Rescue your houseplants with Houseplant Hero from ferti-lome! Use All Purpose Houseplant Food to feed all potted plants, both indoors and outdoors, including houseplants. May be used every time you water or once or twice per month. Concentrated formula. If applying once or twice per month, use 1/4 teaspoon per quart of water. If applying every time you water, use 1/8 teaspoon per quart of water. 10 - 10 - 10 (10 nitrogen - 10 phosphorus - 10 potassium). 8 oz. bottle.