Jobe's Fern & Palm Fertilizer Spikes are specially formulated for all indoor palm plants. Keeping your ferns & palms healthy & fertilized is easier than ever with Jobe's Fern & Palm plant food spikes. Jobe's spikes provide a continuous supply of important nutrients right at the roots, where plants need it most. Simply insert the pre-measured, specially formulated spikes into the soil around your plant. No mess, hazards or smells; only a safe beautiful plant. Jobe's Fern & Palm fertilizer spikes will help all your fern & palm plants thrive.