Espoma Organic Palm-tone (4-1-5) Fertilzer • Just Fruits and ...Espoma Organic Palm-Tone 4-1-5 Natural & Organic Plant Food 4 lb Bag is a 4 lb organic, granular fertilizer specifically formulated for all palm trees, hibiscus, and tropical plants. It features a 4-1-5 NPK formula enriched with magnesium, calcium, and Bio-tone microbes to promote vigorous, deep green growth. It is safe, long-lasting, and does not contain fillers or sludges.