RHS Empathy ericaceous seaweed fertiliser Feed & Biostimulant A unique blend of seaweed extracts, micro-nutrients and balanced fertilisers tuned for acid loving plants. Super seaweed is derived from sustainably harvested kelp which is manufactured using a unique cell burst process. This patented process ensures maximum retention of the growth stimulants found in kelp and contains a wide range of nutrients, vitamins and amino acids.Empathy is about making a choice to garden with minimal use of chemicals whilst maximising plant growth and health. Empathy products are biological, they will benefit your plants not just over a few months but through their lifetime and are designed to treat the soil as well as the plant. Empathy supports the RHS mission for 'Sharing the best in Gardening'.