I'd never heard of them so I checked their website. I couldn't find any of their products claiming clearly to be fertilisers. There's just a passing reference to calcium being a plant nutrient, which may or may not be a good thing depending on the plant. They are all repellents. They're not certified organic but that doesn't mean they're not. The word has a legal meaning in the U.K. and if you're not certified you can't use the term. You'd have to check the ingredients and decide for yourself. What product were you looking at? They appear to have four. All are food safe according to their website. http://www.grazers.co.uk/products/gardeners/