Soluble feed suitable for most bonsai species Strengthens stems and root systems Apply every two weeks from March to October Product Description This specially developed fertiliser contains relatively high levels of phosphorous and potash. This helps strengthen the stems and roots of Bonsai trees without promoting excessive top growth. It is suitable for most species including ericaceous and lime-hating plants. The feed should be applied every two weeks during the growing season from March to October. It is supplied in water soluble powder form and should be diluted and applied according to the pack instructions.