This Organic Tomato Feed is fast-acting and contains all the essential nutrients your tomatoes need PLUS it contains seaweed extract and magnesium for season long heavy-cropping. It is also suitable for feeding courgettes, aubergines and flowering plants. NPK 5:2:5 and the dilution is 50ml into 4.5 litres i.e. 1 litre makes 90 litres of feed. Apply every 2 weeks during the growing season. 1 Litre bottle of Organic Tomato Feed makes 90 litres of feed.