You can use this NPK liquid fertilizer for your plants every week for better results. Mix 2 gms of our best NPK fertilizer with 1 litre of water to make the liquid fertilizer. For pots that are lesser than 12 inches in size, you can use ½ a litre of the NPK liquid and for pots that are 12 inches or bigger you can use 1 litre of the NPK liquid fertilizer.