Fertilizers come in a variety of formulations and ratios. Liquid fertilizers for house plants are often lower in concentrations, and will require more regular application. Time release fertilizers are available as a spike or pellets and only need applying once every few months. Whatever type of fertilizing routine you choose to use, be sure to carefully follow the manufacturer’s instructions.
philodendron, pothos |
This link will show you the best ways to fertilize, how to select the best ratios to look for in a product, and the best time of year to fertilize your house plants for the best results.
If you are still struggling with your houseplants after that then, contact your local University of Idaho Extension Office.