Organic Fertilisers  There are three main nutrients required by plants – nitrogen (Nfeeds the leaves and shoots), phosphorus (P- root growth) and potassium (K - size and quality of flowers and fruit). Although in an ideal world all nutrients needed by your crops would come from your own compost or animal manure in reality it is not always possible to obtain enough supplies of these, and the nutrient content is not always sufficient. This is where concentrated fertilisers come in, and also some crops, for example tomatoes benefit from extra feeding with potassium to encourage flower and fruit formation.

The advantage of using organic fertilisers rather than chemical ones is that they will not harm the soil or its many inhabitants. The following list are all suitable for organic plots 

blood, fish and bone meal – a general all purpose fertiliser N P K 

organic growmore – granular form of general fertiliser N P K

seaweed meal – slower release general fertiliser N P K

hoof and horn – good source of slow release nitrogen dried blood - fast acting nitrogen feed 

fish meal - contains nitrogen and phosphate 

bone meal – a popular phosphate fertiliser used for root growth when planting

rock potash – potassium fertiliser, is insoluble so remains in the soil for a long time

wood ash – source of potassium, must be collected from a spent bonfire before it rains or the nutrients will be washed away