Rose Focus is formulated to meet the nutritional requirements of potted rose plants. It contains pure mineral salts and complex organic plant acids. Roses will suffer as soil fertility declines. This is especially an issue in pots and containers. Humic acid, applied with the fertiliser, replicates the gradual addition of organic material in nature such as by leaf fall. All Focus nutrients are richly endowed with humic and fulvic acids to support and maintain soil fertility.