Hebbe Liquid Plant Food for Orchids Flower 2 Bottles 2 bottlers /per order; 36ml (liquid) for each bottle (approximately 1.6oz / a bottle ) Use one or two bottles monthly for each pot, (depending on the size of the flower pot and the time of the year) Professional formulation , Can be used on all types of orchids Shelf life 2 years, Please see attached picture for detail use instruction