Fertilizer for indoor plants - osmocot, duration 8-9 months /inreaction after each watering / application rule: interferes with soil transplanting, please use 3-4 grams of osmocot in 1 liter of soil / surface application - also possible to use on the top of the pot - soil - in this case, is better to use a maximum of 3 grams per 1 liter of soil.