Each tub holds one full pound of Optimara 20-5-10 fertilizer for green plants and comes with an easy-to-use measuring spoon. This premium quality green plant food contains high grade trace elements and is urea-free. It can also be spray-misted on foliage. 1/2 tsp. per gallon will yield 1 gallon of fertilizer. Keep your green foliage plants growing strong year after year with Optimara Green Plant Food.