Pokon Universal Plant Food Plants indoors are not in their natural environment, which is why you need to take extra care of them! Pokon Universal contains everything your houseplants need to stay healthy and beautiful. The nutrients stimulate strong growth and luscious flowers. This fertiliser also contains the important trace elements, essential elements with healthy and strong plants as the result. Instructions • Once a week, 10 ml of fertiliser per liter of water. • Give this fertiliser between the months of January and November. Fertiliser Solution of NPK fertilisers: 8-3-6.