Jobes Houseplant Food Spikes Fertilizer spikes with a 13-4-5 N-P-K analysis feed trees at the roots, providing slow-release nourishment for up to 2 months. Designed for indoor use, these pre-measured spikes are easy to use with no wasteful runoff, mess, hazards, or smells. Suitable for all houseplants, these spikes deliver time-release fertilizer to ensure continuous nourishment at the roots.
