Suppleplant Organic Fertilizers for a Better Environment Help your houseplants thrive with Suppleplant line of fertilizer for houseplants featuring naturally derived trace minerals that provide nutrients and aid in cell development. Each formula features a custom blend of trace minerals that work with your specific type of house plant to increase its absorption and make it last longer. Our Suppleplant formulas supplement the important nutrients found naturally in soil that house plants often can’t get enough of in their pot. Oftentimes, companies will formulate their houseplant fertilizer with chemicals that are easier to come by and cheaper to add. The issue is that these chemicals can harm the plants themselves and can contribute to an overall impact on the environment once that soil gets recycled back into the earth.