Organic potato fertiliser has been specifically formulated to provide your crop of potatoes with everything they need to produce a bountiful harvest in particular it has been developed to promote the sustained healthy growth making sure you get a good crop whatever soil you have use at the time of plating at the application rate specified on the pack circa 50g per square metre and then top dress every 4 6 weeks thereafter at the same rate working the fertiliser in to the top inch or so of