritional content replenished. The most serious elements; nitrogen, phosphorous and potassium (NPK). Known as the major plant nutrients. This is your basic Ho Yoku 3-3-3 Fertilizer. However, there are a further 'trace elements’ (Micro) that are required, but only in small quantities. These include boron (B), chlorine (Cl), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo) and zinc (Zn). Think of Ho Yoku MicroTotal as vitamin supplements. This product compliments Ho Yoku 3-3-3 fertilizer with 8 Chelated Micronutrients your tree needs. Less often but needed. A lack of minerals, like copper and iron and zinc, can cause health problems very similar to those people get from mineral deficiencies. Common signs of micronutrient deficiency in Bonsai trees include: Browning or yellowing leafs, "Scorched" black edges on leafs, Blotchy, mottled or marbled leaf textures along the capillaries or aborted flower buds. These are often mis-diagnosed as diseases or parasites when, in fact, it is just a simple nutrient deficiency which Ho Yoku micronutrient supplements can provide. Directions: Mix 2 Tablespoons per gallon of water. Use ½ does for indoor tropical trees. Caution: It’s Plant food, not human food. Keep away from children, and don’t drink it. What you get: Ready to use, 8 Fl oz Bottle with Disc Cap for easy pour. When to use: Apply every 6-8 weeks during the growing season.