Grow More Air Plant Fertilizer is easy to use. Just add 1/4 teaspoon to a gallon of water and soak your air plants for 20 to 40 minutes once per month. The package comes with instructions and a 12 month supply of fertilizer. This is a very small package of fertilizer that will easily last for 12 months. It only takes 1/4 teaspoon of fertilizer per gallon of water. This package will make 12 gallons or 12 months worth. You can save the water/fertilizer mix and make it last for two years or more. Plants not included in this listing