Espoma PT20 20-Pound Plant-Tone Organic Plant Food Perfect all natural and organic plant food It is a premium blend that contains thousands of living microbes and is approved for organic gardening It is an excellent starter plant food also, and can be used on all flowers, vegetables, trees, and shrubs A complete plant food with all 15 essential nutrients The original, all natural, all purpose plant food since 1929 Complex blend of natural organics provide complete and balanced feeding of all 15 nutrients Environmentally safe No sludges, hazardous or toxic ingredients